Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

PLANT MATERIALS <- FOR LANDSCAPING ^V A LIST OF PLANTS FOR THE PACIFIC NORTHWEST

PNW500 'January 1999

A Pacific Northwest Extension Publication Oregon • Idaho • Washington Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

ONTENTS

GENERAL GROWING CONSIDERATIONS Plant hardiness zones , 2 Frost occurrence 2 Seasonal rainfall 2 Soil characteristics 2 Sun exposure 2 Heat zones 3 INDICATOR PLANT EXAMPLES 6 UNDERSTANDING PLANT NAMES 8 MANNER OF GROWTH 8 PLANTING AND CARE 9

PLANTS WITH SPECIAL NEEDS Rhododendrons 9 Heaths and heathers 10 FOR MORE INFORMATION 10

PLANT LISTS Small plants—to 18 inches high 11 Low plants—18 inches to 3 feet high 16 Medium plants—3-5 feet high 20 Large shrubs—5-8 feet high 25 Tall shrubs and shrubby trees—8-20 feet high 31 Trees 10-20 feet high 35 20-30 feet high 38 30-50 feet high 41 50-75 feet high 43 75-100 feet high 45 More than 100 feet high 47 Vines 49 GLOSSARY 52 INDEX 53 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

Update December 2001

Plant Materials for Landscaping PNW 500

States in the Pacific Northwest now regard the following plants as noxious weeds:

• Hedera helix, English ivy (Oregon) • Tamarix parviflora, saltcedar (Washington)

State weed specialists in Washington and Oregon also are concerned about possible invasive spread of the following plants:

• Buddleia davidii, butterfly bush • Prunus laurocerasus, English laurel • Sorbus aucuparia, European mountain ash • Vinca minor, periwinkle

Pacific Northwest Extension no longer recommends planting the above species.

EESC 77 • December 2001 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LANT MATERIALS FOR LANDSCAPING

A LIST OF PLANTS FOR THE PACIFIC NORTHWEST

This publication will help you select woody plant materi- f"rKIrn * i als for landscaping. It contains lists of nearly 400 of the more than 1,000 plants grown in the Pacific Northwest. GROWING The plants are divided into several height groups, repre- senting the average height attained within a reasonable time CONSIDERATIONS (3 to 10 years) under average growing conditions. This is The best advice in plant selection is to find the right plant the period of time of interest to most homeowners. Under for the right place. Plant hardiness zones are a starting point optimum conditions, or after many years, some plants will since they are based on winter temperatures. In determining exceed the height listed. For each plant, information also is where a plant will survive, however, you need to consider given on hardiness zone and sun or shade requirements. other factors as well, including frost occurrence, seasonal The cultivars listed were chosen for disease and insect rainfall distribution, humidity, soil characteristics, water resistance. Cultivars that frequently experience serious pest availability, and duration and intensity of sunlight. These problems are not included on the lists. factors bear little relationship to average winter tempera- tures. Every plant tolerates a range of conditions for each of HERE'S HOW IT WORKS these factors. The combined effects of all of them deter- mine true plant adaptability. When choosing a plant, the first question to ask Before selecting a plant, consider your site and determine yourself is "How large a plant do I need?" Thus, what, if any, environmental conditions exist that might the lists in this publication are organized by height cause problems for the plant. Analyze the site. What groups. Once you find the right height group, elements will the plant be exposed to (full sun, shade, wind, consider these factors: reflected heat)? What are the soil conditions (fertile or poor, • Where will the plant be located—in sun or high or low pH, depth of soil, drainage)? Select carefully to shade? ensure that the plant will live and thrive in your yard. • In which climate zone will it be planted? Some plants, such as rhododendrons and azaleas, prefer • What shape or manner of growth do I want? acid soils (low pH) and may require periodic soil amend- • What special features am I looking for? ments if your soil normally is alkaline or near neutral. Most Choose a plant that matches your site's growing other woody plants grow well across a wide range of soil conditions and also meets your other desires, such pH, from acid to alkaline. as for a certain color of flower or a particular manner of growth. Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

GENERAL GROWING CONSIDERATIONS

Plant hardiness zones pockets. Species that Plant hardiness zones depict minimum winter tempera- are marginally hardy tures. (See map on page 4.) A plant species that flourishes in a given zone should in one part of a given zone is likely to be adaptable in other not be planted in frost parts of the same zone or in a warmer zone. pockets. Some gardeners question a zone rating when a plant fails to survive its first winter. A single test, however, rarely is Seasonal rainfall reliable. A small, young plant may be tender, but may Total average rainfall has a become quite hardy as it grows older. Other conditions also significant effect on plant may affect the degree of hardiness. Furthermore, no single growth and development, and winter is quite average; some are more severe than others in the distribution of that rainfall suddenness of freezing or in severity of frost. is equally important. Some Just because a plant may survive in a given zone does not areas receive substantial necessarily mean it should be recommended for planting rainfall, but most of it does not occur during the growing there. Abelia grandiflora, for example, usually survives as season. Where summers are dry, plants may need supple- a low-growing, winter-retarded specimen in the colder mental water in order to survive. Using species that need areas of zone 6 or even in zone 5. It develops and flowers little water is one strategy to reduce the amount you need to normally, however, in zone 7. This species, therefore, is irrigate. properly recommended only for zones 7 and above. There are many ways to develop microclimates that allow Soil characteristics a tender plant to grow in an otherwise inhospitable zone. Soil is a major factor in determining which plants will For example, you can control soil fertility and water thrive in your garden. The ideal garden soil is loam. It is a availability to some extent. Other factors, such as tempera- light crumbly mixture of approximately equal parts of sand, ture, are largely beyond your control, but do have predict- silt, and clay particles, and consists of at least 4 percent able yearly averages. Frost dates, length of growing season, organic matter. Organic matter is important because it holds and minimum winter temperatures are among the least water, nutrients, and air, and is loose enough for roots to readily controlled of the major factors that govern the penetrate. Garden soils can be altered; however, it is adaptability of plants. important to complete a soil test first to determine what improvements your soil needs. Frost occurrence Average first and last frost days have been calculated for Sun exposure each plant hardiness zone. These dates give gardeners an The angle of the sun in relation to the earth varies from indication of when to expect the first frost of the fall as well summer to winter. The sun's angle not only affects day as the last frost of winter. length but also the shadows that are created in the garden. However, air temperature and movement also are impor- These shadows determine the amount of sun plants receive tant factors in frost occurrence and may create micro- and may have a significant effect on their growth. climates within your garden. Because warm air rises and Additionally, slopes that face south or southwest get more cold air sinks, cool air tends to accumulate in low spots and heat during the day than those that face north or northeast. in areas with minimal air movement, thereby creating frost Southern exposure slopes dry out more quickly and require supplemental water. Taking advantage of different expo- sures in the landscape may extend your growing season. Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

GENERAL GROWING CONSIDERATIONS

Heat zones plants may experience cell damage. Plant heat zones in the The tolerance of a plant to the expected cold temperatures Pacific Northwest range from zone 1 in the coastal areas, in an area long has been used as a measure of its ability to where there usually is fewer than 1 day per year above 0 survive in that area. Scientists have begun listing another, 86 F, to zone 8 along the Snake River, where there may be 0 equally important factor, that of how a plant performs in the 90 to 120 days above 86 F, and tender plants need some summer heat of an area. The American Horticulture form of care and protection (e.g., shade, windbreaks, or Society's Plant Heat Zone Map (page 5) indicates the irrigation) to grow properly. longest periods of heat that can be expected in all regions of The gardener's job is one of matching plants with the the United States. climate. You will find that many factors (some of which we Twelve different zones are defined by their average use in developing microclimates to fit a tender plant number of days above 860F (30oC), the level at which selection) can allow a plant to live outside its theoretical heat zone. Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

Average annual Minimum > Z Zone Temperature H <-50oF X > -50° to -45°F S -45° to -40oF -40° to -350F o N -35° to -30 F O 0 Z -30° to -25 F m -25° to -20oF > -20oto-15oF -15°to-10oF -10° to -50F -5° to 0oF 0° to 50F 5° to 10oF 10° to 150F 15° to 20oF 20° to 250F 25° to 30oF 30° to 350F 35° to 40°F >40oF

Source: Plant Hardiness Zone Maps, Misc. Publ. No. 1475, Agricultural Research Service, U.S. Department of Agriculture, 1990. Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

N O Z m > Ln Source: Plant Heat Zone Map, American Horticultural Society, 1997. Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

INDICATOR PLANT EXAMPLES

INDICATOR PLANT EXAMPLES Several representative plants are listed below under the coldest zone in which they normally succeed. Such plants may serve as useful indicators of the possibilities of each zone. In other words, if one of the plants on this list is growing successfully on a site, then other plants hardy in the same zone are likely to be hardy there as well.

Zone Botanical name Common .name

Zone 1 Betula glandulosa Dwarf birch Below -50oF Empetrum nigrum Crowberry Below -45.60C Populus tremuloides Quaking aspen Potentilla pennsylvanica Pennsylvania cinquefoil Rhododendron lapponicum Lapland rhododendron Salix reticulata Netleaf willow

Zone 2 Betula papyrifera Paper birch -50° to-40oF Comus canadensis Bunchberry dogwood -45.6° to -40oC Elaeagnus commutata Silverberry Larix laricina Eastern larch Potentilla fruticosa Bush cinquefoil Viburnum trilobum American cranberry bush

Zone 3 Berberis thunbergii Japanese barberry -40° to -30oF Elaeagnus angustifolia Russian olive -40° to -34.50C Juniperus communis Common juniper Lonicera tatarica Tatarian honeysuckle Malus baccata Siberian crabapple Thuja occidentalis American arborvitae

Zone 4 Acer saccharum Sugar maple -30° to -20oF Hydrangea paniculata Panicle hydrangea -34.5° to -28.90C Juniperus chinensis Chinese juniper Ligustrum amurense Amur River privet Parthenocissus quinquefolia Virginia creeper Spiraea x vanhouttei Vanhoutte spirea Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

INDICATOR PLANT EXAMPLES

Zone Botanical name Common name

Zone 5 Comusflorida Flowering dogwood -20° to -10oF Deutzia gracilis Slender deutzia -29.9° to -23.30C Ligustrum vulgare Common privet Parthenocissus tricuspidata Boston ivy Rosa multiflora Japanese rose Taxus cuspidata Japanese yew

Zone 6 Acer palmatum Japanese maple -10oto0oF Buxus sempervirens Common box -23.3° to -17.80C Euonymus fortunei Winter creeper Hedera helix English ivy Ilex opaca American holly Ligustrum ovalifolium Cahfomia privet

Zone 7 Acer macrophyllum Bigleaf maple 0° to 10oF Rhododendron Kurume hybrids Kurume azalea -17.8° to -12.30C Cedrus atlantica Atlas cedar Cotoneaster microphylla Small-leaf cotoneaster Ilex aquifolium English holly Taxus baccata English yew

Zone 8 Arbutus unedo Strawberry tree 10° to 20oF Choisya temata Mexican orange -12.3° to -6.60C Olearia haastii New Zealand daisy-bush Pittosporum tobira Japanese pittosporum Prunus laurocerasus Cherry laurel Viburnum tinus Laurestinus

Zone 9 Asparagus setaceus Asparagus fern 20° to 30oF Eucalyptus globulus Tasmanian blue gum -6.60to-l.rC Syzygium paniculatum Australian bush cherry Fuchsia hybrids Fuchsia Grevillea robusta Silk oak Schinus molle California pepper tree

Zone 10 Bougainvillea spectabilis Bougainvillea 30° to 40oF Cassia fistula Golden shower -l.l0to4.40C Eucalyptus citriodora Lemon eucalyptus Ficus elastica Rubber plant Ensete ventricosum Abyssinian banana Roystonea regia Royal palm Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

UNDERSTANDING PLANT NAMES

UNDERSTANDING PLANT NAMES rubrum 'October Glory' or Acer rubrum cv. October Glory). A cultivar is a cultivated variety that has unique The Latin binomial system or botanical name is the characteristics that differ from the species. To come true to preferred method of referring to plants. Swedish botanist type, many cultivars need to be propagated vegetatively Carl Linnaeus developed this system of plant classification (by cuttings, grafting, or division). in the 1700s. The first word of the name is the genus Using the common name to refer to a plant often is (e.g., Acer), and the second is the specific epithet confusing because many plants either do not have a com- (e.g., rubrum). The specific epithet often is mistakenly mon name, or they share a common name with others. To referred to as the species; in reality, species refers to a further complicate the situation, the same common name group of plants within the same genus. may be used in different regions to describe different Many ornamental plants also are referred to using a plants. Additionally, one plant may have several common cultivar name in addition to the Latin binomial (e.g., Acer names.

MANNER OF GROWTH

J£2^ ££2\ m -is Trailing Mat Mound or spreading Tuft or clump

Rounded Oval

V t V-shaped Pyramidal Columnar

8 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

PLANTING AND CARE

fertilizing. After PLANTING AND CARE the plant is Information about specific plant culture and pest control established, an recommendations is available at the county office of your annual applica- university Extension Service. Look for Extension Service tion of fertilizer in the phone book, usually listed under "County Govern- will keep it ment." vigorous and Successful care of ornamental plants depends on select- productive. ing the right plant for your site, planting it properly, and Learn what insects, then providing for its general needs. diseases, or maintenance Nearly all woody ornamental plants need good drainage problems to expect for your for their roots to survive. If yours is a poorly drained site, plants. There are many sources build raised beds for smaller plants, grow plants in contain- of information available, includ- ers, or install a drainage system. ing Extension publications, Landscape plants are available as bareroot (dormant and published books, magazines, deciduous), balled and burlapped (field-grown evergreens Extension specialists and agents, and specimens), or in containers. Master Gardeners, and people in Soak bareroot plants in water for several hours, then plant the nursery industry. them in a hole wide enough for all healthy roots to be spread without circhng. Plant at a slightly higher level than PLANTS WITH SPECIAL NEEDS in the nursery. Backfill with soil, and water well. Handle balled and burlapped plants by the ball, not the Rhododendrons trunk to prevent root damage. Remove the wrapper and twine, then place the ball in the planting hole, slightly Cultural requirements of rhododendrons vary somewhat above nursery-grown level. Backfill the hole, and water with the species or variety. In general, the following well. requirements apply to all of them, except as noted else- Remove container-grown plants from the container no where: matter what kind (paper, pulp, plastic, metal, etc.). • Soil should be a sandy loam topsoil high in organic Straighten the circling roots. If the root ball is tightly bound material. If such a soil is not available, improve the with circling roots, use a knife or spade to cut into the ball existing soil by incorporating peat moss until the soil so roots can be spread. The care you take at this stage will crumbles easily. Replace clay with a lighter topsoil. determine health of the plant in later years. Backfill with • Drainage should be good. If the site is low and wet, raise amended soil, and water well. the bed 10-12 inches or install drain tile. Water the newly placed plant regularly during its first • Soil pH should range between 5.0 and 6.0. Using peat growing season. If the summer is dry, water deeply each moss and occasional applications of sulfur, if necessary, week. will help lower the pH. Apply sulfur at the rate of Fertilizer need varies depending on the natural fertility of 2-3 pounds per 100 square feet. your soil. It may be useful to add a fertilizer high in phos- • Root systems of rhododendrons and azaleas are fibrous phorus at planting time to help the new plant get off to a and near the surface; consequently, it is necessary to good start. Several weeks after planting, you can scatter a water during the summer to prevent them from drying complete fertilizer, such as a 10-10-10 combination (either out. During May, June, and July, moisture is particularly organic or chemical) over the planted area. Use 1-2 pounds critical for the development of new stems, leaves, and per hundred square feet, and water immediately after buds. Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

FOR MORE INFORMATION

• Fertilizer may or may not be needed. In some species, it To order copies of the above publications, or additional is harmful. If there is evidence of a shortage of plant copies of this publication, send the publication's complete nutrients, add organic fertilizer, such as well-rotted title and series number, along with a check or money order barnyard manure or cottonseed meal. Or apply a com- for the amount listed, to: plete commercial fertilizer at the rate of 2 pounds or less Pubhcation Orders per 100 square feet. Extension & Station Communications Oregon State University Heaths and heathers 422 Kerr Administration The Calluna and Erica species and varieties of heath and Corvallis, OR 97331-2119 heather prefer full sun. Ericas grow well on any side of a Fax: 541-737-0817 small house if there is no additional competition for light. We offer discounts on orders of 100 or more copies of a Do not plant Cabanas on the north side. The soil should be single title. Please call 541-737-2513 for price quotes. well-drained, acid, and preferably a sandy loam high in You may order up to six no-charge publications without organic matter such as peat moss. If the existing topsoil is charge. If you request seven or more no-charge publica- heavy, remove it or add peat moss. If plants tend to be tions, include 25 cents for each publication beyond six. leggy, shear them back immediately after blooming or in You can view our Publications and Videos catalog and early spring. Fertilizer is not beneficial. many of our publications on the Web (eesc.orst.edu).

FOR MORE INFORMATION Other resources Books Plant propagation, culture, and pest control recommenda- The American Horticultural Society Encyclopedia of Garden tions are available from the Oregon State University Plants, by C. Brickell (Macmillan Publishing, 1992). Extension Service, Washington State University Coopera- Hortus HI (Macmillan Publishing, 1976). tive Extension, or University of Idaho Extension Service. Greer's Guidebook to Available Rhododendrons, by H. Greer Call or visit your county office. Look for "Extension (Offshoot Publishing, 1996). Service" in the phone book (usually listed under "County Landscape Plants: Their Identification, Culture and Use, by Government"). F. Birdwell (Delmar Publishing, 1994). Manual of Woody Landscape Plants, by M. Dirr (Stipes Publish- ing Company, 1990). New edition to be released in fall 1998. Extension publications The Random House Book of Shrubs, by R. Phillips and M. Rix Azalea and Rhododendron Care and Culture, FS 12, by (Random House, 1989). R. McNeilan (Reprinted 1994). No charge. The Sunset Western Garden Book, D. Clark, editor (Lane Publish- Deer-Resistant Ornamental Plants, EC 1440, by J. Horton and ing, 1986). W. Edge (1994). 750 Taylor's Guide to Perennials (Houghton Mifflin, 1987). Layering to Renew or Multiply Plants, PNW 165, by F. Larsen Taylor's Guide to Shrubs (Houghton Mifflin, 1987). (Reprinted 1982). 500 Taylor's Guide to Trees (Houghton Mifflin, 1987). Propagating Deciduous and Evergreen Shrubs, Trees, and Vines Trees for American Gardens, by G. Wyman (Macmillan Publish- with Stem Cuttings, PNW 152, by F. Larsen (Reprinted 1997). ing, 1990). 500 Trees and Shrubs for Pacific Northwest Gardens, 2nd ed., by Propagating Herbaceous Plants from Cuttings, PNW 151, by J. Grant and C. Grant (Timber Press, 1990). W Guse (Reprinted 1996). 500 Propagating Plants from Seed, PNW 170, by F. Larsen CD-ROMs (Reprinted 1991). $1.00 Horticopia: Trees, Shrubs and Groundcovers, by E. Oilman Selecting and Maintaining Water-efficient Landscape Plants, (Desops Ltd.). EC 1455, by M. Bauer (1995). 750 Michael Dirr's Photo-Library of Woody Landscape Plants, by Selecting, Planting, and Caring for a New Tree, EC 1438, by M. Dirr (Plant America). S. Fitzgerald and P. Ries (Reprinted 1997). $2.00 10 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

MALL PLANTS

TO 18 INCHES HIGH

St. Johnswort

Botanical name Common name Growth Zone Flowers Exposure Remarks

Ajuga reptans Carpet bugle Spreading, 5-9 Blue, Sun Herbaceous plant with persistent leaves; stoloniferous April-May Part sun effective year-round groundcover. Shade Varieties have white flowers, bronze or variegated leaves. Grows in full sun or shade, but does best in partial shade. Plant 18 inches apart.

Alyssum saxatile Goldentuft Spreading 4-9 Yellow, Sun Herbaceous plant for edging, walls, or alyssum April-May rocks, with a 2- to 3-foot spread. Cut back about one-half after blooming.

Andromeda polifolia Dwarf bog Spreading All Pink, Sun Small shrub; blue-gray-green foliage. Very rosemary April-May Part sun good in rock gardens.

Arctostaphylos Kinnikinnick Trailing 4-9 Pink, Sun Wide-spreading evergreen groundcover. uva-ursi (Bearberry) March-April Part sun Bright red berries. Plant 18-27 inches apart for quick cover. Full sun on dry banks or in partial shade. Will hang over walls. Sandy or gravelly soil is best.

Armeria maritima Sea pink Mound 4-9 Various Sun Green mounds, to 12 inches across and Part sun 4-6 inches high. Spring flowers on 8- to 10-inch stalks. Some varieties rebloom if spent flowers are removed.

Artemisia schmidtiana Silvermound Mound 4-9 See remarks Sun Forms a mound 8-10 inches high and 'Nana' a foot or more broad. Silvery gray foliage. Thrives in full sun in well-drained, dry soil. Flowers are less important than the foliage.

Bergenia cordifolia Heartleaf bergenia Clump 5-9 Rose pink, Sun Herbaceous plant with persistent leaves (Saxifrage Jan-April Part sun 4-6 inches across. Divide and reset if cordifolia) clumps become too thick. Flower stalks to 20 inches high.

Buxus sempervirens Edging Rounded, 6-9 Insignificant Sun Slow-growing broadleaf evergreen. Grows 'Suffruticosa' boxwood dense Part sun to 3 feet. Most frequently seen as clipped edging plant from 6-18 inches high.

11 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

SMALL PLANTS

Botanical name Common name Growth Flowers Exposure Remarks

Calluna vulgaris Goldleaf Scotch Dense mound, 6-9 Pink, Sun Golden leaves in summer, red in winter. 'Aurea' heather stems ascending July-Sept

Calluna vulgaris County Wicklow Spreading, 6-9 Shell pink, Sun Double-flowered form. Useful as a 'County Wicklow' Scotch heather stems ascending Aug-Sept groundcover.

Ceanothus gloriosus Point Reyes Spreading 7-9 Blue, Sun Broadleaf evergreen; grows to about ceanothus April 12 inches, high, with spread of 3-4 feet.

Convallaria majalis Lily of the valley Spreading 4-9 White, Sun Spreads by underground stems. Leaves April Part sun persist until autumn. Invasive. Shade

Comus canadensis Bunchberry Spreading All White Part sun Spreads by underground stems. Bright (bracts) Shade red berries in fall. Grows best in moist, acid soils. Deciduous.

Cotoneaster dammeri Bearberry Trailing 6-9 White, Sun Slow-growing groundcover; ultimate cotoneaster May-June Part sun spread of 6-8 feet. Red berries. Useful on small banks, among rocks, or on masonry walls and terraces. For quick cover, plant 18 inches apart. Varieties include 'Lowfast' and 'Coral Beauty.'

Daboecia cantabrica White bell Spreading, 7-9 White, Sun Broadleaf evergreen heath-like plant. 'Alba' Irishheath stems ascending May-Nov Part sun Masses well if planted 2 feet apart.

Daboecia cantabrica Purple bell Spreading, 7-9 Purple, Sun Broadleaf evergreen heath-like plant. 'Atropurpurea' Irishheath stems ascending June-Nov Part sun Masses well if planted 2 feet apart.

Daphne cneorum Garland daphne Spreading 5-9 Rosy pink, Sun Pink flowers are this plant's chief April-May Part sun attraction. Will do well without fertilizer on a well-drained slope or among rocks.

Erica camea King George Spreading 6-9 Deep rose Sun Early bloom and compact spreading 'King George' spring heath pink, ' growth habit make this a useful plant. Feb-April Tolerates nonacid soil.

Erica camea Spring heath Spreading, 6-9 White, pink, Sun Similar to King George in form. 'Springwood' stems ascending Feb-April

Erica cinerea Twisted heath Spreading, 7-9 Magenta, Sun Another bright summer bloomer. stems ascending June-Aug Part: sun

12 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

SMALL PLANTS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Erica darleyensis Darley heath Spreading, 5-9 White, pink. Sun Will grow to 2 feet high with 3-foot spread. 'Mediterranean White' stems ascending Nov-April Part sun and 'Mediterranean Pink'

Erica tetralix Bog heath Spreading, 8-9 Pink, Sun Gray foliage and summer bloom make 'George Frazier' stems ascending June-July Part sun this heath desirable.

Erica vagans Cornish heath Spreading, 7-9 Pinkish purple. Sun Grows to 2 feet high with an ultimate spread 'Mrs. D.F. Maxwell' stems ascending July-Oct Part sun of 4-5 feet.

Euonymus fortunei Purpleleaf Spreading 4-9 Insignificant Sun Broadleaf evergreen groundcover; will wintercreeper Part sun spread to about 18 inches. May be planted 4 feet apart. Varieties 'Kewensis' and 'Gracilis.'

Festuca ovina Blue fescue Tuft 4—9 Insignificant Sun Bluish-gray foliage. Clip off flower glauca Part sun stalks. Use as groundcover or edging plant.

Gaultheria Wintergreen Spreading, 3-9 Pinkish white. Part sun Dark green glossy leaves turn red in cold procumbens groundcover April-June Shade weather. White blooms are followed by red berries. Berries and leaves have wintergreen flavor.

Genista pilosa Vancouver Gold Mound 5-9 Golden yellow Sun Mounds to 12 inches high and 3 feet wide. 'Vancouver Gold' broom May-June Branches are covered with golden yellow pealike blooms in late spring.

Hedera canariensis Algerian ivy Spreading, 8-9 Insignificant Sun A vigorous groundcover once estab- groundcover Part sun lished. Plant 4 feet apart. For large or climbing vine Shade areas only.

Hedera helix Enghsh ivy Spreading, 6-9 Insignificant Sun A vigorous groundcover once estab- groundcover Part sun lished. Plant 4 feet apart. For large or climbing vine Shade areas only.

Helianthemum Sunrose Spreading 5-9 Yellow, Sun Grows to 12 inches with spread of nummularium May-June 2 feet or more. Varieties range from yellow to white to red. Grows well in nonacid soil with relatively low moisture content.

Hypericum calycinum Aaronsbeard Spreading, 6-9 Bright yellow, Sun Vigorous and invasive groundcover. (St. Johnswort) stoloniferous July-Sep Part sun Do not plant adjacent to perennials or Shade small shrubs.

13 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

SMALL PLANTS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Hypericum St. Johnswort Spreading, 7-9 Gold yellow, Sun Vigorous and invasive groundcover. moserianum stems ascending July-Sept Part sun Do not plant next to perennials or Shade small shrubs.

Iberis sempervirens Evergreen Spreading 5-9 White, Sun Several good horticultural varieties are candytuft March-May Part sun available.

Juniperus horizontalis Bar Harbor Spreading 4-9 Sun 'Bar Harbor,' 'Wiltonii,' 'Blue Chip' 'Bar Harbor' creeping juniper Part sun varieties are useful as groundcovers in full sun.

Juniperus squamata Blue Carpet Spreading 4-9 Sun Prostrate, 12-inch high conifer. Ground- 'Blue Carpet' creeping juniper Part sun cover for dry locations. Plant 4—5 feet apart.

Lithodora diffusa Grace Ward Spreading 6-9 Gentian blue, Sun Sprawling plant with narrow, dark green 'Grace Ward' lithodora July-Sept leaves. Flowers all summer.

Pachysandra Japanese Spreading, 5-9 White, Sun Dense mat about 12 inches deep; vigorous terminalis pachysandra stoloniferous April-May Part sun and invasive. Tends to yellow in full sun.

Phlox subulata Moss phlox Spreading 4-9 Purple, Sun A 6-inch mat useful in rock gardens April-May Part sun and walls. Needs good drainage. Does well in most soils.

Rhododendron Gumpo azalea Rounded, 6-9 Various, Sun There are a number of Gumpo azalea 'Gumpo' spreading see remarks Part sun varieties, all low-growing, very floriferous, in colors ranging from white to red and variegated.

Rhododendron Cloudland Rounded, 8-9 Purple-blue, Sun Broadleaf evergreen; grows to about impeditum rhododendron stems ascending April Part sun 20 inches (broader than tall). Foliage is slightly gray. Flower color is better in partial shade.

Rhododendron Ramapo Rounded 4—9 Lavender, Sun An early bloomer, makes a good border 'Ramapo' rhododendron April or foreground planting. Extremely hardy.

Rosa Groundcover 4-9 White, pink, Sun Low-growing, densely branched shrub 'Rower Carpet' Spreading rose, that remains low to the ground. Good May-Oct resistance to rose diseases. Shiny foliage, long-blooming habit.

Rubus pentalobus Emerald carpet Spreading 7-9 White, Sun Creeping stems make a carpet of densely (calycinoides) berry June Part sun packed, ruffled green leaves. Berries are edible.

14 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

SMALL PLANTS

Botanical name Common name Growth Flowers Exposure Remarks

Santolina Lavender cotton Spreading, 7-9 Yellow, Sun Broadleaf evergreen; grows to 18 inches. chamaecyparissus stems erect July-Aug Thrives in a sunny, dry location. Silvery gray foliage.

Sarcococca Sweet box Spreading, 7-9 Whitish, Part sun Spreads by underground stems. Broadleaf hookeriana sarcococca stoloniferous Oct-March Shade evergreen groundcover for shady locations humilis under trees or in dark comers. Does well in most soils. Grows to about 18 inches high.

Teucrium chamaedrys Chamaedrys Spreading, 7-9 Purple, Sun An ancient ornamental used during the germander stems ascending July-Aug Middle Ages. Does best in dry, sunny locations. Clip in early spring to maintain compact form.

Thymus Wooly thyme Spreading mat 5-9 Insignificant Sun Groundcover, best in full sun. Leaves are pseudolanuginosus covered with tiny gray hairs, which give the plant a wooly appearance.

Vaccinium vitis-idaea Cowberry Spreading, 5-9 Pinkish, Sun Groundcover for sunny or lightly (lingonberry) stoloniferous May-June Part sun shaded location. Cranberry-like fruit is edible. Does well in light, peaty, moist soil.

Vinca minor Common Trailing, 5-9 Lilac blue. Sun Vigorous, invasive groundcover. Do not periwinkle stoloniferous Feb-May Part sun plant near small shrubs and perennials. Shade Adaptable to various conditions of soil and exposure. Varieties are available with white, blue, or wine-colored flowers.

Waldsteinia Barren strawberry Spreading 6-9 Yellow, Sun Evergreen groundcover with strawberry- fragarioides April-May Part sun like leaves that turn bronze in fall.

15 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

OW PLANTS

18 INCHES TO 3 FEET HIGH

Botanical name Common name Growth Flowers Exposure Remarks

Abelia grandiflora Prostrate glossy Spreading 6-9 White, Sun Semi-evergreen, low-growing shrub. New 'Prostrata' abelia June-Sept Part sun growth is tinted red.

Berberis thunbergii Crimson Pygmy Compact, 4-9 Insignificant Sun A tightly mounding plant to 18 inches tall 'Crimson Pygmy' dwarf Japanese mounding Part sun and 30 inches wide. Deep crimson-colored barberry fohage. Deciduous.

Calluna vulgaris Mrs. H.E. Beale Spreading, 6-9 Silver-pink, Sun Broadleaf evergreen heather. Grows to 'Mrs. H.E. Beale' Scotch heather stems ascending July-Oct about 2 feet.

Calluna vulgaris Searle Scotch Spreading, 6-9 Rose-pink, Sun Tolerates a little more shade than other 'Searlei' heather stems ascending Sept-Oct Part sun varieties.

Ceratostigma Chinese plumbago Upright 6-9 Blue, Sun Deciduous. Blooms summer through fall willmottianum June-Sept with a profusion of bright blue flowers.

Cotoneaster Rock cotoneaster Horizontally 6-9 Pale pink, Sun Deciduous, spreading shrub useful as horizontalis spreading May-June Part sun a bank cover. Bright red berries. Can be espaliered.

Cotoneaster Rockspray Horizontally 7-9 White, Sun Broadleaf evergreen with dark green microphyllus cotoneaster spreading May-June Part sun leaves. Bright red berries in fall.

Cotoneaster Little-leaf Spreading, 6-9 White, Sun A compact mounding shrub with small microphyllus cotoneaster becoming April-May Part sun leaves. Clusters of small white flowers, thymifolius mounded followed by clusters of small red berries. Grows 2 feet tall and about 4 feet wide.

Cryptomeria japonica Dwarf Japanese Dense, rounded 6-9 Sun Conifer; grows to 3 feet high. Green in 'Dwarf' cryptomeria Part sun summer; reddish in winter.

Deutzia gracilis Slender deutzia Rounded, stems 5-9 White, Sun Deciduous shrub; grows to about 4 feet high. ascending April-May Part sun Most useful at 2-3 feet. Prune out old wood after blooming.

16 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LOW PLANTS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Fuchsia magellanica Hardy fuchsia Vase-shaped 7-9 White, pink. Sun Arching branches with drooping blossoms. purple, Part sun Grows to 3 feet. May die back in cold May-Oct Shade winter areas. Deciduous.

Genista lydia Lydia broom Spreading 7-9 Yellow, Sun Evergreen in warmer areas, deciduous in June-July areas colder than zone 7.

Ilex crenata Convexleaf Rounded, dense 6-9 Insignificant Sun Tolerates low temperatures. Does 'Convexa' Japanese holly not respond well to hot, dry conditions of zone 6. Excellent foliage plant.

Juniperus chinensis Old Gold Spreading 4-9 Sun Yellow-gold foliage sets this juniper off. 'Old Gold' juniper Part sun Tolerates cold and dry areas.

Juniperus sabina Tamarix Savin Spreading 5-9 Sun One of the most useful forms. Does not 'Tamariscifolia' juniper Part sun grow more than 2 feet high, except with age.

Juniperus squamata Blue Star Mound, 4-9 Sun Mounding growth to about 2 feet high and 'Blue Star' juniper spreading spreading to 4 feet wide. Dense foliage is steel-blue color.

Lavandula English lavender Rounded, 6-9 Lavender, Sun Tolerates alkaline soil. Useful in angustifolia stems ascending July-Sept moderately dry and infertile soils. Flowers are fragrant.

Lonicera pileata Privet honeysuckle Spreading, 6-9 White, Sun Semi-evergreen groundcover from • horizontal April-June Part sun 2-3 feet tall with 6-foot spread. Older plants Shade grow to 5 feet tall.

Mahonia nervosa Cascades mahonia Spreading, 7-9 Yellow, Sun A 2- to 3-foot broadleaf evergreen native stems ascending April-June Part sun best adapted for partial shade. Excellent Shade groundcover. Similar to Oregon grape in appearance but much smaller in size.

Nandina domestica Dwarf nandina Rounded, 7-9 White, Sun Similar to heavenly bamboo but smaller 'Dwarf' stems ascending June-July Part sun in all parts. Resembles a diminutive bamboo. Thrives in moist soil. Red berries.

Pemettya mucronata Chilean pemettya Mound, 7-9 White, • Sun Evergreen shrub. Tiny white flowers spreading April-May Part sun are followed by large red, pink, or white berries.

Picea abies Nest Norway Spreading 4-9 Sun Slow-growing conifer. Grows to 18 inches 'Nidiformis' spruce Part sun high and spreads to 3 feet.

17 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LOW PLANTS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Polystichum munitum Western Rounded, erect 5-8 Part sun Evergreen fern with erect, leathery, lance- sword fern shaped, dark green fronds. Prefers moist soil.

Potentilla fruticosa Shrubby Rounded, 4-9 Various, Sun A 3- to 4-foot deciduous shrub. Leaves cinquefoil stems ascending May-Aug Part sun sometimes persist most of the winter. Many varieties, with bright yellow to pink and white flowers. Tolerates wet, dry, acid, or alkaline soil.

Pyracantha coccinea Lowboy scarlet Spreading 5-9 White, Sun Low-growing shrub with bright orange 'Lowboy' firethom April-May Part sun berries. Grows 2-3 feet tall and spreads 6-8 feet wide. Evergreen in most areas; may be deciduous in colder areas.

Raphiolepis indica Indian Mound 7-9 Pink (mostly), Sun Evergreen shrub with clusters of flowers hawthome May-June Part sun in spring. Many varieties with pink or white flowers.

Rhododendron Cream Crest Rounded 6-9 Creamy Sun A small-leafed, compact plant. Blooms 'Cream Crest' rhododendron yellow, in early midseason. April-May

Rhododendron Dora Amateis Rounded 6-9 White, Sun Foliage and flowers are fragrant. 'DoraAmateis' rhododendron May

Rhododendron Hinodigiri a/a lea Spreading 6-9 Red, Sun Broadleaf evergreen. Has fine texture 'Hinodigiri' April-May and compact growth habit.

Rhododendron Macrantha azalea Spreading 7-9 Deep rose, Sun Broadleaf evergreen. Grows to 24-30 'Macrantha' June Part sun inches. Flowers are double.

Rhododendron Mardi Gras Rounded, 7-9 Light pink, Sun Very compact, good foliage. Tolerates 'Mardi Gras' rhododendron spreading May Part sun heat and sun.

Rhododendron Moonstone Rounded 7-9 Light yellow. Part sun Nicely rounded and glossy, medium-sized 'Moonstone' rhododendron May Shade leaves.

Rhododendron Snow azalea Spreading, 5-9 White, Sun Popular for white flowers and dull mucronatum stems ascending May Part sun green leaves. May grow to 4 feet high, but useful height is 18-30 inches with a spread of 3-5 feet.

Rhododendron Scarlet Wonder Rounded 6-9 Red, Part sun Distinctive foliage, compact growth. 'Scarlet Wonder' rhododendron May

18 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LOW PLANTS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Rhododendron Shamrock Rounded 7-9 Greenish Part sun A small-leafed, compact plant. Blooms 'Shamrock' rhododendron yellow, near St. Patrick's Day with unique blossom March-April color.

Rhosmarinus officinalis Rosemary Rounded, 8-9 Lavender- Sun Evergreen herb, useful both as an stems ascending blue, Part sun ornamental and in cooking. Tolerates Spring low-fertility soils.

Skimmia japonica Dwarf skimmia Rounded 7-9 White, Sun A compact broadleaf evergreen shrub 'Dwarf' April-May Part sun for a shady place. Bright red berries.

Spiraea bumalda Goldflame Mound, 4-9 Crimson, Sun Deciduous shrub. New spring growth is 'Goldflame' spirea spreading July-Sept Part sun bronze-gold, turning yellow-green in summer, then coppery-orange in fall.

Symphoricarpos albus Common Rounded 4-9 Pinkish, Sun This 3-foot deciduous shrub is reliable; snowberry June-Sept Part sun it tolerates most conditions of soil and Shade exposure. White berries.

Taxus baccata English yew Spreading 6-9 Sun Dark green foliage, horizontal growth; 'Repandens' Part sun seldom grows more than 2 feet tall.

Viburnum davidii David viburnum Spreading, 7-9 Dull white, Sun Broadleaf evergreen; grows to 2-3 feet dense June Part sun tall, spreads to 5-6 feet. Leaves dark Shade green, to 6 inches long. Grows in most soils. Plant a male to pollinate females, which will develop blue berries.

Viburnum opulus Dwarf European Rounded 4-9 Seldom Sun Slow-growing, deciduous viburnum. Sel- 'Nanum' cranberry bush flowers Part sun dom exceeds 2 feet tall. Compact growth habit. Ornamental foliage.

Yucca filamentosa Adams needle Rounded, 4—9 Yellow-white, Sun Hardy desert plant. Broadleaf evergreen; yucca ascending July-Aug usually less than 3 feet tall. Flower spikes are 3-5 feet tall. Best in well- drained sunny location.

19 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

EDIUM PLANTS

3-5 FEET HIGH

rose

Botanical name Common name Growth Zone Flowers Exposure Remarks

Acer palmatum Threadleaf Rounded 6-9 Insignificant Sun Finely dissected light green fohage turns 'Dissectum' Japanese maple Part sun bright yellow in fall. Slow growing; can grow to approximately 10 feet. Useful height is 4—5 feet.

Berberis thunbergii Japanese barberry Rounded, 4-9 Pale yellow. Sun Spiny, deciduous shrub with brilliant dense April Part sun scarlet and yellow fall color. Red berries.

Berberis thunbergii Redleaf Japanese Rounded, 4-9 Yellow- Sun Spiny, deciduous shrub with brilliant 'Atropurpurea' barberry dense reddish, Part sun scarlet and yellow fall color. Red berries. April-May Leaves dark reddish-purple in spring and summer.

Berberis Warty barberry Rounded, 6-9 Gold-yellow, Sun Sturdy, spiny, broadleaf evergreen with verruculosa dense May Part sun fine texture and dark green leaves.

Chamaecyparis Dwarf gracilis Rounded 4-9 Sun Grows to 4-6 feet high with 3- to 4-foot obtusa 'Nana' Hinoki Part sun spread. Evergreen with dark green, dense fohage. Appears sculpted.

Chamaecyparis Dwarf Sawara Rounded, 5-9 Sun This conifer forms a dense, rounded pisifera 'Nana' false cypress descending Part sun mass with a weeping effect.

Choisya temata Mexican orange Rounded 7-9 White, Sun Useful at 4-5 feet high. Will grow to April-May Part sun 6-8 feet high. Does well in most soils. May suffer if exposed to a prevailing wind.

Cotoneaster Cranberry Spreading 4—9 Pinkish white. Sun Dense spreading form with herringbone apiculatus cotoneaster April-May Part sun pattern branches and shiny green leaves. Cranberry-sized berries persist through winter. Deciduous.

Cytisus praecox Warminister Rounded, dense, 6-9 Cream-yellow, Sun Looks green at all times because of broom stems ascending April color of branches. Useful in a sunny, dry location or in poor soil.

20 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

MEDIUM PLANTS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Daphne mezereum February daphne Erect, oval form 5-9 Rose-purple, Sun Early flowering habit of this deciduous Feb-April Part sun shrub makes it desirable. Flowers are fra- grant.

Daphne odora Winter daphne Dense mound 7-9 White and Sun Broadleaf evergreen; grows to about 3 feet rose-purple, high. Dark green in partial shade; yellowish March-April in full sun. Fragrant flowers. The variety 'Aureo-marginata' has leaves with a yellow- gold band on the edge.

Erica terminalis Corsican heath Rounded, 7-9 Rosy purple, Sun May exceed 5 feet high. Can be kept a little stems ascending July-Sept Part sun lower by early spring pruning. Seed capsules give a rich brown color in fall. Grows in most soils.

Euryops pectinatus Green leafed Upright 8-9 Yellow, Sun Evergreen shrub with daisy-like flowers, 'Viridis' euryops June-Oct Part sun which are displayed most of the growing season.

Euonymus fortunei Gold Prince Upright 4—9 Insignificant Sun Vigorous grower to 4 feet tall and as wide. 'Golden Prince' euonymus Part sun New foliage is tipped with gold; older Shade foliage gradually turns green.

Gaultheria shallon Salal Spreading, 7-9 White-pink, Sun One of the more useful native plants. An stems ascending May-June Part sun excellent bank cover. Tall in shade; Shade 2xfi-4 feet in sun. Trim after blooming to keep low.

Hydrangea Bigleaf hydrangea Rounded to erect, 7-9 White, blue. Sun A broadly rounded deciduous shrub macrophylla oval pink. Part sun with large, showy terminal clusters of June-July Shade flowers. Bloom color may vary according to soil acidity.

Ilex comuta Rotunda Chinese Rounded 7-9 Insignificant Sun Evergreen that is useful in a container 'Rotunda' holly Part sun planting or small garden. Female plants produce small crops of fruits if fertilized.

Ilex crenata Convexleaf Rounded, 6-9 Insignificant Sun Tolerates low temperatures. Does not 'Convexa' Japanese holly dense respond well to hot, dry conditions of zone 6. Excellent foliage plant.

Juniperus chinensis Armstrong juniper Upright, 4-9 Sun Light green lacy-textured foliage on 'Armstrong' spreading Part sun slightly arching branches.

Leucothoe Drooping Rounded, 5-9 White, Sun Broadleaf evergreen. Winter color is fontanesiana leucothoe arching May-June Part sun bronze and red. branches

21 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

MEDIUM PLANTS

Botanical name Common name Growth Flowers Exposure Remarks

Ligustrum vulgare Lodense privet Upright 4-9 Insignificant Sun Ideal hedge plant. Best in full sun. 'Lodense' Part sun Deciduous.

Mahonia aquifolium Oregon grape Upright 5-9 Yellow, Sun Terminal clusters of yellow flowers in holly April-May Part sun spring are followed by clusters of blue Shade berries in fall. Evergreen foliage changes from bronzy-red when new to green in summer and purplish-red in winter.

Picea glauca 'Conica' Dwarf Alberta Pyramidal 4—9 Sun Grows slowly to 6-10 feet high. Dense, spruce Part sun conical, compact evergreen.

Pinus mugo mugo Mugo Swiss Rounded 4-9 Sun Hardy conifer with compact growth habit mountain pine Part sun and climatic adaptability. Seed-propagated types may grow to 15 feet tall. Plants clonally propagated from known dwarf parents are superior.

Pinus strobus Dwarf white Broad 4-9 Sun A dwarf, compact evergreen with blue- 'Nana' pine pyramid green, soft-textured needles.

Prunus laurocerasus Zabel cherry Rounded 6-9 White, Sun Spreads 6 to 8 feet or more by the 'Zabeliana' laurel April-May Part sun time it reaches 4 feet high. May be used as foundation plant or "filler" to take up space. May be clipped into a hedge. Flowers are fragrant.

Punica granatum Dwarf Rounded, 7-9 Orange-red, Sun Deciduous shrub growing to about 'Nana' pomegranate stems ascending June-Sept Part sun 3 feet high. Rich soil required. Protect from cold winds; may be damaged by frost.

Raphiolepis Roundleaf Rounded 7-9 White, Sun Broadleaf evergreen. Grows slowly umbellata raphiolepis May-June Part sun to 12 feet high; useful at 4-5 feet.

Rhododendron Mollis azalea Oval 5-9 Various, Sun Loosely classified group of azaleas of (Azalea mollis Exbury azalea April-May Part sun good garden quality, including many and Exbury and Knaphill azalea unnamed and named seedlings. Knaphill hybrids,)

Rhododendron Blaney's Blue Rounded 6-9 Lavender-blue, Sun Broadleaf evergreen. Grows to 6 feet high. 'Blaney's Blue' rhododendron April Part sun Useful because of bluish flowers.

Rhododendron Blue Peter Rounded 7-9 Lavender-blue, Sun Grows to 5 feet high. Foliage is rich dark 'Blue Peter' rhododendron May Part sun green.

Rhododendron Bowbells Rounded, 8-9 Shell pink. Sun Broadleaf evergreen. Grows to 3 or 'Bowbells' rhododendron compact May 4 feet high. FoUage is similar to R. william- sianum in form and color.

22 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

MEDIUM PLANTS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Rhododendron Daphnoides Rounded, 6-9 Blue, Sun Small trusses of blue flowers. Leaves 'Daphnoides' rhododendron upright May-June Part sun are uniquely shaped like daphne leaves. Plant is very compact in full sun.

Rhododendron Elizabeth Rounded 7-9 Red, Part sun A prolific bloomer. 'Elizabeth' rhododendron May

Rhododendron Jean Marie de Rounded, 7-9 Crimson, Sun Broadleaf evergreen. Keeps foliage 'Jean Marie de Montague compact May Part sun color in full sun. Montague' rhododendron

Rhododendron Mars Rounded, 6-9 Blood red, Sun A hardy, broadleaf evergreen. Good form. 'Mars' rhododendron compact May-June

Rhododendron Mist Maiden Spreading ' 4-9 Rose-pink, Part sun Broadleaf evergreen; grows to about 'Mist Maiden' rhododendron April-May 3-5 feet high. Graceful form, excellent fohage, whitish stems. Partial shade is best, but can take full sun in coastal areas.

Rhododendron Odee Wright Rounded, 7-9 Yellow, Part sun Shiny foliage, compact plant. 'Odee Wright' rhododendron compact May

Rhododendron PJM Rounded 4-9 Pink-purple, Sun Hardy to -30oF. Small-leafed early bloomer. 'PJM' rhododendron April Part sun Tolerates full sun. Fohage is fragrant.

Rhododendron Yaku Princess Rounded, 6-9 White, Sun Interesting foliage. Bloom begins with a 'Yaku Princess' rhododendron compact May Part sun pink bud opening to a white full blossom.

Rosa rugosa Rugosa rose Upright 3-9 Various, Sun A vigorous, hardy rose. Prickly stems. Season-long Part sun Single to double flowers depending on variety. Large hips (red to orange).

Sarcococca Fragrant Vase 7-9 White, Sun Evergreen; upright habit with arching ruscifolia sarcococca fragrant. Part sun branches covered with shiny foliage. April-May Shade Flowers are followed by dark red berries.

Skimmia japonica Japanese skimmia Rounded 7-9 Yellow-white, Sun Evergreen with bright red berries in April-May Part sun winter. Foliage tends to yellow in sun. Male plant needed for fruit to develop.

Spiraea thunbergii Thunberg spirea Rounded 5-9 White, Sun Deciduous shrub with light green leaves. Feb-May Part sun Good fall color.

Symphoricarpos Indian currant Oval to rounded 4—9 See remarks, Sun Deciduous. Small flowers are yellow-white, orbiculatus coralberry Aug Part sun flushed with rose. Purplish-red fruit is ornamental during winter.

23 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

MEDIUM PLANTS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Taxus cuspidata Dwarf Japanese Upright 4-9 Sun Evergreen; grows slowly to 4 feet tall 'Nana' yew Part sun and 8 feet wide.

Thuja orientalis Berckmanns Oval 6-9 Sun Slow-growing, golden-foliaged conifer. 'Berckmanns' Oriental Part sun arborvitae

Vaccinium ovatum Box blueberry Rounded, 7-9 White-pink, Sun Broadleaf evergreen native. Bronzy stems ascending April-May Part sun hue in spring and darker bronze in Shade winter. Edible fruit follows white-pink flowers.

Viburnum carlesii Korean Spice Oval, 5-9 White-pink, Sun Fragrant-flowered, deciduous viburnum. viburnum spreading April-May Part sun branches

24 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

ARGE SHRUBS

5-8 FEET HIGH

sumac

Botanical name Common name Growth Flowers Exposure Remarks

Abelia grandiflora Glossy abelia Rounded, 6-9 White-pink, Sun Broadleaf evergreen with glossy, dark dense June-Nov Part sun green foliage. Purple sepals persist into winter.

Abelia grandiflora Edward Goucher Rounded 7-9 Lavender-pink, Sun Evergreen with bronzy foliage in winter. 'Edward Goucher' abelia June-Nov Part sun

Aucuba japonica Japanese aucuba Rounded, 7-9 Purplish green, Sun Broadleaf evergreen. Bright red berries dense March-April Part sun during winter. Variety 'Gold-dust' has yellow-spotted leaves; other varieties have slender or broad leaves. Needs a poUinizer.

Berberis darwinii Darwin barberry Oval, 7-9 Golden- Sun Broadleaf evergreen. Most useful at dense yellow, Part sun 4-5 feet high; has been known to grow April to 8 feet. Foliage is small, holly-like, and dark green.

Berberis julianae Wintergreen Oval 6-9 Yellow, Sun Broadleaf evergreen. Makes a dense, barberry May Part sun spiny hedge.

Buddleia davidi Butterfly bush V-shaped 5-9 Lilac, Sun Deciduous, upright shrub. Bears fragrant July-Sept Part sun flowers on long spikes. Grows rapidly to 6-8 feet high and 4-6 feet wide. Attracts butterflies.

Buxus sempervirens Common box Rounded 5-9 Sun Broadleaf evergreen hedge or specimen Part sun plant. Grows slowly to a height of 10 feet or more; can be kept lower by pruning.

Callicarpa bodinieri Beauty berry Oval 5-9 Lilac, Sun Deciduous shrub noted for its fall display July-Aug Part sun of clustered, violet-colored berries.

Calycanthus Common Rounded 5-9 Reddish- Sun Deciduous shrub with dark green leaves; floridus sweetshrub brown, Part sun dark reddish-brown, fragrant flowers. June-July

25 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LARGE SHRUBS

Botanical name Common name Growth Flowers Exposure Remarks

Camellia japonica Common camellia Oval 7-9 Various Sun Many varieties of this broadleaf ever- green shrub are available.

Camellia sasanqua Sasanqua camellia Oval 7-9 Various Sun Winter-blooming, valued for its finer- textured leaves and winter flowers.

Chaenomeles Flowering Spreading, 5-9 Red scarlet. Sun Deciduous or semi-evergreen shrub. speciosa quince erect March-April Part sun Scarlet or white to dark red flowers, depending on variety.

Chimonanthus Wintersweet Rounded 7-9 Yellow, Sun Deciduous. Howers are fragrant. fragrans Jan-March Part sun

Choisya temata Mexican orange Upright 6-9 White, Sun Evergreen shrub with clusters of fragrant May-July Part sun white flowers. May grow to 8 feet high.

Clethra alnifolia Summersweet Oval, 5-9 White-pink, Sun Deciduous. Fragrant flowers, tidy habit. rounded June Part sun Tolerates shady conditions. Shade

Comus alba Tartarian V-shaped, 5-9 White, Sun Deciduous. Dark green foliage; some dogwood upright June Part sun varieties have variegated foliage. Twigs are red.

Cortaderia selloana Pampas grass Rounded 7-9 Silvery Sun Giant ornamental grass with long, arch- yellow, ing, razor-sharp blades. Silvery panicles Sept are 2 or 3 feet long on tall stalks.

Cotoneaster Franchet Rounded 7-9 Pinkish white, Sun Broadleaf evergreen. Slender, arching franchetii cotoneaster June Part sun stems and gray leaves. Orange-red fruit.

Cotoneaster Parney Rounded 7-9 White, Sun Vigorous broadleaf evergreen. Red pameyi (C. lactea) cotoneaster July-Aug Part sun fruit in fall.

Elaeagnus ebbingei Gilt Edge Rounded 7-9 Sun Evergreen in warmer areas; semi-deciduous 'Gilt Edge' silverberry in colder areas. Large, deep green leaves are banded with golden yellow.

Enkianthus Redvein Erect, 5-9 White-red, Sun Deciduous shrub. Bell-shaped flowers hang campanulatus enkianthus oval May in clusters in April and May.

Escallonia x Appleblossom Rounded, 7-9 Pinkish-white, Sun Broadleaf evergreen. Arching branches and langleyensis escallonia arching June-July Part sun good show of flowers. 'Appleblossom'

26 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LARGE SHRUBS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Euonymus alata Winged euonymus Rounded 4-9 Insignificant Sun Deciduous shrub. Grows to 10 feet high or Part sun more. Horizontally spreading branches. Crimson-scarlet fall color.

Fatsia japonica Japanese fatsia Oval 8-9 Insignificant Sun A tropical-appearing broadleaf ever- to rounded Part sun green with dark glossy green leaves up to 16 inches across. May grow to 12 feet high. Occasional frost injury.

Forsythia x intermedia Lynwood forsythia Rounded 5-9 Yellow, Sun Deciduous, early spring bloomer. 'Lynwood' Feb-April Part sun

Forsythia viridissima Greenstem Rounded 6-9 Yellow, Sun Develops a purple-green fall color. forsythia March-April Part sun

Hydrangea paniculata Peegee panicle V-shaped or 4-9 White to Sun Grows to considerable height. Large 'Peegee' hydrangea rounded purplish, Part sun flower clusters make it attractive. Aug-Sept

Hydrangea Oakleafed Rounded 4-9 White, Sun Deciduous shrub with deeply lobed quercifolia hydrangea June-July Part sun leaves, clustered white flowers. Shade

Juniperus chinensis Pfitzer juniper Spreading 4-9 Sun Vigorous conifer; grows to 5 feet high or 'Pfitzeriana' horizontally Part sun more. Keep low by removing higher branches. Plant 5-6 feet apart for quick cover. Tolerates dry situations.

Juniperus chinensis Sea Green juniper V-shaped 5-9 Sun Bright green foliage. Can grow to 6 feet 'Sea Green' Part sun tall and wide.

Juniperus squamata Meyer singleseed V-shaped, 5-9 Sun Distinguished by blue and purple tints. 'Meyeri' juniper irregular Part sun

Kalmia latifolia Mountain laurel Rounded 7-9 White to light Sun Treat like a rhododendron. Keep soil moist kalmia pink, and acidic. Many varieties. May-June

Kerria japonica Double Japanese V-shaped 5-9 Yellow, Sun Green stems are conspicuous in winter. 'Pleniflora' kerria to oval April-May Part sun May spread if not confined.

Kolkwitzia amabilis Beautybush Rounded 5-9 Lavender- Sun Hardy and vigorous deciduous shrub. pink, Part sun Grows in infertile soil with minimal May-June moisture.

27 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LARGE SHRUBS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Magnolia liliiflora Lily magnolia Oval 6-9 Purple and Sun Deciduous shrub. Grows to 10-12 feet white, Part sun high. Petals are deep purple outside. March-April

Magnolia stellata Star magnolia Oval 6-9 White, Sun Deciduous shrub, may grow to 10-12 feet to round March-April Part sun high.

Mahonia lomarifolia Burmese mahonia Upright 8-9 Yellow, late Sun Light green foliage. Structure is similar winter Part sun to Oregon grape but larger and more coarse Shade textured.

Miscanthus sinensis Silvergrass Upright 4-9 Sun Ornamental grass. Can be planted singly Part sun or in mass for effect.

Nandina domestica Nandina Oval 7-9 White, Sun Erect habit gives this broadleaf evergreen (Heavenly June-July Part sun distinction. Grows well in most soils to bamboo) an ultimate height of 6 feet or more.

Osmanthus Chinese holly Rounded 7-9 White, Sun Broadleaf evergreen with hollylike heterophyllus Sept-Oct Part sun leaves. May exceed 8 feet high. Good screen plant. Fragrant.

Phomtium tenax New Zealand flax Upright 8-9 Dull red, Sun Ascending, sword-shaped leaves from summer Part sun 5-8 feet long.

Pieris japonica Japanese pieris Oval 7-9 White, Sun May ultimately grow to 10 feet in many April-May Part sun years; can be kept lower if higher branches are removed.

Punica granatum Pomegranate Rounded 7-9 Scarlet, Sun Deciduous shrub; grows to 10 feet high. May-Sept Part sun Ascending branches and glossy green leaves. Flowers are scattered over plant all summer.

Pyracantha coccinea Kasan scarlet Rounded, 7-9 White, Sun Glossy evergreen foliage and orange-red 'Kasan' firethom irregular May-June Part sun berries. Can be used as a screen, espalier, or hedge plant. Occasional winter injury.

Rhododendron Anah Kruschke Rounded 6-9 Light purple, Sun A compact plant. Can grow in near-neutral 'Anah Kruschke' rhododendron May soils in full sun.

Rhododendron Augustine Oval 7-9 Shades Sun Broadleaf evergreen. Several light to dark 'Augustinii' rhododendron of blue, Part sun color forms. April-May

28 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LARGE SHRUBS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Rhododendron Blue Diamond Oval 7-9 Lavender- Part sun Broadleaf evergreen. Grows to 5 feet high 'Blue Diamond' rhododendron to round blue, or more. Useful because of bluish flowers. April Fertilizer is not beneficial.

Rhododendron Crater Lake Upright 7-9 Blue, Sun A small-leafed, upright plant. 'Crater Lake' rhododendron May

Rhododendron Lees Scarlet Rounded 7-9 Red, Sun This rhododendron blooms in fall, winter, 'Lees Scarlet' rhododendron early, and very early spring. see remarks

Rhododendron Lens Monarch Upright 7-9 Pink, Sun Good foliage and huge flowers. 'Lens Monarch' rhododendron May

Rhododendron Mrs. Fumivall Rounded 7-9 See remarks, Part sun Rounded, slow-growing broadleaf ever- 'Mrs. Fumivall' rhododendron May green. Clear pink blossoms with sienna blotch. Dark green leaves.

Rhododendron Western Upright 7-9 White or Sun Flowers are fragrant. One of the better occidentale azalea to round pinkish Part sun native plants. Deciduous. with yellow, May-June

Rhododendron Old Copper Rounded 6-9 Copper, Sun Compact plant. Tolerates full sun and 'Old Copper' rhododendron May heat. Flowers are copper color.

Rhododendron Purple Splendour Rounded, 7-9 Purple, Sun Dark purple. Evergreen foliage, some- 'Purple Splendour' rhododendron irregular May-June Part sun what glossy, dark green.

Rhododendron Royal azalea Oval to round 7-9 Pink, Sun Deciduous azalea with clear pink bloom. schlippenbachii April-May Part sun

Rhododendron Vulcan Rounded 6-9 Red, Sun Compact and rounded. Bright red flowers. 'Vulcan' rhododendron May Thrives in full sun.

Rhus typhina Cutleaf staghom Rounded or 4—9 Greenish, Sun Irregular in form; spreading. Foliage is 'Laciniata' sumac irregular June-July Part sun light green, turns yellow and crimson in fall. Suckers freely.

Salix purpurea Purple Osier Rounded 4-9 Sun Deciduous plant used for clipped or willow Part sun undipped hedge. Gray-green foliage.

Spiraea prunifolia Bridalwreath Rounded 5-9 White, Sun Brilliant red and yellow fall color. spirea April-May Part sun

Spiraea x vanhouttei Vanhoutte spirea Rounded 4-9 White, Sun Useful in all zones. May Part sun

29 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

LARGE SHRUBS

Botanical name Common name Growth Zone Flowers Exposure Remarks

Stranvaesia davidiana Chinese Upright, 7-9 White, Sun Broadleaf evergreen. Arching branches. stranvaesia spreading May Part sun Flowers have disagreeable odor. Red berries.

Syringa persica Persian lilac . Rounded 5-9 Pale lilac, Sun Hardy, free-flowering lilac. May Part sun

Taxus media Browns yew Globe 4-9 Sun Dense, evergreen shrub with semi-erect 'Brownii' Part sun branches, which form a rounded shape.

Thuja orientalis Dwarf golden Pyramidal 6-9 Sun Densely branched evergreen. Tips of ' Aurea Nana' arborvitae green foliage are bright golden, turning bronze in winter.

Viburnum burkwoodii Burkwood Rounded 5-9 Pink-white, Sun Semi-evergreen, vigorous shrub. Fra- viburnum March-April Part sun grant flowers, dark green foliage.

Viburnum opulus Common Rounded 4-9 White, Sun Flowers in round clusters, in masses in 'Sterile' snowball May-June Part sun early summer. Deciduous. viburnum

Viburnum plicatum Doublefile Rounded 5-9 White, Sun Deciduous. Flowers arranged in double tomentosum viburnum May-June Part sun rank. Bright red fall color.

Viburnum tinus Spring Bouquet Rounded 7-9 Pink-white, Sun Broadleaf evergreen shrub. Clusters of 'Spring Bouquet' viburnum March-April Part sun pink-white flowers are followed by blue berries.

Weigela flqrida Old-fashioned Rounded 4-9 Various Sun Several color forms. Deciduous. weigela Part sun

30 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

ALL SHRUBS AND SHRUBBY TREES

8-20 FEET HIGH

amur maple

Botanical name Common name Growth Flowers Exposure Remarks

Acer circinatum Vine maple Rounded or 4-9 Reddish- Sun Shrubby, deciduous native. Viny or tree- irregular purple. Part sun like to 10 or 15 feet; orange-scarlet or April-May Shade yellow fall color.

Acer ginnala Amur maple Shrubby or 5-9 Yellow-white, Sun Fragrant flowers. Foliage red in fall. tree form May Part sun Grown as multiple-trunked large shrub or single-trunk tree.

Acer palmatum Japanese maple Irregular 5-9 Sun Numerous varieties and selections. Unique Part sun . leaves and bark characteristics.

Amelanchier alnifolia Saskatoon Upright 4-9 White-pink, Sun New foliage is bronze, changing to green. serviceberry April Blue-black fruits follow spring flowers. Gray bark.

Arbutus unedo Strawberry Oval 7-9 Pinkish or Sun Dark-green broadleaf evergreen. madrone white, Part sun Round, strawberry-colored fruit. Shrub Sept-Dec or tree form to 20 feet high.

Caragana arborescens Siberian V-shaped 4-9 Yellow, Sun Deciduous. Use as a hedge plant, screen, peashrub or oval March-May Part sun or lower part of a windbreak plant- ing. Cut back if dense form is required.

Ceanothus thyrsiforus Blueblossom Oval 7-9 Blue, Sun Broadleaf evergreen native. Grows to ceanothus May-July 15 feet high.

Ceanothus velutinus Snowbrush Rounded 7-9 White, Sun Glossy green broadleaf evergreen ceanothus June-July native. Grows to 12-15 feet high.

Chamaecyparis Slender hinoki Pyramidal 4-9 Sun Evergreen. Somewhat open, gracefully obtusa 'Gracilis' false cypress arching. Deep green; new growth is reddish.

31 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

TALL SHRUBS AND SHRUBBY TREES

Botanical name Common name Growth Flowers Exposure Remarks

Cotinus coggygria Common Rounded 5-9 See remarks, Sun Deciduous shrub; grows to 15 feet high. smoketree June-Aug Part sun Large clusters of small yellow flowers gradually fade and are replaced by elongat- ing sterile flowers, which become clothed with fuzzy hairs, giving the tree its "smoky" appearance. Green- and purple-leafed varieties are available.

Elaeagnus ebbingei Ebbinge's Upright 7-9 Insignificant Sun Evergreen in wanner areas; semi-deciduous silverberry Part sun in others. Green foliage with silver scales on the surface. Mid- to late autumn flowers are tiny but fragrant.

Forsythia suspense Weeping forsythia Oval, 5-9 Yellow, Sun Good forsythia where weeping effect is pendulous Feb-March Part sun desired.

Hamamelis intermedia Diane hybrid Rounded 5-9 Red, Sun Deciduous shrub. Bright red flowers bloom 'Diane' witchhazel Jan-March Part sun in late winter before leaves form. Good fall color.

Hamamelis virginiana Common Rounded 5-9 Yellow, Sun Many-stemmed, large shrub. Very fragrant witchhazel Nov-Jan Part sun yellow, ribbon-like petals in late fall.

Hibiscus syriacus Rose of Sharon V-shaped 5-9 See remarks. Sun Deciduous shrub. Ascending branches. or oval Aug-Sept Part sun Varieties come in several colors from white, red, and purple to violet.

Holodiscus discolor Creambush Oval 4-9 Creamy white, Sun Deciduous shrub; grows to 12 feet high. rockspirea June-July Part sun Large panicles of flowers are its chief (Oceanspray) attribute.

Juniperus chinensis Wintergreen Pyramidal 4-9 Sun Narrow pyramidal growth to 15-20 feet 'Wintergreen' juniper Part sun high.

Juniperus virginiana Skyrocket juniper Columnar 4-9 Sun Blue-gray foliage. Very narrow column. 'Skyrocket'

Lagerstroemia indica Crape myrtle Upright oval 7-9 Various, Sun Deciduous flowering small tree. Clusters June-July Part sun of long-lasting crinkly, crepe-like blooms in summer. Good fall color. Exfoliating bark.

Ligustrum japonicum Japanese privet Oval 7-9 White, Sun Broadleaf evergreen screen plant. Dark July-Sept Part sun green, glossy leaves. Grows to 10-20 feet high. Plant in partial shade in southern Oregon. Protect from damaging prevailing winds.

32 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

TALL SHRUBS AND SHRUBBY TREES

Botanical name Common name Growth Zone Flowers Exposure Remarks

Ligustrum California privet Oval 6-9 White, Sun Deciduous or half-evergreen hedge plant. ovalifolium July Part sun Grows to 15 feet high. Can be maintained as a much shorter hedge. Variegated varieties available.

Ligustrum vulgare Common privet Rounded 5-9 White, Sun Deciduous or half-evergreen shrub. Grows June-July Part sun to 12-15 feet high. Responds well to pruning.

Lonicera tatarica Tatarian Rounded 4-9 Pink to white, Sun Deciduous. Grows to about 10 feet high. honeysuckle April-May Part sun

Philadelphus Sweet Upright 4-9 White, Sun Very fragrant, clustered flowers. Exfoliating coronarius mockorange June Part sun bark, persistent fruit capsules.

Philadelphus Virginalis Oval 5-9 White, Sun Double or semidouble fragrant flowers. virginalis mockorange June Part sun

Photiniafraseri Fraser photinia Oval 7-9 White, Sun Broadleaf evergreen. New young leaves are April-May Part sun dark red. Small white flowers.

Photinia glabra Japanese photinia Oval 7-9 White, Sun Dense broadleaf evergreen. Useful as a May, June Part sun screen.

Picea pungens Fat Albert Broad 4-9 Sun Densely branched, broadly pyramidal ever- 'Fat Albert' Colorado spruce green tree. Rich blue coloring.

Prunus cistena Purpleleaf Rounded 4-9 Pinkish, Sun Large shrub with purple-red foliage. Very sandcherry April-May hardy.

Prunus laurocerasus English laurel Rounded 7-9 White, Sun Vigorous, coarse-textured broadleaf June-July Part sun evergreen.

Prunus lusitanica Portuguese Oval 7-9 White, Sun Broadleaf evergreen. Grows to 20 feet high. laurel June-July Part sun Good hedge plant if pruned constantly. ■ Requires lots of space.

Pyracantha coccinea Laland firethom Irregular 5-9 White, Sun One of the most hardy broadleaf ever- 'Lalandei' May-June Part sun greens. Grows to 20 feet high. Orange-red berries. Good for espalier.

Rhododendron Anna Rose Upright 7-9 Pink, Sun Vigorous. Pink flowers, excellent foliage. 'Anna Rose Whitney' Whitney May rhododendron

Rhododendron Lavender Girl Oval, 7-9 Lavender, Sun Broadleaf evergreen. Rather light green 'Lavender Girl' rhododendron irregular May Part sun leaves. Vigorous, somewhat irregular in form. Grows to 8-10 feet high. 33 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

TALL SHRUBS AND SHRUBBY TREES

Botanical name Common name Growth Zone Flowers Exposure Remarks

Rhododendron Sappho Rangy 6-9 White, purple. Sun Vigorous, open and rangy plant; can 'Sappho' rhododendron May be pruned heavily and will grow an abundance of new shoots. Blossoms are white with a purple blotch.

Rhododendron Taurus Upright 7-9 Red, Sun A tall, full plant with good red flowers. 'Taurus' rhododendron May Does well in full sun.

Rhododendron Trude Webster Upright 7-9 Pink, Sun Vigorous grower with large foliage. 'Trude Webster' rhododendron May

Rhus typhina Staghom sumac Rounded or 4-9 Greenish, Sun Deciduous shrub or tree. Grows to 20 feet irregular June-July high or more. Greenish flowers are followed by crimson fruiting bodies. Bright red foliage in fall. Suckers freely.

Ribes sanguineum Flowering currant Upright 4-9 Red, Sun Upright growth to 12 feet high. Drooping March-April Part sun clusters of red flowers in spring. Vigorous Shade grower.

Salix caprea Weeping pussy Drooping 4-9 Sun Small tree to 8 feet high and branches 'Pendula' willow Part sun that droop to the ground. Pinkish-gray wooly catkins emerge before leaves in spring.

Syringa vulgaris Common lilac Oval 4-9 Various, Sun Innumerable varieties of the common lilac varieties to rounded April-May Part sun differ primarily in color, ranging from white, pink, blue, to purple in single- or double-flower forms. Most varieties become treelike and grow to 15-20 feet high. Irrigation required.

Tamarix parviflora Salt cedar Upright, 4-9 . Pink, Sun Deciduous shrub or tree; grows to 15 feet irregular April-May high. Tolerates alkaline soil and dry loca- tions.

Thuja occidentalis Emerald green Narrowly 4-9 Sun Slender conifer useful as a narrow hedge. 'Smaragd' arborvitae columnar Part sun Ultimately grows to 15-20 feet high.

Viburnum lantana Wayfaring tree Rounded 4-9 White, Sun Deciduous shrub. Grows to 15 feet. viburnum April-May Part sun Fruit is red in July, black later.

Viburnum Leatherleaf Oval 7-9 Yellow-white, Sun Broadleaf evergreen. Grows to 15 feet rhytidophyllum viburnum May-June Part sun high. Large, leathery leaves.

Vitex agnus-castus Chaste tree Rounded 6-9 Lilac, Sun Deciduous. Rapid grower, multi-trunked. June-Aug Fragrant blooms at branch tips in summer.

34 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

T'TT-, REES

10-20 FEET HIGH

crabapple

Botanical name Common name Growth Zone Flowers Exposure Remarks

Acer ginnala Amur maple Rounded 2-9 Yellow Sun One of the hardiest maples. Consistent fall clusters, color. Can be grown as a single-trunk tree March or as a multiple-trunked large shrub. Fragrant flowers.

Aesculus pavia Red buckeye Oval 5-9 Bright red. Sun Deciduous tree. Grows to about 20 feet high. May Flowers in upright panicles.

Chamaecyparis Golden hinoki Upright 4-9 Sun Strong grower with erect branches. New obtusa 'Tetragona False cypress Part sun growth is bright yellow; inner foliage is Aurea' green.

Chionanthus retusus Chinese fringe Rounded 5-9 White, Sun Erect terminal clusters of white fringe- tree May-June Part sun like flowers. Deciduous.

Cupressus arizonica Blue pyramid Pyramidal 6-9 Sun Compacdy branched, symmetrical form; 'Blue Pyramid' cypress can grow to 20 feet tall and 12 feet wide. Good gray-blue foliage. Drought-tolerant once established.

Comusflorida Flowering Upright, 5-8 White bracts Sun Deciduous, oval, pointed, dark green leaves dogwood spreading surround turn reddish purple in fall. Possible insignificant problems with anthracnose disease. flowers, April-May

Comus kousa Chinese dogwood Rounded 5-9 White, Sun Pointed white flowers in early summer. June Part sun More disease resistant than C. florida. Hardy. Many varieties available. Blooms later than other dogwoods. Persistent red fruit.

Cryptomeria japonica Japanese cedar Narrow, 6-9 Sun Fine-textured conifer. Yellow foliage. 'Sekkan-sugi' upright Part sun Slow grower.

Magnolia stellata Star magnolia Rounded 5-9 White, Sun Deciduous, dense shrub or small tree. April-May Fragrant, star-shaped flowers open from silky buds.

35 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

TREES—10 TO 20 FEET HIGH

*a

Botanical name Common name Growth Zone Flowers Exposure Remarks

Magnolia Saucer magnolia Oval 5-9 See remarks, Sun Deciduous, shrubby tree; grows to 25 feet soulangiana to round March-April Part sun high. Flower petals are dark or pale purple outside and white inside.

Malus 'Adirondack' Adirondack Upright V 4-9 White, Sun Deciduous tree. Grows to about 18 feet high. crabapple May Part sun Flowers heavily. Excellent disease resistance.

Malus floribunda Japanese flowering Spreading 4-9 Pink, Sun Rowers are pink, fading to white. Good to crabapple May Part sun excellent disease resistance. Fruit is yellow- red.

Malus 'Louisa' Louisa crabapple Pendulous 4-9 Pink, Sun Weeping crabapple. Grows to about branches May Part sun 15 feet high with dark green foliage. Good disease resistance. Fruit is yellow.

Malus 'Prairiefire' Prairiefire Rounded 4-9 Red, Sun Bright pinkish-red flowers and dark red crabapple May Part sun fruit. Foliage is purple, becoming reddish green. Excellent disease resistance.

Malus 'Red Jewel' Red Jewel Pyramidal 4-9 White, Sun Good disease resistance. Fruit is very red crabapple May Part sun and very persistent, remaining on the tree until spring in mild winter areas.

Malus sargentii Sargent crabapple Low spreading 4-9 White, Sun Bushy tree; grows to 8-10 feet high with May Part sun 15-foot spread. Deep green foliage. Dark red fruit.

Malus x zumi Zumi Calocarpa Spreading, 5-9 White, Sun A standard for comparison for white- 'Calocarpa' crabapple rounded May Part sun flowered crabapples. Fruit is red and persistent. Good disease resistance.

Pinus heldreichii Bosnian pine Pyramidal 3-9 Sun A small, symmetrical tree, dark green leucodermis needles. Grows to about 15 feet high.

Pinus strobus Columnar white Columnar 3-9 Sun Erect branching habit. Soft, blue-green 'Fastigiata' pine needles.

Prunus serrulata Amanogawa Columnar 6-9 Pinkish-white, Sun Erect stems give it form of Lombardy 'Amanogawa' Oriental cherry March-April Part sun poplar. Flowers are double.

Prunus serrulata Mt. Fuji cherry Spreading 5-9 White, Sun Horizontal tree. Grows to 15 feet high 'Mt Fuji' March-April Part sun with a spread of 30 feet. Double or semidouble flowers.

36 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

TREES—10 TO 20 FEET HIGH

Botanical name Common name Growth Zone Flowers Exposure Remarks

Prunus subhirtella Weeping cherry Rounded, 5-9 Pink, Sun Good early, pink-flowering tree. Grows 'Pendula Plena Rosea' pendulous April Part sun to nearly 25 feet high. Graceful form makes this one of the best weeping trees.

Rhamnus frangula Buckthorn Columnar 3-9 Insignificant Sun Deciduous small tree. Multi-stemmed; Part sun grows to form a narrow, compact tree. Useful in hedges, screens, or as a specimen.

Taxus baccata Irish yew Columnar 6-9 Sun Slow-growing narrow column to 20 feet 'Fastigiata' Part sun high. Foliage is dark green. Many varieties available.

Ulmus glabra Camperdown Rounded, 5-9 Sun This 15- to 20-foot-high weeping elm forms 'Camperdownii' Scotch elm pendulous Part sun a canopy to the ground. Foliage is large and dark green. Susceptible to insect dam- age. Moderately susceptible to Dutch elm disease.

37 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

REES

20-30 FEET HIGH

hawthorn

Botanical name Common name Growth Flowers Exposure Remarks

Acer griseum Paperbark maple Upright 5-9 Insignificant, Sun Exfoliating orange to cinnamon-brown bark March creates year-round interest.

Amelanchier Autumn Brilliance Upright, 4-9 White, Sun Deciduous tree with graceful clusters of grandiflora serviceberry spreading April Part sun white flowers before leaves appear. Silver- 'Autumn Brilliance' gray bark, good fall color. Many varieties available.

Cercis canadensis Eastern redbud Oval 5-9 Rosy-pink, Sun Flowers occasionally are damaged by frost. to round April-May Part sun

Chamaecyparis Lawson Narrow, 6-9 Sun Port-Orford-cedar variety. Useful as a lawsoniana false cypress pyramidal Part sun hedge or windbreak plant. Grows slowly 'Oregon Blue' but persistently. Susceptible to root rot.

Chamaecyparis Weeping Alaskan Narrow, 5-9 Sun Main trunk grows straight up, and nootkatensis cedar pyramidal Part sun branchlets weep straight down from 'Pendula' drooping branches.

Comus mas Cornelian cherry Rounded 5-9 Yellow, Sun Masses of tiny yellow flowers, which appear March Part sun very early in spring, and exfoliating bark make this tree unique.

Crataegus Crimson Cloud Oval 4-9 Red, Sun Resistant to fungus leaf spot disease. laevigata hawthorn May-June Part sun Rowers are bright red with white centers; 'Crimson Cloud' bright red fruit follows.

Crataegus x lavallei Lavalle hawthorn V-shaped, 4-9 White, Sun Dense, dark green foliage. Orange-red fruit irregular May-June Part sun in fall and winter.

Crataegus Washington Oval 4-9 White, Sun Thorny, low-headed tree with brilliant phaenopyrum hawthorn June-July Part sun red fruit in fall and winter.

Halesia Carolina Silverbell Upright, 5-9 White, Sun Deciduous tree. Clusters of bell-shaped spreading April Part sun flowers in early spring. Yellow fall color.

38 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

TREES—20 TO 30 FEET HIGH

Botanical name Common name Growth Zone Flowers Exposure Remarks

Koelreuteria Goldenrain tree Rounded 6-9 Yellow, Sun Deciduous tree. Light green leaves. Large paniculata July-Aug Part sun panicles of flowers are followed by yellowish to brown capsules. Tolerates alkaline soil.

Laburnum watered Goldenchain V-shaped 5-9 Yellow, Sun Large hanging clusters of golden-yellow 'Vossii' May-June Part sun flowers. Foliage is dark green.

Malus 'Adams' Adams flowering Rounded 4-9 Pink, Sun Deciduous tree. Fragrant pink flowers crabapple May Part sun are followed by red fruit. Good scab resistance.

Malus 'Robinson' Robinson Upright, 4-9 Pink, Sun Deciduous tree. One of the fastest growing flowering spreading May Part sun crabapples. Good scab resistance. crabapple

Malus tschonoskii Tschonoskii Upright 5-9 White, Sun Deciduous tree; foliage changes from flowering May Part sun Part sun silvery green in spring, to green in crabapple summer, then to orange-purple and scarlet in fall.

Myrica califomica Pacific wax Rounded 7-9 Sun Broadleaf evergreen shrub or small myrtle Part sun tree. Grows to 20 feet high or more. Tolerates sandy or infertile soil.

Oxydendrum Sourwood Oval 5-9 White, Sun Deciduous tree. Lustrous green leaves, arboreum July-Aug Part sun brilliant scarlet and purplish fall color. Persistent flower parts are ornamental into winter.

Parrotia persica Persian parrotia Broad, 4—9 See note Sun Deciduous tree. Flowers emerge before pyramidal Part sun leaves in dense, small heads, surrounded by brown bracts. Fall color is a mix of scarlet, orange, and yellow.

Picea pungens Hoops blue spruce Pyramidal 3-9 Sun Considered the bluest form of Colorado 'Hoopsii' blue spruce.

Pinus contorta Shore pine Broad, 5-9 Sun Evergreen, fast growing to 25 feet high. pyramidal Parts sun Dark green needles.

Prunus blireiana Blireiana plum V-shaped, 5-9 Pink, Sun Dark reddish-purple foliage changes to spreading Feb-March Part sun greenish-bronze in summer. Reddish- bronze in fall.

Prunus cerasifera Thundercloud Rounded 5-9 Light pink. Sun Dark, reddish-purple leaves; retains purple 'Thundercloud' plum to oval Feb-March Part sun foliage color through the growing season.

39 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

TREES—20 TO 30 FEET HIGH

Botanical name Common name Growth Zone Flowers Exposure Remarks

Prunus subhirtella Autumn flowering Upright, 5-9 Light pink. Sun Deciduous tree. Blooms in fall, again in 'Autumnalis Rosea' cherry spreading Nov and Part sun March. In mild climates, blooms March sporadically all winter.

Prunus subhirtella Whitcomb Upright, 5-9 Pink, Sun One of the earliest cherries to bloom. 'Whitcomb' flowering spreading Feb-March Part sun cherry

Robinia pseudoacacia Globe Rounded 4-9 Rarely Sun Characteristically a ball of foliage on a 'Inermis' blacklocust flowers Part sun stem. Prune annually to keep dense.

Sty rax japonicus Japanese Rounded 5-9 White, Sun Foliage is dark green. Fragrant flowers snowbell May hang in slender racemes hidden by leaves. Hardy. Grows best in moist, acid soil.

Umbellularia Oregon myrtle Rounded 7-9 Yellow-green, Sun Glossy evergreen. Leaves are strongly califomica May-June Part sun aromatic when crushed. Wood is valued for Shade woodworking.

40 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

REES

30-50 FEET HIGH

European mountain ash

Botanical name Common name Growth Flowers Exposure Remarks

Acacia decurrens Greenwattle acacia Oval 8-9 Yellow, Sun Fine-textured, light green foliage with Feb-March bright yellow, fragrant flowers. In Oregon, hardy from Roseburg to Coos Bay south.

Albiuia julibrissin Pink silktree Spreading 7-9 Pink, Sun Fine texture of dark green leaves and 'Rosea' June-Aug bloom makes this tree popular. Tender in zone 7.

Alnus glutinosa Black alder Broad, 4-9 Sun A fast-growing tree for tough sites. pyramidal Part sun Can grow in infertile soil and tolerates Shade extremely wet sites.

Carpinus betulus Pyramidal Broad, 5-9 Sun Deciduous tree. Very formal appearance. 'Fastigiata' European pyramidal Tolerates heat and drought. hornbeam

Catalpa Common catalpa Oval 5-9 White, Sun Coarse-textured tree. May reach 50 feet bignonioides June-July Part sun high. Grows in most soils with moderate moisture.

Cercidiphyllum Katsura tree Upright, 5-9 Insignificant Sun Deciduous tree. Foliage is heart-shaped, japonicum pyramidal Part sun bluish green; yellow to orange in fall.

Cladrastis kentukea American Oval 5-9 White, Sun Rowers are borne on long, pendulous yellowwood to V-shaped June panicles.

Fraxinus Patmore ash Oval 3-9 Sun Dark green, glossy foliage. Extremely pennsylvanica hardy. Seedless, deciduous. Good for urban 'Patmore' sites. Many varieties available.

Malus 'Dolgo' Dolgo flowering Upright, 3-9 White, Sun Deciduous. White flowers are followed by crabapple spreading April-May red I'/i-inch edible fruit.

Picea pungens Koster blue Pyramidal 4-9 Sun Slow-growing but persistent tree. Foliage 'Koster' Colorado spruce is light silvery green. Many varieties available.

41 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

TREES—30 TO 50 FEET HIGH

Botanical name Common name Growth Zone Flowers Exposure Remarks

Prunus sargentii Columnar Sargent Columnar 4-9 Pink, Sun Deciduous. Narrow, upright form makes 'Columnaris' flowering cherry April this a good street tree. Good fall color and mahogany-colored bark.

Prunus serrulata Kwanzan V-shaped 6-9 Pink, Sun Vigorous, double-flowered cherry. Does 'Kwanzan' flowering April Part sun well in rich, well-drained soil with cherry moderate moisture.

Pyrus calleryana Aristocrat Pyramidal 4-9 White, Sun White blooms come out before leaves. 'Aristocrat' flowering pear March-April Deciduous; good fall color. Many varieties available.

Robinia ambigua Idaho pink Oval 4-9 Pale pink, Sun Variety of black locust. Tolerates poor soil 'Idahoensis' locust April-May and alkaline, dry situations.

Sciadopitys Japanese umbrella Pyramidal 5-9 Sun Evergreen, pine-like conifer. Leaves are verticillata pine very narrow and waxy. Slow growing.

Sorbus aucuparia European Oval 4-9 White, Sun Dull green foliage turns yellow in fall. mountain ash to round May Part sun Red berries in August and September. Susceptible to fire blight disease.

Stewartia Japanese stewartia Upright 6-9 White, Sun Deciduous, slow growing. Flowers are pseudocamellia July Part sun like small camellia blooms. Fall color is yellow to bronze.

Tilia cordata Greenspire linden Pyramidal 4-9 Insignificant Sun Deciduous; leaves dark green. A very 'Greenspire' Part sun symmetrical tree.

Ulmus parvifolia Chinese elm Rounded 5-9 Sun Deciduous to semi-evergreen. Small, oval, dark green, glossy leaves. Resistant to Dutch elm disease.

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REES

50-75 FEET HIGH

scarlet oak

Botanical name Common name Growth Zone Flowers Exposure Remarks

Aesculus camea Red Rounded 4—9 Rose-red, Sun Foliage is dark green. Casts dense shade, horsechestnut or oval April-May Large flowers. Fruit is prickly and may be a problem.

Aesculus Horsechestnut Oval 4-9 White Sun Similar to red horsechestnut except foliage hippocastanum or round with red. is coarser and a little lighter green. Fruit May may be a problem.

Arbutus menziesi Pacific madrone Oval 7-9 White, Sun Broadleaf evergreen native. Good-quality May-June Part sun foliage and fruit. Smooth reddish-brown bark. Drops leaves and bark.

Betula jacquemontii Jacquemonti Narrow, oval 5-7 Sun Deciduous with yellow fall color. Brilliant birch Part sun white bark.

Betula nigra River birch Oval 4-9 Sun Deciduous green leaves, whitish underneath, Part sun and yellow fall color. Bark is pinkish-beige and smooth when young, peeling and cinnamon brown with age.

Betula pendula European white Oval 4-9 Sun Slow-growing graceful tree. Several types birch or pyramidal are available, including cutleaf, pyramidal, and purple leaf forms. Susceptible to aphids and bronze birch borer.

Celtis occidentalis Common Rounded 2-9 Sun Late to leaf in spring. Tolerates drought, hackberry wind, and alkaline soil.

Fraxinus oxycarpa Claret ash, Narrow to 5-9 Sun Deciduous. Glossy, dark green leaflets turn 'Raywood' Raywood ash spreading bright reddish purple in autumn.

Fraxinus Green ash Rounded 4-9 Sun Hardy shade tree. Grows in most soils pennsylvanica with moderate moisture.

Fraxinus Marshall's Slightly 3-9 Sun Deciduous, dark, glossy green leaves with pennsylvanica seedless ash pyramidal yellow fall color. Pest-resistant and vigorous 'Marshall's seedless' grower.

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TREES—50 TO 75 FEET HIGH

Botanical name Common name Growth Zone Flowers Exposure Remarks

Larix decidua European larch Narrow, 5-9 Sun Deciduous conifer. Needles become conical bright yellow in fall before they drop.

Lithocarpm Tanoak Rounded 7-9 Sun Broadleaf evergreen native of south- densiflorus ern Oregon. Somewhat glossy green leaves. Related to oaks.

Magnolia Southern Oval 7-9 Creamy white, Sun Broadleaf evergreen magnolia. Fragrant grandiflora magnolia June-Aug flowers up to 6 inches across. Does best in rich, well-drained soil.

Metasequoia Dawn redwood Pyramidal 6-9 Sun Deciduous, fast-growing tree. Horizontal glyptostroboides Part sun branches hold bright green, fern-like needles. Fall color ranges from bronze to apricot.

Quercus coccinea Scarlet oak Oval 4-9 Sun Bright green leaves turn scarlet in fall. to rounded

Quercus palustris Pin oak Pyramidal 4-9 Sun Fine-textured, glossy-foliaged plant. Horizontally spreading branches. Leaves remain until spring.

Robinia pseudoacacia Purple Robe Oval 4-9 Purple, Sun A tough, fast-growing tree, well adapted 'Purple Robe' blacklocust May-June to hot, dry climates.

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REES

75-100 FEET HIGH

littleleaf linden

Botanical name Common name Growth Zone Flowers Exposure Remarks

Acer macrophyllum Bigleaf maple Rounded 7-9 Yellow, Sun Vigorous native maple. Dark green April foliage, coarse texture.

Acer platanoides Norway maple Rounded 4-9 Yellow-green, Sun Dense round tree. Light green leaves. April Variety 'Crimson King' has dark purplish-red leaves all summer. Variety 'Schwedler' has reddish leaves in early summer, gradually turning dark green. Many other varieties available.

Catalpa speciosa Western catalpa Pyramidal 5-9 White with Sun Deciduous, large leaves and clusters of yellow, white flowers. Tolerates tough growing June-July conditions. A bold rugged-appearing tree. Persistent fruit.

Fagus sylvatica European beech Oval 5-9 Sun Foliage is dark and lustrous; bark is silver. Good street and shade tree. A variety called 'Purple,' with purplish leaves, also is available. Many other varieties available.

Gymnocladus dioicus Kentucky coffee Oval 5-9 Sun Very fine-textured tree of picturesque tree structure when mature. Persistent fruit.

Juglans regia Persian walnut Rounded 7-9 Sun Strain Carpathian is hardy in zones 4 and (English 5, but a nut crop is not assured. Most walnut) varieties are confined to zones 8 and 9. Leaves are bronze until June.

Nyssa sylvatica Black gum Pyramidal 5-9 Insignificant Sun Deciduous. Dependable fall color even in mild climates.

Pinus nigra Austrian pine Pyramidal 4-9 Sun Excellent as an ornamental or part of a to oval windbreak in all zones. Branches to the ground. Will survive relatively dry condi- tions under cultivation.

Pinus strobus Eastern white pine Pyramidal 3-9 Sun Rapidly growing evergreen. Horizontal branches hold slender, blue-green needles. Good windbreak tree.

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TREES—75 TO 100 FEET HIGH

Botanical name Common name Growth Flowers Exposure Remarks

Populus nigra Lombardy Columnar 4-9 Sun Greedy, invasive root system. Long 'Lombardy' poplar associated with ranches of Idaho and eastern and central Oregon and Washington. Fast growing. Weak wood.

Quercus rubra Red oak Rounded 4-9 Sun Exceptionally fine red fall color.

Tilia cordata Littleleaf linden Oval 4-9 Yellow- Sun Slow-growing deciduous tree. Useful white, when shorter than 50 feet as a shade or July street tree. Fragrant blossoms in July. Requires moderate moisture. Many varieties available.

Zelkova serrata Green Vase V-shaped 5-9 Insignificant Sun Deciduous. An "elm-like" tree without the 'Village Green' zelkova problems of Dutch elm disease.

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REES

MORE THAN 100 FEET HIGH

sweet gum

Botanical name Common name Growth Zone Flowers Exposure Remarks

Acer rub.rum Red maple Rounded 4-9 Red, Sun Good tree for moist locations. Excellent March-April brilliant red and yellow fall color. Many varieties available.

Acer saccharinum Silver maple Oval 4-9 Sun Widely planted in zones 4 and 5 because of to round its vigor and hardiness. Yellow fall color. Weak wood.

Acer saccharum Sugar maple Oval 4-9 Sun One of the most colorful fall trees. Does to round best with summer irrigation.

Cedrus atlantica Atlas cedar Pyramidal 7-9 Sun Conifer of picturesque habit; barely distinguishable from Lebanon cedar. Variety 'Glauca' has waxy, opaque, bluish- gray foliage.

Cedrus deodara Deodar cedar Pyramidal Sun Deodar cedar is distinguished from other cedars by its softer texture and drooping leading shoot.

Ginkgo biloba Ginkgo Broadly 7-9 Sun Structure varies. Becomes very large (Maidenhair pyramidal when mature. Free of insect pests and tree) diseases. Golden yellow fall color. Plant only male trees.

Gleditsia triacanthos Honeylocust Oval 4-9 Greenish, Sun Fast-growing, hardy tree. Extremely June thorny. 'Inermis' is a thomless variety. Yellow fall color.

Gleditsia triacanthos Honeylocust Oval 4-9 Sun Superior forms of honeylocust. Not 'Moraine' to round spiny; produce no fruit. Grow rapidly. 'Shademaster' 'Sunburst' has golden yellow leaves. 'Skyline' 'Sunburst'

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TREES—MORE THAN 100 FEET HIGH

Botanical name Common name Growth Zone Flowers Exposure Remarks

Liquidambar American Pyramidal 6-9 Sun Favorite street tree because of lustrous, styraciflua sweetgum to-oval dark green leaves and brilliant crimson to purplish fall color. Best in nonalkaline soil. Subject to top breakage on windy sites. Fruits are spiny balls, which may be a problem in lawns.

Liriodendron Tulip tree Pyramidal 5-9 Greenish with Sun Fast-growing, useful as a shade or tulipifera to oval orange, street tree. Will not bloom for several May-June years. Does not tolerate alkaline soil. Requires summer irrigation.

Pinus ponderosa Ponderosa pine Columnar 4-9 Sun Conifer. Widely used as a specimen or as to oval a windbreak member. Drought resistant.

Pseudotsuga menziesi Douglas-fir Columnar 4-9 Sun Especially recommended for parks and Part sun roadside plantings in zones 5-9.

Thuja plicata Hogan red cedar Narrow, 5-9 Sun Very dense, upright, narrow pyramid. 'Fastigiata' pyramidal

Tilia americana American linden Oval 4-9 Sun Hardy deciduous tree of coarse texture. Does not tolerate dry situations.

Tsuga heterophylla Western hemlock Columnar 7-9 Sun Recommended for parks and roadsides. Part sun

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INES

kiwi vine

Botanical name Common name Growth Zone Flowers Exposure Remarks

Actinidia chinensis Kiwi vine Twining 6-9 Cream, Sun A 30-foot deciduous vine with 5- to August Part sun 8-inch leaves. Male and female plants.

Akebia quinata Fiveleaf akebia Twining 5-9 Chocolate- Sun Palmately compound bluish-green leaves. purple, Part sun Pendulous stalks hold chocolate to rosy- May-June purple fragrant flowers. Semi-evergreen.

Campsis radicans Trumpet vine Clings by 4-9 Orange, Sun A 40-foot deciduous vine. Hummingbird aerial rootlets July-Sept Part sun plant.

Celastrus orbiculata Oriental Twining 5-9 Insignificant Sun A 30-foot deciduous vine. Dark green bittersweet Part sun foliage. Fruit is orange-yellow and scarlet.

Celastrus scandens American Twining 4-9 Insignificant Sun A 30-foot deciduous vine. Dark green bittersweet Part sun leaves. Yellow and crimson fruit.

Clematis armandii Armand clematis Climbs 7-9 White, Sun Broadleaf evergreen. Grows to 20 feet. with tendrils March-April Part sun

Clematis montana Anemone clematis Twining 6-9 White, Sun Deciduous vine. Grows to 20-30 feet. April-May Part sun Prune lightly. Flowers form on old wood. Variety 'Rubens' has pink flowers.

Clematis paniculata Sweet autumn Clings 4-9 White, Sun Deciduous vine. Grows to 30-40 feet. clematis by petioles Sept-Oct Part sun Small flowers in panicles.

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VINES

Botanical name Common name Growth Zone Flowers Exposure Remarks

Clematis (horticultural Edith Clings 5-9 White, Sun Many clematis varieties are available in varieties; check by petioles Spring Part sun various color forms. Those bearing with local nurseries Jackman Clings Violet-blue, Sun flowers on new wood may be pruned for more information) by petioles Summer Part sun to within 6 inches of the ground in early Lady Betty Balfour Clings Purple-blue, Sun spring to encourage new growth. Those by petioles Summer/fall Part sun bearing flowers on old (last year's) Mme Andre Clings Crimson, Sun growth should be groomed after blooming by petioles Summer Part sun by cutting some stems halfway or more. Nelly Moser Clings White, Sun by petioles purple, Part sun Spring Niobe CUngs Dark red, Sun by petioles Summer Part sun The President Clings Purple, Sun by petioles Spring/ Part sun summer Royalty Clings Purple, Sun by petioles Spring/ Part sun summer

Euonymus fortunei Bigleaf Viny 4-9 Insignificant Sun Broadleaf evergreen shrub if trained. vegetus wintercreeper or shrubby Part sun Also forms climbing vine or groundcover. euonymus Shade Variegated varieties are available.

Hedera helix English ivy Climbs 6-9 Insignificant Sun Broadleaf evergreen vine. Capable of by aerial rootlets Part sun growing to 100 feet. Shade

Humulus lupus Golden hop vine Twining stems 5-9 Papery bracts, Sun Vigorous vine. H. lupus is the source of 'Aureus' Summer Part sun commercial hops.

Hydrangea anomala Climbing Climbs 5-9 White, Sun Good on masonry. Flowers are borne in hydrangea by aerial rootlets June Part sun broad, flat clusters.

Lonicera japonica Halls Japanese Twining 5-9 White to Sun Vigorous, semi-evergreen vine. Grows 'Halliana' honeysuckle yellow, Part sun to 20 feet. April-June

Lonicera Yellow flowering Twining 5-9 Yellow, Sun Fragrant flowers are followed by red periclymenum woodbine Summer/fall Part sun berries. Foliage is blue-green with gray underneath.

Parthenocissus Virginia creeper Climbs by 4-9 Insignificant Sun Vigorous vine, valued for red fall color. quinquefolia adhesive tendrils Part sun

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VINES

Botanical name Common name Growth Zone Flowers Exposure Remarks

Parthenocissus Boston ivy Climbs by 5-9 Insignificant Sun Vigorous vine, commonly used on tricuspidata adhesive Part sun masonry walls. Brilliant fall color. tendrils

Passiflora pfordtii Passion vine Tendrils 8-9 Purple-blue, Sun Interesting flower. Summer

Polygonum auberti Silvervine Twining 5-9 White, Sun Vigorous, deciduous vine. Grows to fleeceflower July-Sept Part sun 20-30 feet under adverse soil conditions.

Trachelospermum Star jasmine Vine-like 8-9 White, Sun Twining, vine-like branches to 15 feet. jasminiodes branches Spring Part sun Shiny, leathery leaves, masses of fragrant, star-shaped flowers. Evergreen.

Wisteria floribunda Japanese wisteria Twining 5-9 Violet to Sun Long-lived deciduous vine. May reach violet-blue. Part sun 30 feet or more. Pendant racemes of May-June flowers 20 inches long.

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GLOSSARY

Invasive—Grows vigorously and will out-compete other GLOSSARY plants in the same area; difficult to control Acid soil—Soil with a pH value less than 7 Panicle—A flower cluster whose main stem bears branches Alkaline (non-acid) soil—Soil with a pH value greater of pedicelled flowers; also a branched raceme than 7 Pendulous—More or less hanging or declined Broadleaf evergreen—A non-needled evergreen Persistent—Adhering to a position instead of falling, Deciduous—Losing its leaves annually at the end of the whether dead or alive growing season Raceme—An unbranched flower cluster with several Double-flowered—A flower with more than the usual stalked flowers borne singly along a main stem, the number of petals, colored sepals, or bracts youngest at the tip Exfoliating—Peels off in shreds or thin layers, as in bark Specimen—An individual plant with outstanding charac- from a tree teristics (leaves, flowers, bark), generally used as a focal Floriferous—Producing many flowers point in the landscape Glaucous—Covered with a waxy bloom or whitish mate- Stoloniferous—Bearing slender stems just on or under the rial that rubs off readily ground, which root at the tips Herbaceous—Dying down at the end of the growing Sucker—A shoot that arises from at or below ground level, season, no persistent woody stem above ground directly from the root or rootstock

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INDEX

Berckmanns Oriental...24 ' Atropurpurea'... 20 INDEX Dwarf golden...30 'Crimson Pygmy'. ..16 Emerald green... 34 Berberis verruculosa...20 Arbutus menziesi...43 Bergenia Arbutus unedo...31 Heartleaf.-j; Aaronsbeard...iJ Arctostaphylos uva-ursi...ll Bergenia cordifolia. ..11 Abelia Armeria maritima. ..11 Betula jacquemontii... 43 Edward Goucher.. .25 Artemisia schmidtiana. ..11 Betula nigra...43 Glossy... 25 Ash Betula pendula. ..43 Prostrate glossy...16 Claret... 43 Birch Abelia grandiflora.. .25 European mountain...42 European white...43 'Edward Goucher'...25 Green... 43 Jacquemonti...45 'Prostrata'..J<5 Marshall's seedless...43 River... 43 Acacia Patmore...47 Bittersweet Greenwattle...47 Ray wood... 4 3 American... 49 Acacia decurrens...41 Aucuba Oriental... 49 Acer circinatum. ..31 Japanese... 25 Blacklocust Acerginnala...31, 35 Aucuba japonica... 25 Globe... 40 Acer griseum. ..38 Azalea Purple Robe...45 Acer macrophyllum. ..45 Exbury...22 Blueberry Acer palmatum... 31 Gumpo...i4 Box... 24 'Dissectum'20 Hinodigiri...7

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INDEX

Camellia Chamaecyparis obtusa Cortaderia selloana...26 Common... 26 'Gracilis'...37 Cotinus coggygria...32 Sasanqua...26 'Nana'...20 Cotoneaster Camellia japonica... 26 'Tetragona'...55 Cranberry... 20 Camellia sasanqua...26 Chamaecyparis pisifera Franchet...2<5 Campsis radicans...49 'Nana'...20 Littleleaf...76 Candytuft Chaste tree...34 Pamey...26 Evergreen... 14 Cherry Rock... 7 6 Caragana arborescens...31 Arhanogawa Oriental... 56 Rockspray...7<5 Carpet berry Autumn flowering...40 Cotoneaster dammeri. ..12 Emerald... 14 Columnar Sargent flowering...42 Cotoneaster franchetii. ..26 Carpet bugle...77 Cornelian... 38 Cotoneaster horizontalis. ..16 Carpinus betulus Kwanzan...42 Cotoneaster microphyllus...16 'Fastigiata'...47 Mt. Fuji...36 Cotoneaster microphyllus thymiflius...l6 Catalpa Weeping... 3 7 Cotoneaster pameyi (C. lactea)...26 Common... 41 Whitcomb flowering... 40 Cowberry... 7 5 Western... 45 Chimonanthus fragrans. ..26 Crabapple Catalpa bignonioides...41 Chinese fringe tree...55 Adams flowering...59 Catalpa speciosa.. .45 Chionanthus retusus...35 Adirondack... 36 Ceanothus Choisyatemata...20, 26 Dolgo flowering...41 Blueblossom...57 Cinquefoil Japanese flowering...36 Point Reyes...72 Shrubby... 78 Louisa... 56 Snowbrush...57 Cladrastis kentukea...41 Prairiefire...56 Ceanothus gloriosus. ..12 Clematis Red Jewel...56 Ceanothus thyrsiforus...31 Anemone... 49 Robinson flowering...59 Ceanothus velutinus...31 Armand...49 Sargent... 56 Cedar Edith... 50 Tschonoskii flowering.. .59 Atlas... 47 Jackman...50 Zumi calocarpa...36 Deodar... 47 Lady Betty Balfour...50 Cranberry bush Hoganred...4<5 Mme Andre... 50 Dwarf European. ..79 Japanese... 55 Nelly Moser... 50 Crape myrtle...32 Salt... 34 Niobe...50 Crataegus laevigata Weeping Alaskan.. .38 Royalty... 50 'Crimson Cloud'...38 Cedrus atlantica...47 Sweet autumn.. .49 Crataegus phaenopyrum.. .38 Cedrus deodara...47 The President...50 Crataegus x lavallei.. .38 Celastrus orbiculata...49 Clematis armandii.. .49 Cryptomeria Celastrus scandens...49 Clematis montana.. .49 Dwarf Japanese... 76 Celtis occidentalis...43 Clematis paniculata.. .49 Cryptomeria japonica Ceratostigma wilhnottianum. ..16 Clethra alnifolia...26 'Dwarf'...76 Cercidiphyllum japonicum. ..41 Convallaria majalis. ..12 'Sekkan-sugi'... 55 Cercis canadensis...38 Coralberry Cupressus arizonica Chaenomeles speciosa...26 Indian currant...25 'Blue Pyramid'...55 Chamaecyparis lawsoniana Comus alba...26 Currant 'Oregon blue'...38 Comus canadensis...12 Flowering... 34 Chamaecyparis nootkatensis Comus florida.. .35 'Pendula'...5S Comus kousa... 35 Comus mas...38

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INDEX

Cypress Erica tetralix Forsythia Blue pyramid...55 'George Frazier'...75 Greenstem...27 Dwarf Sawara false... 20 Erica vagans Lynwood...27 False... 35 'Mrs. D.F. Maxwell'...75 Weeping... 52 Lawson false... 38 Escallonia Forsythia suspensa...32 Slender Hinoki false... 31 Appleblossom... 26 Forsythia viridissima...27 Cytisus praecox. ..20 Escallonia x langleyensis...26 Forsythia x intermedia Euonymus 'Lynwood'...27 D Bigleaf wintercreeper... 50 Fraxinus oxycarpa Daboecia cantabrica Gold Prince...27 'Ray wood'... 43 'Alba'... 72 Winged...27 Fraxinus pennsylvanica.. .43 ' Atropurpurea'... 72 Euonymus ala ta... 2 7 'Marshall's seedless'...43 Daphne Euonymus fortunei... 13 'Patmore'...47 February... 27 'Golden Prince'...27 Fuchsia... 7 7 Garland... 7 2 Euonymus fortunei vegetus...50 Fuchsia magellanica...17 Winter... 2 7 Euryops Daphne cneorum...l2 Green leafed...27 Daphne mezereum...21 Euryops pectinatus Gaultheria procumbens. ..13 Daphne odora...21 'Viridis'...27 Gaultheria shallon...21 David viburnum...19 Genista lydia...17 Deutzia Genista pilosa Slender... 7 6 Fagus sylvatica.. .45 'Vancouver Gold'... 75 Deutzia gracilis. ..16 False cypress...55 Germander Dogwood Dwarf Sawara... 20 Chamaedrys...75 Chinese... 55 Lawson... 38 Ginkgo...47 Flowering...55 Slender Hinoki. ..57 Ginkgo biloba...47 Tartarian... 26 Fatsia Gleditsia triacanthos...47 Douglas-fir... 48 Japanese... 2 7 Goldenchain...59 Fatsia japonica. ..27 Goldenrain tree...59 E Fern Gum Elaeagnus ebbingei...32 Western sword... 18 American sweet...48 'Gilt Edge'...26 Fescue Black... 45 Elm Blue... 75 Gymnocladus dioicus...45 Camperdown Scotch...57 Festuca ovina glauca...13 Chinese... 42 Fir H Enkianthus Douglas-... 48 Hackberry Redvein...26 Firethom Common... 43 Enkianthus campanulatus...26 Kasan scarlet...28 Halesia Carolina...38 Erica camea...l2 Laland...55 Hamamelis intermedia 'King George'...72 Lowboy scarlet...78 'Diane'...52 Erica cinerea...12 Flax Hamamelis virginiana...32 Erica darleyensis New Zealand...28 Hawthorn 'Mediterranean white'...75 Fleeceflower Crimson Cloud...58 'Mediterranean pink'... 75 Silvervine...57 Indian... 7 8 Erica terminalis...21 Lavalle...5S Washington... 38

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INDEX

Heath Hydrangea anomala...50 Juniperus squamata. ..14 Bog... 73 Hydrangea macrophylla...21 'Blue Carpet'... 14 Cornish... 75 Hydrangea paniculata 'Blue Star'...77 Corsican...27 'Peegee'...27 'Meyeri'...27 Darley...75 Hydrangea quercifolia...27 Juniperus virginiana Purple bell Irish... 72 Hypericum calycinum... 13 'Skyrocket'...32 Spring... 72 Hypericum moserianum... 14 Twisted... 72 K White bell Irish...72 I Kalmia Heather Iberis sempervirens. ..14 Mountain laurel...27 County Wicklow Scotch...72 Ilex comuta Kalmia latifolia.. .27 Goldleaf Scotch... 72 'Rotunda'... 27 Katsuratree...47 Mrs. H.E. Beale Scotch...76 Ilex crenata Kentucky coffee tree...45 Searle Scotch...76 'Convexa'...77, 27 Kerria Heavenly bamboo...28 Ivy Double Japanese...27 Hedera canariensis... 13 Algerian... 73 Kerria japonica Hedera helix... 13, 50 Boston...57 'Pleniflora'...27 Helianthemum nummularium... 13 English...73, 50 Kinnikinnick... 7 7 Hemlock Kiwi vine...49 Western... 48 Koelreuteria paniculata. ..39 Hibiscus syriacus... 32 J Jasmine Kolkwitzia amabilis...27 Hinoki Dwarf gracilis... 20 Star... 57 Juglans regia...45 L Golden... 35 Juniper Laburnum watereri Holly Armstrong... 27 Chinese... 28 'Vossii'...39 Bar Harbor creeping...14 Convexleaf Japanese...77, 27 Lagerstroemia indica...32 Blue Carpet creeping... 14 Oregon grape...22 Larch Blue Star...77 Rotund Chinese...27 European... 44 Meyer singleseed. ..27 Holodiscus discolor...32 Larix decidua. ..44 Old Gold...77 Honeylocust...47 Laurel Pfitzer...27 Honeysuckle English... 33 Sea Green...27 Portuguese... 33 Halls Japanese...50 Skyrocket... 32 Privet... 7 7 Zabel cherry...22 Tamarix Savin...77 Tatarian...33 Lavandula angustifolia...17 Wintergreen... 32 Hop vine Lavender Juniperus chinensis Golden... 50 English... 7 7 'Juniperus'...27 Hornbeam Lavender cotton... 75 'Old Gold'... 7 7 Pyramidal European...41 Leucodermis 'Pfitzeriana'...27 Horsechestnut.. .43 Bosnia pine...36 'Sea Green'...27 Red...43 Leucothoe Humulus lupus 'Wintergreen'.. .32 Drooping... 27 'Aureus'...50 Juniperus horizontalis Leucothoe fontanesiana. ..21 Hydrangea 'Bar Harbor'... 14 Ligustrum japonicum... 32 Bigleaf...27 Juniperus sabina. ..17 Ligustrum ovalifolium...33 Climbing... 50 'Tamariscifolia'... 7 7 Ligustrum vulgare...33 Oakleafed...27 'Lodense'...22 Peegee panicle. ..27

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INDEX

Lilac Malus Oceanspray...52 Common... 34 'Adams'...59 Oregon grape holly...22 Persian... 30 'Adirondack'... 56 Osmanthus heterophyllus...28 Lily of the valley...12 'Dolgo'...4i Oxydendrum arboreum...39 Linden 'Louisa'... 56 American... 48 'Prairiefire'...56 P Greenspire...42 'Red Jewel'... 56 Pachysandra Littleleaf...46 'Robinson'... 59 Japanese... 14 Lingonberry...75 Malus floribunda.. .36 Pachysandra terminalis... 14 Liquidambar styraciflua. ..48 Malus sargentii...36 Pampas grass...26 Liriodendron tulipifera...48 Malus tschonoskii...39 Parrotia Lithocarpus densifloms...44 Malus x zumi Persian... 59 Lithodora 'Calocarpa'...56 Parrotia persica...39 Grace Ward... 14 Maple... 57 Parthenocissus quinquefolia... 50 Lithodora diffusa Amur... 55 Parthenocissus tricuspidata... 51 'Grace Ward'... 14 Bigleaf...45 Passiflora pfordtii...51 Locust Japanese...20, 31 Passion vine...57 Idaho pink...42 Norway... 45 Pear Lonicera japonica Paperbark...5S Aristocrat... 42 'Halliana'...50 Red.. .47 Peashrub Lonicera periclymenum... 50 Silver... 47 Siberian... 57 Lonicera pileata. ..17 Sugar... 4 7 Periwinkle... 7 5 Lonicera tatarica...33 Vine... 57 Pemettya Metasequoia glyptostroboides...44 Chilean... 7 7 M Mexican orange...20, 26 Pemettya mucronata...l7 Madrone Miscanthus sinensis...28 Philadelphus coronarius...33 Pacific... 43 Mockorange Philadelphus virginalis...33 Strawberry... 31 Sweet... 55 Phlox Magnolia Virginalis...55 Moss... 14 Lily... 28 Myrica califomica...39 Phlox subulata. ..14 Saucer... 56 Myrtle Phormium tenax... 28 Southern... 44 Oregon... 40 Photinia Star...2S, 55 Pacific wax...59 Fraser...55 Magnolia grandiflora...44 Japanese... 55 Magnolia liliiflora...28 N Photinia fraseri... 33 Magnolia soulangiana...36 Nandina...28 Photinia glabra...33 Magnolia stellata... 28, 35 Dwarf...77 Picea abies Mahonia Nandina domestica.. .28 'Nidiformis'...77 Burmese... 28 'Dwarf...77 Picea glauca Cascades... 17 Nyssa sylvatica. ..45 'Conica'...22 Mahonia aquifolium...22 Picea pungens Mahonia lomarifolia...28 0 'Fat Albert'... 55 Mahonia nervosa. ..17 Oak 'Hoopsii'...59 Maidenhair tree...47 Pin... 44 'Koster'...47 Red... 46 Pieris Scarlet... 44 Japanese... 28 Tan...44 Pieris japonica... 28

57 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

INDEX

Pine Prunus serrulate 'Daphnoides'...25 Austrian... 45 ' Amanogawa'... 56 'Dora Amateis'...i8 Columnar white.. .36 'Kwanzan'...42 'Elizabeth'... 25 Dwarf white...22 'Mt. Fuji'... 36 'Gumpo'...74 Eastern white...45 Prunus subhirtella 'Hinodigiri'...78 Japanese umbrella.. .42 'Autumnalis Rosea'...40 'Jean Marie de Montague'...25 Mugo Swiss mountain...22 'Pendula Plena Rosea'...57 'Lavender Girl'... 55 Ponderosa...4S 'Whitcomb'...40 'Lees Scarlet'...29 Shore... 59 Pseudotsuga menziesi...48 'Lens Monarch'...29 Pinus contorta...39 Punica granatum. ..28 'Macrantha'...7S Pinus heldreichii...36 'Nana'...22 'MardiGras'...7S Pinus mugo mugo.. .22 Pussy willow...34 'Mars'... 25 Pinus nigra...45 Pyracantha coccinea 'Mist Maiden',..25 Pinus ponderosa.. .48 'Kasan'...2S 'Moonstone'... 78 Pinus strobus...45 'Lalandei'...55 'Mrs. Fumivair...29 'Fastigiata'...56 'Lowboy'... 18 'Odee Wright*... 25 'Nana'...22 Pyrus calleryana 'Old Copper'...29 Plum 'Aristocrat'... 42 'PJM'...25 Blireiana...59 'Purple Splendour'...29 Thundercloud... 59 'Ramapo'...74 Plumbago Quercus coccinea...44 'Sappho'. ..34 Chinese... 16 Quercus palustris. ..44 'Scarlet Wonder'... 78 Polygonum auberti. ..51 Quercus rubra...46 'Shamrock'... 7 9 Polystichum munitum...18 Quince 'Taurus'... 34 Pomegranate... 28 Howering...2(5 'Trade Webster'...34 Dwarf... 22 'Vulcan'...29 Poplar 'Yaku Princess'...25 R Lombardy...46 Rhododendron augustinii Raphiolepis , Populus nigra Augustinii'...28 Roundleaf...22 'Lombardy'...46 Rhododendron impeditum...l4 Raphiolepis indica...l8 Potentilla fruticosa. ..18 Rhosmarinus officinalis...19 Raphiolepis umbellata...22 Privet Rhus typhina...34 Redbud California... 55 'Laciniata'...29 Eastern... 58 Common... 55 Ribes sanguineum...34 Japanese... 52 Redwood Robinia ambigua Dawn... 44 Lodense...22. Tdahoensis'...42 Rhamnus frangula... 3 7 Prunus blireiana...39 Robinia pseudoacacia Rhododendron...18, 22, 29 , Prunus cerasifera 'Inermis ...40 'Anah Kruschke'...2S 'Thundercloud'... 59 'Purple Robe'... 44 'Anna Rose Whitney'...55 Prunus cistena...33 Rockspirea 'Blaney's Blue'...22 Prunus laurocerasus...33 Creambush...52 'Blue Diamond'... 28 'Zabeliana'...22 Rosa 'Blue Peter'...22 Prunus lusitanica...33 'Flower Carpet'... 14 Prunus sargentii 'Bowbells'...22 Rosa rugosa...23 'Column aris'.. .42 'Cloudland'...74 Rose 'Crater Lake'...29 Rugosa...25 'Cream Crest'... 18 Rose of Sharon...52

58 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

INDEX

Rosemary... 19 Spirea Thuja orientalis Dwarf bog... 11 Bridal wreath... 29 'AureaNana'...50 Rubus pentalobus... 14 Goldflame...79 'Berckmanns' ...24 Thunberg...2J Thuja plicata s Vanhoutte...29 'Fastigiata'...4S Salal...27 Spruce Thyme Salix caprea Dwarf Alberta... 22 Wooly...75 'Pendula\..54 Fat Albert Colorado... 33 Thymus pseudolanuginosus. ..15 Salix purpurea.. .29 Hoops blue...39 Tilia americana...48 Sandcherry Koster blue Colorado...41 Tiliacordata...46 Purpleleaf...55 Nest Norway...77 'Greenspire'...42 Santolina chamaecyparissus...l5 St. Johnswort...75, 14 Trachelospermum jasminiodes... 51 Sarcococca Stewartia Trumpet vine...49 Fragrant... 23 Japanese... 42 Tsuga heterophylla. ..48 Sweet box...75 Stewartia pseudocamellia. ..42 Tulip tree...48 Sarcococca hookeriana humilis...l5 Stranvaesia Sarcococca ruscifolia...23 Chinese... 30 u Saxifraga cordifolia. ..11 Stranvaesia davidiana.. .30 Ulmus glabra Sciadopitys verticillata...42 Strawberry 'Camperdownii'... 37 Sea pink... 11 Barren... 75 Ulmus parivfolia. ..42 Serviceberry Sty rax japonicus. ..40 Umbellularia califomica...40 Autumn Brilliance...38 Sumac Saskatoon... 57 Cutleaf staghom.. .29 Staghom...54 Silktree Vaccinium ovatum...24 Summersweet... 26 Pink... 41 Vaccinium vitis-idaea... 15 SilverbelL.JS Sunrose...73 Sweetgum Viburnum... 79 Silverberry Burkwood...50 Ebbinge's...J2 American... 48 Sweetshrub...25 Doublefilc.JO Gilt Edge...26 Korean Spice...24 Symphoricarpos albus. ..19 Silvergrass...2(S Leatherleaf...54 Symphoricarpos orbiculatus.. .23 Silvermound...77 Snowball... 30 Skimmia Syringa persica... 30 Syringa vulgaris...34 Spring Bouquet...30 Dwarf... 79 Wayfaring tree...34 Japanese... 2 3 Viburnum burkwoodii...30 Skimmia japonica... 23 Viburnum carlesii...24 'Dwarf'...79 Tamarix parviflora... 34 Viburnum davidii...l9 Smoketree...32 Tanoak...44 Viburnum lantana...34 Snowbell Taxus baccata Viburnum opulus Japanese... 40 'Fastigiata'...57 'Nanum'...79 Snowberry...79 'Repandens'...79 'Sterile'... 30 Sorbus aucuparia...42 Taxus cuspidata Viburnum plicatum tomentosum...30 Sourwood...39 'Nana'...24 Viburnum rhytidophyllum...34 Spiraea bumalda Taxus media Viburnum tinus 'Goldflame'...79 'Brownii'...50 'Spring Bouquet'... 30 Spiraea prunifolia... 29 Teucrium chamaedrys...l5 Vinca minor... 15 Spiraea thunbergii...23 Thuja occidentalis...34 Virginia creeper... 50 Spiraea x vanhouttei.. .29 Vitex agnus-castus...34

59 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

INDEX

W Winters weet... 26 Yew Waldsteinia fragarioides. ..15 Wisteria Browns... 30 Walnut Japanese... 57 Dwarf Japanese... 24 English... 45 Wisteria floribunda.. .51 English... 79 Persian... 45 Witchhazel Irish...37 Weigela Common... 32 Yucca Old-fashioned... 30 Diane hybrid...32 Adams needle...79 Weigela florida... 30 Woodbine Yucca filamentosa. ..19 Willow Yellow flowering.. .50 Purple Osier...29 1 Weeping pussy...34 Y Zelkova Wintercreeper Yellowwood Green Vase...46 Purpleleaf...i5 American... 41 Zelkova serrata Wintergreen...i5 'Village Green' ...46

60 Archival Copy. This information is out of date. For current information, see the OSU Extension Catalog:https://catalog.extension.oregonstate.edu

© 1999 Oregon State University Prepared by Ray A. McNeilan, Extension agent emeritus; and Ann Marie VanDerZanden, assistant professor of horticulture and Extension Master Gardener state coordinator; Oregon State University. This publication replaces PNW 185, written by Donald J. Martel, professor emeritus of landscape architecture, and George N. Fredeen, former associate professor of landscape architecture; Oregon State University. The following illustrations are by Gary Whitley, Pacific Power: honeylocust (p. 9), staghom sumac (pp. 25- 30), amur maple (pp. 31-34), European mountain ash (pp. 41-42), littleleaf linden (pp. 45-46), sweet gum (pp. 47-48). Pacific Northwest Extension publications are jointly produced by the three Pacific Northwest states—Oregon, Washington, and Idaho. Similar crops, climate, and topography create a natural geographic unit that crosses state lines. Since 1949 the PNW program has published more than 500 titles. Joint writing, editing, and production have prevented duplication of effort, broadened the availability of faculty specialists, and substantially reduced the costs for participating states. Published and distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914, by the Oregon State University Exten- sion Service, Washington State University Cooperative Extension, the University of Idaho Cooperative Extension System, and the U.S. Department of Agriculture cooperating. The three participating Extension Services offer educational programs, activities, and materials—without regard to race, color, religion, sex, sexual orientation, national origin, age, marital status, disability, and disabled veteran or Vietnam-era veteran status— as required by Title VI of the Civil Rights Act of 1964, Title IX of the Education Amendments of 1972, and Section 504 of the Rehabilitation Act of 1973. The Oregon State University Extension Service, Washington State University Cooperative Extension, and the University of Idaho Cooperative Extension System are Equal Opportunity Employers. $2.50 Published January 1999.