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Right Tree in the Right Place the First Time

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Right Tree in the Right Place the First Time City of Lake Oswego Right Tree Rightin the Place Contents Benefits of Trees . 3 Selecting a Tree . .4 . Planting Distances from Power Lines . 5 . Recommended Tree Species: . for 2'—4' wide planting spaces. .6 . for 4'—6' wide planting spaces . 8 for 6'—8' wide planting spaces. .12 . for 8'—10' wide planting spaces . 16 . for 10' wide + planting spaces. .18 . Proper Planting and Care . .22 . Avoiding Problems. 24 . Resources . 25 Benefits Of Trees rees improve the appearance and quality of life in Lake Oswego’s neighborhoods. But did you know they also help reduce stormwater runoff, filter pollutants, add Toxygen to the air we breathe, and decrease glare from roadways? For example, Lake Oswego’s street tree canopy (representing 13% of the total 44% citywide tree canopy cover) intercepts about 50 Olympic-size swimming pools worth of rainfall annually based on data compiled in the City’s 2009 State of the Urban Forest Report. Conserving existing trees and planting new trees help reduce the size and cost of hard infrastructure that is otherwise necessary for stormwater management. 3 Selecting A Tree Before selecting a tree to plant, a number of factors should be considered to ensure that an optimum species is chosen based on the site conditions of the available growing space. Choosing the right tree for the right place is a decision that will have an impact on the neighborhood for decades to come. Answering these questions can help you select the most suitable and desirable tree species for your site: 1. What is the size of the available growing space? 2. What size (small, medium, or large mature height and spread) and form (crown shape) of tree will best fit the space provided? 3. Are there overhead or underground utility lines, sidewalks, driveways, courtyards, sports courts, or building foundations in the vicinity? 4. Does the site receive full sun, full shade, or part sun and part shade throughout the day? 5. Is the soil deep, fertile, and well drained, or is it shallow, compacted, and infertile? 6. Do you have time to water and prune the newly planted tree until it is established, or will you be relying on a garden or tree service for assistance? 7. Is the site exposed to frequent winds? 8. Are there other trees in the vicinity? 9. Do you want the tree to provide shade or seasonal color, attract wildlife, or act as a screen? 10. Do you have a preference for evergreen trees or deciduous trees that lose their leaves? Need Advice? Unsure about the answers to any of these questions? Contact your local garden center, a consulting arborist, or a landscape architect. Receiving assistance from a professional before making a decision will save you time and money by planting the right tree in the right place the first time. This guidebook will help you narrow down your options for choosing the right tree in the right place. The recommended trees are just a sample of what may be available. See page 25 for a list of resources to help you learn more about each species, and visit your local nursery before making a final decision. 4 Planting Distances From Power Lines Tall Zone Medium Zone Short Zone 50' or more from 25'– 50' from Less than 25' from power lines power lines power lines No height limit Mature tree heights Mature tree heights less than 50' 25' or less 50' high 25' high 5 2' – 4' Wide Planting Spaces Recommended Species Mature Mature Mature Common Name Species Name Shape Size Height Spread Soil Type Sun ‡ Remarks DECIDUOUS TREES Amur Maple Acer ginnala S 20' 20' all ‡ Very hardy, fall color, attracts wildlife Flame Maple Acer ginnala 'Flame' S 20' 20' all ‡ Fall color, early to leaf out in spring, fragrant flowers Rocky Mountain Glow Maple Acer grandidentatum 'Schmidt' S 25' 15' well drained ‡ Great fall color Paperbark Maple Acer griseum S 20 20 all ‡ Attractive peeling bark, red or multi-colored in fall Japanese Maple Acer palmatum S 12' 6' all ‡ Fall color, many varieties such as 'Butterfly' and 'Sango Kaku' Roughbark Maple Acer triflorum S 20' 20' loam or sand ‡ Fall color, textured bark Frans Fontaine Hornbeam Carpinus betulus 'Frans Fontaine' S 35' 15' all Narrowest of the Carpinus b. cultivars Cornelian Cherry Dogwood Cornus mas S 20' 20' clay or loam ‡ Gold or red in fall, resistant to Verticillium Eddies White Wonder Dogwood Cornus nuttalli x cornus florida S 25' 20' all ‡ Hybrid of the native dogwood generally more resistant to anthracnose Grace Smoketree Cotinus coggygria x obovatus 'Grace' S 20' 15' all ‡ Outstanding summer and fall color American Smoketree Cotinus obovatus S 30' 30' all Tolerant of hot and dry sites, attractive fall color, purple flower clusters Black Hawthorn Crataegus douglasii S 25' 15' all ‡ Showy flower, conspicuous thorns, attracts wildlife Crimson Cloud Hawthorn Crataegus laevigata 'Crimson Cloud' S 25' 18' all ‡ Thorny branches, red flower, red fruit Wedding Bells Silverbell Halesia carolina 'Wedding Bells' S 20' 15' all ‡ White bell-shaped flowers, yellow fall foliage Columnar Goldenchain Laburnum anagyroides 'Columnaris' S 20' 10' moist ‡ Narrow upright crown, dense clusters of bright yellow flowers in spring Adirondack Crabapple Malus 'Adirdondack' S 18' 10' all ‡ Compact dense crown with many white flowers Purple Prince Crabapple Malus 'Purple Prince' S 20' 20' all ‡ Purple bronze foliage, rose red flower Red Barron Crabapple Malus 'Red Barron' S 18' 8' all ‡ Narrow ascending branch structure, purple-green foliage, dark red flower Golden Raindrops Crabapple Malus 'Schmidtcutleaf' S 20' 15' all ‡ Unique leaves, white flowers, small golden yellow fruit Prariefire Crabapple Malus spp. 'Prariefire' S 20' 20' all ‡ Disease resistant, attracts wildlife Tschonoskii Crabapple Malus tschonoskii S 30' 15' all Bright orange fall color, pink flower, attracts wildlife Chinese Pistache Pistachia chinensis S 25' 25' all ‡ Impressive red-orange fall color, attracts wildlife Beauty Plum Semi-Dwarf Prunus salicinia 'Beauty' S 15' 15' all ‡ Large fruit early summer, needs regular pruning Amanogawa Cherry Prunus serrulata 'Amanogawa' S 20' 6' all ‡ Very narrow and upright structure, pale pink spring flowers Big Cis Plum Prunus x cistena 'Schmidtcis' S 14' 12' all ‡ Light pink and very fragrant spring flowers, dark purple foliage Spire Cherry Prunus x hilleri S 30' 10' all ‡ Very narrow upright structure, orange-red fall color, pink flowers in spring Japanese Stewartia Stewartia pseudocamellia S 30' 25' well drained Needs ample water, striking bark, vibrant red fall color Japanese Snowbell Stryax japonicus S 25' 25' well drained ‡ White flowers hang down from branches, fruit hangs on into fall Snowcone Japanese Snowbell Styrax japonicus 'JFS-D' S 20' 20' well drained ‡ Pendulous white flowers, water weekly for first three summers Ivory Silk Japanese Tree Lilac Syringa reticulata 'Ivory Silk' S 20' 15' well drained ‡ Showy, creamy white flowers, attracts wildlife Summer Sprite Linden Tilia cordata 'Halka' S 20' 15' all ‡ Dense compact crown, sheared appearance, yellow fall color 6 Full Sun ‡ = OK to plant under overhead utility lines Part Sun, Part Shade Full Shade = Not OK to plant under overhead utility lines Mature Mature Mature Common Name Species Name Shape Size Height Spread Soil Type Sun ‡ Remarks DECIDUOUS TREES Amur Maple Acer ginnala S 20' 20' all ‡ Very hardy, fall color, attracts wildlife Flame Maple Acer ginnala 'Flame' S 20' 20' all ‡ Fall color, early to leaf out in spring, fragrant flowers Rocky Mountain Glow Maple Acer grandidentatum 'Schmidt' S 25' 15' well drained ‡ Great fall color Paperbark Maple Acer griseum S 20 20 all ‡ Attractive peeling bark, red or multi-colored in fall Japanese Maple Acer palmatum S 12' 6' all ‡ Fall color, many varieties such as 'Butterfly' and 'Sango Kaku' Roughbark Maple Acer triflorum S 20' 20' loam or sand ‡ Fall color, textured bark Frans Fontaine Hornbeam Carpinus betulus 'Frans Fontaine' S 35' 15' all Narrowest of the Carpinus b. cultivars Cornelian Cherry Dogwood Cornus mas S 20' 20' clay or loam ‡ Gold or red in fall, resistant to Verticillium Eddies White Wonder Dogwood Cornus nuttalli x cornus florida S 25' 20' all ‡ Hybrid of the native dogwood generally more resistant to anthracnose Grace Smoketree Cotinus coggygria x obovatus 'Grace' S 20' 15' all ‡ Outstanding summer and fall color American Smoketree Cotinus obovatus S 30' 30' all Tolerant of hot and dry sites, attractive fall color, purple flower clusters Black Hawthorn Crataegus douglasii S 25' 15' all ‡ Showy flower, conspicuous thorns, attracts wildlife Crimson Cloud Hawthorn Crataegus laevigata 'Crimson Cloud' S 25' 18' all ‡ Thorny branches, red flower, red fruit Wedding Bells Silverbell Halesia carolina 'Wedding Bells' S 20' 15' all ‡ White bell-shaped flowers, yellow fall foliage Columnar Goldenchain Laburnum anagyroides 'Columnaris' S 20' 10' moist ‡ Narrow upright crown, dense clusters of bright yellow flowers in spring Adirondack Crabapple Malus 'Adirdondack' S 18' 10' all ‡ Compact dense crown with many white flowers Purple Prince Crabapple Malus 'Purple Prince' S 20' 20' all ‡ Purple bronze foliage, rose red flower Red Barron Crabapple Malus 'Red Barron' S 18' 8' all ‡ Narrow ascending branch structure, purple-green foliage, dark red flower Golden Raindrops Crabapple Malus 'Schmidtcutleaf' S 20' 15' all ‡ Unique leaves, white flowers, small golden yellow fruit Prariefire Crabapple Malus spp. 'Prariefire' S 20' 20' all ‡ Disease resistant, attracts wildlife Tschonoskii Crabapple Malus tschonoskii S 30' 15' all Bright orange fall color, pink flower, attracts wildlife
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