CITY OF TUKWILA APPROVED TREE LIST

2017 NOTES GRAPHICS KEY

• Substitute species may be considered upon request. Indicates a columnar or fastigiated species of variety that is Review and approval by City staff will be required. * not preferred unless site constraints require a narrow canopy.

• Canopy cover figures are estimates of aerial shade Indicates a tree that will do well in a location that receives after 30 years of growth. at least 6 hours of direct sun a day.

Indicates a tree that will do well in a location that receives 4–6 hours of direct sun a day, or is shaded by other plants or buildings for part of the day. Indicates a tree that will do well in a location that receives less than 4 hours of direct sunlight a day, or is shaded by or an of understory to other trees.

Indicates a tree that will require regular irrigation and moist soil throughout its lifetime for best performance.

CITY OF TUKWILA Department of Community Development Indicates general fall foliage color.

Indicates general flower color. 1/5 LARGE STREET TREES Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Acer freemanii Fast-growing; dense, var. ‘Autumn Blaze’ 50’ 40’ 1,257 6’ oval crown; Autumn Blaze Maple excellent autumn colors

* Acer nigrum var. ‘Green Column’ Similar to A. saccharum, 65’ 25’ 491 6’ but more resistant to Green Column heat and drought Sugar Maple

Acer rubrum Red twigs and branchlets; 60’ 40’ 1,257 6’ does not tolerate Red Maple excessive pollution

Acer pseudoplatanus Autumn color dependent on 40’ 40’ 1,257 6’ Sycamore Maple variant; moderate growth rate

Acer saccharum Fast growing; stout branches var. 'Bonfire' 50’ 40’ 1,257 6’ form a dense canopy Bonfire Sugar Maple

Acer saccharum 'Commemoration' Fast growing; stout branches 50' 35’ 962 6’ Commemoration form a dense canopy Sugar Maple

Acer saccharum Fast growing; stout branches 'Green Mountain' 45' 35’ 962 6’ form a dense canopy; Mountain Sugar Maple tolerant of heat and drought

City of Tukwila Approved Tree List 3 LARGE STREET TREES 2/5 Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Spring Aesculus x carnea Crimson spring-time blossoms; rounded crown var. ‘Briotti’ 40’ 30’ 707 6’ with dark green leaves; Red Horse-chestnut mature trees cast dense shade

Pyramidal in shape; heart Cercidiphyllum shaped leaves; to enhance japonicum 40’ 25’ 491 6’ fall color, water less in the late Katsura summer months; leaves smell like brown sugar in the fall

Fraxinus americana Fast-growing; 80’ 35’ 962 6’ useful as a shade tree; Autumn Applause Ash oval-shaped crown

Fraxinus latifolia 60’ 35’ 962 6’ Tolerant of wet conditions Oregon Ash

Fraxinus pennsylvanica Compact, oval crown; 'Patmore' 45’ 35’ 962 6’ dense; strong resistance to disease and pests Patmore Ash

Fraxinus pennsylvanica 'Urbanite' 50’ 40’ 1,257 6’ Pyramidal in shape; dense Urbanite Ash

* Gingko biloba Pollution and heat tolerant; 'Princeton Sentry' pyramidal in shape; autumn 40 15’ 177 6’ Princeton Sentry leaves fall to form a beautiful Gingko groundcover blanket 4 City of Tukwila Approved Tree List 3/5 LARGE STREET TREES Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color * Pollution and heat tolerant; Gingko biloba upright and narrow in shape; ‘Magyar’ 50’ 25’ 491 6’ autumn leaves fall Magyar Gingko to form a beautiful groundcover blanket

Gleditsia triacanthos Thornless variety; green, fernlike leaves; tolerant of inermis 50’ 35’ 962 8’ acidic soils, salt, drought, cold, Honeylocust heat, wind, and pollution

Spring Liriodendron Fast-growing; straight trunk tulipifera 60’ 35’ 962 8’ with pyramidal crown; thrives Tulip Tree in rich, well-drained soil

Liquidambar Requires a large planting styraciflua strip; mixed autumn color 60’ 30’ 707 8’ var. ‘Rotundiloba’ of purple, yellow and red; Fruitless Gum Tree resistant to oak root fungus

* Crooked branches with Nyssa sylvatica a reddish bark; produces 50’ 20’’ 314 6’ Tupelo excellent shade; tolerant of poor draining soils

Quercus coccinea Pyramidal when young, 60’ 40’ 1,257 6’ but round when mature; Scarlet Oak gray-brown bark

Quercus frainetto Fast-growing; dark gray bark; 50’ 30’ 707 6’ glossy deep green leaves; Italian Oak symmetrical

City of Tukwila Approved Tree List 5 LARGE STREET TREES 4/5 Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Quercus garryana Gray, scaly bark; leathery and 50’ 40’ 1,257 8’ Oregon Oak glossy green leaves

Quercus imbricaria Grows roughly 1’ per year; gray 50’ 40’ 1,257 6’ Shingle Oak brown bark; lance-shaped leaves

Quercus macrocarpa Flaky, grayish brown bark; 60’ 40’ 1,257 8’ Bur Oak acorns have a fringed cap

Quercus phellos Pyramidal in shape; 50’ 35’ 962 6’ Willow Oak smooth gray bark

No significant fall color; Quercus robur fast growing tree; 60’ 40’ 1,257 8’ English Oak short trunk with wide, sprawling crown

Quercus rubra Fast-growing; round canopy; 60’ 45’ 1,590 8’ requires fertile soil and Red Oak regular moisture

Pyramidal when young, grows Quercus shumardii to a open crown in maturity; 60’ 40’ 1,257 6’ similar in appearance Shumard Oak to the Scarlet Oak; tolerates most soil conditions 6 City of Tukwila Approved Tree List 5/5 LARGE STREET TREES Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Tolerant of many soils; Quercus velutina acorns have a fringed cap; 55’ 45’ 1,590 8’ Black Oak black bark in maturity that produces a yellow dye

Late Tilia americana Spring var. ‘Redmond’ Straight-trunked tree with a 50’ 30’ 707 8’ narrow crown Redmond Linden

Tilia tomentosa var. ‘Sashazam’ Light green leaves that are 50’ 30’ 707 8’ silvery on the underside; Satin Shadow tolerant of heat and drought Silver Linden

Late Weeping branches; Spring Tilia petiolaris dark green leaves have a 60’ 40’ 1,257 6’ fuzzy underside that give the Pendant Silver Linden tree a silvery appearance in the wind

Zelkova serrata Attractive bark; tolerant of 'Greenvase' 45’ 40’ 1,257 6’ drought and wind; good Green Vase Zelkova shade tree; vase-shaped

Zelkova serrata Attractive bark; tolerant of 'Village Green' 45’ 40’ 1,257 6’ drought and wind; good Village Green Zelkova shade tree; vase-shaped

City of Tukwila Approved Tree List 7 MEDIUM STREET TREES 1/5 Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Dense, rounded crown; Acer campestre many cultivars of 30’ 30’ 707 5’ Hedge Maple similar growth; grows well in the Pacific Northwest

* Acer rubrum Fast-growing, tolerates most soils; var. ‘Bowhall’ 45’ 20’ 314 6’ performs best in native, Bowhall Maple low-traffic areas

Acer rubrum Fast-growing, tolerates most var. ‘Doric’ 45’ 40’ 1,257 6’ soils; performs best in native, Doric Maple low-traffic areas

Acer truncatum x A. platanoides Fast-growing; 40’ 25’ 491 5’ tolerant of heat and drought; ‘Warrens Red’ dark green, glossy leaves Pacific Sunset Maple

Betula albosinensis Flaking orange to var. septentrionalis 40’ 35’ 962 5’ orange-brown bark Chinese Red Birch

Betula papyfera 50’ 25’ 491 6’ Attractive, creamy-white bark Paper Birch

Attractive, smooth Carpinus caroliniana blue-gray bark; can be 30’ 25’ 491 5’ American Hornbeam single- or multi-trunked; excellent fall color

8 City of Tukwila Approved Tree List 2/5 MEDIUM STREET TREES Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color Late Spring Gray bark; beautiful fall color; Cladrastis kentukea deep rooting, so it is possible 40’ 40’ 1,257 5’ Yellow wood to plant beneath the tree; needs regular pruning

Spring Cornus controversa Fast-growing; picturesque 'June Snow' 40’ 40’ 1,257 5’ branches; full sun is Giant Dogwood necessary for best bloom

Mid- Cornus Spring florida x nuttallii Clusters of bright white 30’ 20’ 314 5’ Eddie's White Wonder flowers in mid-spring Dogwood

Shrub-like, vase-like shape; Corylus cornuta needs adequate space 25’ 30’ 707 5’ Beaked Hazelnut to grow; catkins add winter interest

Spring Crataegus crus-galli Smooth, glossy green leaves; var. ‘Inermis’ clusters of white flowers in 30’ 30’ 707 5’ Thornless Cockspur the spring months; tiny fruits Hawthorne attractive to bees and birds

Spring Crataegus x lavalii Dark green leathery leaves; 25’ 20’ 314 5’ clusters of red fruits add Lavalle Hawthorne winter color

* Fagus sylvatica Cone-like shape; smooth gray bark; var. ‘Dawyck Purple’ 35’ 12’ 114 6’ no underplantings; Beech Tree not for high pedestrian areas

City of Tukwila Approved Tree List 9 MEDIUM STREET TREES 3/5 Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Fagus sylvatica No underplantings; not for high pedestrian areas; var. ‘Rohanii’ 50’ 30’ 707 6’ tolerant of tough urban Cutleaf Purple Beech conditions

Gingko biloba Pollution and heat tolerant; pyramidal in shape; autumn Autumn Gold' 45’ 35’ 962 6’ leaves fall to form a beautiful Autumn Gold Gingko groundcover blanket

Spring Halesia monticola Bell-shaped flowers; 45’ 30’ 707 5’ attractive when planted Mountain Silverbell with rhododendrons

Summer Magnolia grandiflora thru Fall Evergreen; broad, dark green leaves; var. ‘Victoria’ 20’ 15’ 177 5’ large white, fragrant flowers; Southern Magnolia unpredictable in form

Mid- Magnolia x kewensis Spring var. ‘Wada’s Memory’ Deciduous; new leaves 30’ 20’ 314 5’ are copper in color; Wada’s Memory casts dense shade Magnolia

* Summer Oxydendrum Pyramidal shape; arboreum 30’ 15’ 177 5’ fragrant summer flowers; Sourwood requires well-drained soils

Spring Prunus cerasifera Dense, upright crown; blooms best and retains purple-leafed var. ‘Krauter Vesuvius’ 30’ 20’ 314 5’ color in full sun; tolerant of Cherry Plum moist well-drained soils

10 City of Tukwila Approved Tree List 4/5 MEDIUM STREET TREES Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color Early Spring Pyrus calleryana Horizontal branching pattern; 45’ 40’ 1,257 5’ Ornamental Pear fall color depends on variant

Quercus ilex Evergreen; 40’ 30’ 707 5’ dense, rounded crown; Holly Oak tolerant of salt air

Rhamnus purshiana Smooth gray bark; 20’ 20’ 314 5’ picturesque branches; Cascara dark green leaves

Summer Sophora japonica Fast-growing; dark green 'Regent' 45’ 40’ 1,257 6’ leaflets; tolerant of urban Japanese Pagoda Tree conditions; great shade tree

Sorbus aucuparis Spring 'Mitchred' 40’ 30’ 707 5’ Dense oval-to-round crown Cardinal Royal Mountain Ash

Spring Sorbus x hybridia Oakleaf Royal 30’ 20’ 314 5’ Blue-green foliage Mountain Ash

Late Spring Slender trunk; Styrax japonicus strong horizontal branches; 30’ 30’ 707 5’ Japanese Snowbell beautiful flowers; disease resistant

City of Tukwila Approved Tree List 11 MEDIUM STREET TREES 5/5 Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color Late Tilia cordata Spring Very tolerant of urban conditions; ‘Chancole’ 40’ 20’ 314 6’ excellent shade tree when Chancelor Linden given room to grow

Late Tilia cordata Spring Very tolerant of ‘Degroot’ urban conditions; 40’ 20’ 314 5’ Degroot excellent shade tree when Littleleaf Linden given room to grow

Ulmus parvifolia Fast-growing; long, weeping branches; 'Emer I' 35’ 35’ 962 5’ excellent street tree or Athena Classic Elm screening tree

Ulmus parvifolia Long, weeping branches; ‘Emer II’ 45’ 40’ 1,257 5’ excellent street tree Allee Elm or screening tree

12 City of Tukwila Approved Tree List 1/4 SMALL STREET TREES Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color Round crown with Acer buergeranum glossy green leaves; 25’ 25’ 491 5’ low and spreading growth; Trident Maple stake and prune to make tree branch high

Spring Acer circinatum Small, nearly symmetrical 25’ 20’ 314 5’ tree; multiple trunks; Vine Maple not for harsh sites

Acer grandidentum var. ‘Schmidt’ Very hardy tree; 25’ 15’ 177 5’ tolerant of most soil Rocky Mountain conditions; oval crown Glow Maple

Acer ginnala Showy, red-twigged seeds 25’ 25’ 491 5’ Amur Maple in the summer months

Acer miyabei Fast-growing; var. 'Morton' 30’ 25’ 491 6’ attractive autumn color State Street Maple

Fast-growing; the most Acer palmatum delicate of maple trees; many 20’ 20’ 314 5’ branches; young spring Japanese Maple foliage is red, turning to green in the summer; fall colors vary

Acer triflorum Multi-season interest; 25’ 20’ 314 5’ beautiful autumn color; Three-Flower Maple tan bark

City of Tukwila Approved Tree List 13 SMALL STREET TREES 2/4 Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color Early Amelanchier Spring Strong stems; grandiflora blue-green foliage; 20’ 15’ 177 4’ Autumn Brilliance drooping clusters Serviceberry of white flowers

Spring The fastest growing redbud; Cercis canadensis horizontally-tiered branches; 30’ 25’ 491 5’ Eastern Redbud needs adequately drained soils

Late Cornus mas Winter The earliest dogwood to Cornelian Cherry 20’ 20’ 314 5’ bloom; gray and tan bark Dogwood provides winter interest

Spring- Cornus rutgersensis Summer Disease resistant hybrid var. ‘Aurora’ of C. florida and C. kousa; 20’ 20’ 314 5’ Aurora Stellar single trunked; Dogwood beautiful autumn color

Spring- Cornus rutgersensis Summer Disease resistant hybrid var. ‘Celestial’ of C. florida and C. kousa; 20’ 20’ 314 5’ Celestial Stellar single trunked; Dogwood beautiful autumn color

Spring- Cornus rutgersensis Summer Disease resistant hybrid of C. florida and C. kousa; var. ‘Stellar Pink’ 20’ 20’ 314 5’ single trunked; Stellar Pink Dogwood beautiful autumn color

Spring Unusual and colorful; Cotinus obovatus excellent screening tree; 25’ 25’ 491 5’ American Smoke Tree blue-green foliage; great fall color

14 City of Tukwila Approved Tree List 3/4 SMALL STREET TREES Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Spring Crataegus Open limb structure; phaenopyrum 25’ 20’ 314 5’ shiny red winter fruits; Washington Hawthorn thorns

Fall color depends on Lagerstoemia hybrids species, typically yellow, red, 20’ 20’ 314 5’ Summer Crape Myrtle or orange; showy summer flowers

Winter Hamamelis mollis Round, dark green leaves; 20’ 20’ 314 5’ fragrant winter flowers; Chinese Witch Hazel shrub-like habit

Mid- Koelreuteria Summer Tolerant of urban conditions; paniculata 25’ 25’ 491 5’ open branches provide shade Goldenrain Tree

Spring Magnolia 'Galaxy' Fast-growing; conical shape; 25’ 25’ 491 5’ Galaxy Magnolia showy flowers

Magnolia grandiflora Spring Evergreen; var. ‘Little Gem’ branches to the ground; 20’ 15’ 177 5’ less hardy than other Dwarf Southern Magnolia species; Magnolia slow growing

Spring Magnolia x loebneri Deciduous; blooms appear 15’ 15’ 177 5’ Loebner Magnolia before leaves in the spring

City of Tukwila Approved Tree List 15 SMALL STREET TREES 4/4 Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Malus Spring Disease resistant; tolerant var. ‘Golden Raindrops’ of many soil types; elegant, 20’ 15’ 177 5’ Golden Raindrops horizontally spreading limbs; Crabapple fruit persists into winter

* Spring Malus var. ‘Lancelot’ Beautiful spring-time white 8’ 8’ 50 5’ flowers; golden fruit in the Lancelot Crabapple autumn months

Early Spring Parrotia persica Smooth gray bark with 30’ 20’ 314 5’ white patches; Persian Parrotia colorful tree year-round

Early Prunus yedoensis Spring var. 'Akebono' Most common cherry tree 25’ 25’ 491 6’ in the Pacific Northwest; Akebono disease resistant Flowering Cherry

* Sorbus americana Spring var. ‘Dwarfcrown’ Very hardy and tolerant of 16’ 8’ 50 5’ wet soils; compact growth; Red Cascade orange red fruits Mountain Ash

Spring Styrax obassia Oval-to-round crown; 25’ 20’ 314 5’ Fragrant Snowbell flowers in drooping clusters

Late Spring Can be grown as a shrub Syringa reticulata or single stemmed tree; 30’ 20’ 314 5’ Japanese Tree Lilac useful as a small shade tree; smooth red bark

16 City of Tukwila Approved Tree List 1/2 CONIFERS FOR SPECIAL SITES Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color * Produces a sweet fragrance Calocedrus decurrens in the summer; California Incense 60’ 30’ 707 10’ can grow up to 2’ per year Cedar once established; columnar form; pollution tolerant

Fast growing tree; Cedrus deodara branches to ground, with 80’ 40’ 1,257 10’ bottom branches sweeping Deodar Cedar upward; many cultivars with a variety of needle colors

Deciduous conifer; Metasequoia fast-growing tree; pyramidal glyptostroboides 90’’ 50’ 1,962 8’ in shape with soft, pale green Dawn Redwood needles and small cones; thrives in well-drained soil

* Conical in shape; shiny green Picea omorika needles with white underside; 40’ 20’ 314 6’ Serbian Spruce branches to ground; slow- growing

Deciduous conifer; Taxodium distichum pyramidal in shape; 70’ 30’ 707 8’ Bald Cypress feathery, delicate foliage; resistant to disease and pests

Many cultivars; slender, Thuja plicata drooping branches with 80’ 40’ 1,257 12’ Western Red Cedar dark green leaves; requires adequate space to grow

Spring Huge, gumdrop-shaped shrub Umbelluaria or tree, depending on how it’s californica 75’ 50’ 1,962 12’ grown; leaves can be used as a California Bay Laurel sweet bay substitute in cooking; fruiting in summer months City of Tukwila Approved Tree List 17 CONIFERS FOR SPECIAL SITES 2/2 Canopy Plant Bloom Scientific Name Sun Exposure Add’l Mature Size (ft) Fall Native Cover Strip Time & Color Characteristics Common Name Sun Partial Shade Water Height Spread (sq. ft.) Width Color

Xanthocyparis Tiny, scale-like leaves of nootkatensis 80’ 25’ 491 10’ blue-green; branches to Alaskan Yellow Cedar ground in drooping pattern

18 City of Tukwila Approved Tree List