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Class I - Narrow Parking Strips - strips & <10' Under utility lines B. Not under utility lines) Botanical Name Common Name Height Spread A/B Comments Landscape Features Acer palmatum dissectum Maple, Japanese Laceleafs 5-12 5-12 A Needs afternoon shade and a protected location Foliage interest either during the growing season or fall colors. Many varieties available. Crimson Queen, Red Dragon, Viridis, etc Acer platanoides 'Columnar' Columnar Norway Maple 35 15 B Green foliage that turns to golden yellow in the fall. Acer platanoides 'Crimson Sentry' Crimosn Sentry Maple 25 15 A/B Red new growth matures to a maroon-purple. Red- bronze in Fall. Acer rubrum or 'Bowhall' Red Maple 45-40 15 B Foliage is green during the growing season and turn yellow, orange and red tones in fall. Amelanchier grandiflora Serviceberry 20 15 A/B Fragrant white flowers in early spring that leads to 3/8" purple blue edible berries. Green foliage turns orange tones in fall. Amelanchier laevis Allegheny Serviceberry 25 15 A/B Fragrant white flowers in early spring that leads to small blue berries. Brilliant red fall color. Amelanchier laevis 'Snowcloud' Snowcloud Serviceberry 25 15 A/B Fragrant white flowers in early spring that leads to 3/8" purple blue edible berries. Green foliage turns scarlet in fall. Aronia melanocarpan 'Autumn Magic' Chokeberry, Autumn Magic 5-6 5-6 A White flowers in spring. Dark green leaves turn bright red to purple tones. In fall, black berries form and persist into winter. Betula nigra 'Summer Cascade' Birch, Summer Cascade 12-15 8-10 A Bronze birch borer resistant Green leaves that turn golden yellow. Winter interest, creamy brown bark that exfoliates. Caragana arboerscens Peashrub, Siberian 8/10 6/8 A Has thorns Green leaves that turn are yellow brown in fall. In spring has small yellow pea shaped flowers. Carpinus betulus 'Frans Fontaine' Columnary European Hornbeam 35 15 B Dark green foliage turns bright yellow in fall. Recommended Trees for the Mid-Columbia Region Page 1 Final Draft 9/09 ---PAGE BREAK--- Class I - Narrow Parking Strips - strips & <10' Under utility lines B. Not under utility lines) Botanical Name Common Name Height Spread A/B Comments Landscape Features Cornus alba'Argenteo-Marginata' Dogwood, Variegated Redtwig 6-10 5-8 A Shrub, use tree form Red stems are great for winter interest. Green with white margins are great for summer interest. x intermedia 'Spring Glory' Spring Glory 10 10 A Shrub, use tree form Yellow flowers in early spring cover branches. Green turning to purple-red tones over yellow fall color. Ginkgo biloba 'Princeton Sentry' Princeton Sentry Ginkgo 40 15 B Odd foliage shape for great interest. Golden-yellow fall color. Hydrangea paniculata Hydrangea, Panicle 10-15 10-15 A Shrub, use tree form Large panicle or pointed clusters of white flowers in mid- summer. Leave flower to dry and turn pink, lasts for months. Pee Gee, Pink Diamond, etc Liquidambar styraciflua 'Clydesform' Emerald Sentinel Sweetgum 30 12 B Green leaves turning to yellow/orange tones for fall. Oxydendron arboreum Sourwood 20 15 A/B Green foliage turn to brilliant scarlet red orange tones in fall. In mid-summer clusters of small bell shaped white flowers cover tree. Physocarpus opulifolius Ninebark, Diabolo 10 8 A Shrub, use tree form Dark mahogany-purple foliage all growing season. Small clusters of white flowers in May. White-tan exfoliating bark for winter interest. Prunus fruticosa 'Globosa' Cherry (Flowering), Globe 8-12 8 A See Class V In early to mid spring, covered in lots of small white flowers. Pyrus calleryana cultivars Capitol Pear 40-35 15-12 B Codling moth problems possible, see Class V Dark green foliage turn red/yellow tones for fall. In spring before the leaves tree is covered in cluster of white flowers. Quercus alba x Q. robur Crimson Spire Oak 45 15 B Green foliage turns red tones for fall. Retains leaves all through winter. Ribes sanguineum 'King Edward VII' Currant (Flowering), King Edward VII 6-8 6-8 A In early to mid-spring, clusters of red-pink panicle clusters of flowers appear to drip at first then stand up. Long color show. Syringa lacinata Lilac, Cutleaf 8 5-6 A Deeply serrated leaf shape. In spring, fragrant lavender pink blooms are in great abundance. Syringa meyeri 'Palibin' Lilac, Dwarf Korean Lilac 8 5-6 A Violet-purple flowers emerge in mid-spring for a good color show. Syringa x 'Bailebelle' Lilac, Tinkerbelle 8 5-6 A In mid to late spring, wine red flowers appear with a spicy fragrance Syringa x 'Bailming' Lilac, Prince Charming 8 5-6 A In mid to late dpring, lavender pink flowers appear with a pleasant fragrance. Tilia cordata 'Corzam' Corinthian Linden 45 15 B Green leaves turn yellow for fall. In June, clusters of small fragrant, yellow flowers appear. Page 2 Final Draft 9/09 ---PAGE BREAK--- Class I - Narrow Parking Strips - strips & <10' Under utility lines B. Not under utility lines) Botanical Name Common Name Height Spread A/B Comments Landscape Features Tilia cordata 'Halkar' Summer Sprite Linden 45 15 B Green leaves turn yellow for fall. In June, clusters of small fragrant, yellow flowers appear. Viburnum opulus 'Sterile' Viburnum, Snowball Tree 10 10 A Green leaves turn to red tones in fall. Ball-shaped clusters of white flowers cover tree in May. Page 3 Final Draft 9/09 ---PAGE BREAK--- Botanical Name Common Name Height Spread A/B Comments Landscape Features Acer buergeranum Trident Maple 20 20 Glossy green leaves turn red orange tones in fall. Acer campestre 'Panacek' Maple, Hedge Metro Gold 35 20 Dark green leaves turn bright yellow in fall. Acer ginnala Maple, Amur 15-20 15 A Medium green foliage turns brilliant orange-red to deep red in fall. Acer griseum Maple, Paperbark 20-30 10-15 Leaves emerge red, mature to green, then turn back to red for fall. Has exfoliating, cinnamon bark. Acer palmatum Maple, Japanese family 12-25 15-20 A Needs proctection from afternoon sun and west winds Assorted shapes, textures, foliage interest in spring, summer and fall. Bloodgood, Fireglow, Sangu Kaku, etc Acer platanoides 'Columnare' Maple Norway, Columnar 50 15-20 Dark green turn golden yellow in fall. Acer platanoides 'Easy Street' Maple, Easy Street 40 20 Dark green turn golden yellow in fall. Acer rubrum 'Autumn Spire' Maple Red Autumn Spire 50 20-25 Green leaves turn to red tones in fall. Acer rubrum 'Bowhall' Maple, Red Bowhall 40 10-15 Green leaves turn yellow, orange and red tones in fall. Acer rubrum 'Karpick' Maple, Red Karpick 40 20 Green leaves turn to yellow and red tones in fall. Acer tataricum Maple, Tatrian and family 20-25 18-20 A Green leaves turn red on the outside and yellow on the inner foliage. Seeds are persistent and red in late spring- early summer. Hot Wings, etc Acer x freemanii Maple, 40-50 15 Green leaves turn to red tones infall. Acer x freemanii 'Celzam' Maple, Celebration 45 20-25 Dark green turn golden yellow in fall. Acer x freemanii 'Scarsen' Maple, Scarlet Sentinel 40-45 20-25 Green leaves turn to red tones in fall. Amelanchier laevis Serviceberry, Allegheny 25 15 A Fragrant, white flower clusters in early spring, produce purple-red berries. Green leaves turn orange-red in fall. Amelanchier x grandiflora Serviceberry, Autumn Brillance 20-25 15 A Fragrant, white flower clusters in early spring, produce purple-black berries. Green leaves turn red orange tones in fall. Carpinus caroliniana Hornbeam, American 25 20 Green leaves turn golden yellow in fall. Catalpa bungeii 'Nana' Catalpa, Umbrella 18-20 18-20 A Large heart shaped leaves. Chionanthus virginiana Fringe Tree, american 18 20 Tree form Medium to dark green turn yellow for the fall. In late spring has lots of clusters of white flowers. Cornus florida Dogwood, Eastern and family 15-20 15-20 A Needs protection from winds, not a street tree Medium green leaves turn red tones for the fall. Flower colors vary from variety to variety of whites, light pinks and rose-reds. Generally blooms in mid-April. Pink, Red, White, Cherokee Series, etc Class II- Parking Strips - strips >10' wide & <20' wide Page 4 of 13 ---PAGE BREAK--- Botanical Name Common Name Height Spread A/B Comments Landscape Features Class II- Parking Strips - strips >10' wide & <20' wide Cornus kousa Dogwood, Kousa and family 20 20 A Needs protection from winds, not a street tree Medium green leaves turn red tones for the fall. Flower colors vary from variety to variety of whites and light pinks. Generally blooms in mid to late May. Kousa, Satomi, etc Cornus mas Dogwood, Cornelian Cherry 20-25 15 Cotinus Smoke tree and family (tree form) 15-20 15-20 A Foliage color ranges from green to purple red with brilliant red to orange fall color. In late spring clusters of smoky purple, puff-like panicles flowers appear. Laburnum x watereri 'Vossii' Goldenchain, Vossii 25 20 All parts poisonous Abundant clusters of yellow flowers in spring. Mackia amurensis Mackia, Amur 25 20 Nitrogen fixer Upright clusters of white flowers in mid summer. Malus x 'Spring Snow' Crabapple, Spring Snow 25 15-20 A Sterile, no fruit Yellow bark backdrops loads of white, sterile flowers in spring before the leaves. Nyssa sylvatica Tupelo, Black 35 20 Dark green leaves turn to hot copper red in fall. Parrotia persica Parrotia, Persian 20-40 15-25 Hard to find in a single trunk Green textured leaves turn to a multi-toned fall color of yellows, purples, reds and oranges. Unusual flower shape of red stamen in early spring. Populus tremula 'Erecta' Aspen, Swedish Columnar 40 10-15 Green leaves turn yellow orange in fall. Prunus (Flowering Cherry Hybrids) Cherry (Flowering), Hybrids 15 to 30 15 to 30 Not to be planted near hot surfaces; See Class V A wide of variety of structures, and flower can be simple to double and range in color from white to a dark pink. Okame, Mt Fuji, Kwanzan, etc Prunus (Flowering Plum) Plum (Flowering), Hybrids See Class V The majority have purple red leaves with single pink flowers before leaves emerge. 'Blireiana' has double pink flowers and red foliage matures to olive green. Newport, Thundercloud, Krauter Vesuvius, Cistena, etc Prunus virginiana Chokecherry 20-30 20-25 Varieties can have green foliage that turns yellow. 'Canada Red' has green leaves that mature purple red. All have small white flowers. Pyrus calleryana Pear, Flowering 30-35 15-30 See Class V Dark green leaves turn purple red tones for fall. All have single white flowers that cover the tree in spring before the leaves emerge. Cleveland Select, Aristocrat, Autumn Blaze, Chanticleer, etc Quercus alba x Q. robur Oak, Crimson Spire 45 15 Dark green leaves turn red tones for fall. Retains leave through winter. Page 5 of 13 ---PAGE BREAK--- Botanical Name Common Name Height Spread A/B Comments Landscape Features Class II- Parking Strips - strips >10' wide & <20' wide Syringa reticulata Lilac, Japanese Tree 25 15 In late spring, produces fragrant white clusters of flowers. Page 6 of 13 ---PAGE BREAK--- Class III- Corridor Planting Areas- areas along corridor >20' wide & <35' wide with crowns no wider than 40' Botanical Name Common Name Height Spread A/B Comments Landscape Features Acer campestre Maple, Hedge 30 30 Dark green leaves turn bright yellow in fall. Acer miyabei 'Morton' Maple, State Street 25-40 20-35 Dark green leaves turn yellow in fall. Acer negundo Boxelder, Sensation and Variegated 35 25-30 Can attract boxelder bugs Sensation' has green leaves that turn red. Variegated has green with white edged leaves. Acer platanoides Maple, Norway Hybrids 50 30-40 Excludes parent plant Dark green turn golden yellow in fall. Acer platanoides Emerald Queen, Deborah, Easy Street, Crimson King, etc Acer platanoides 'Colunarbroad' Maple, Parkway 40 25 Dark green turn golden yellow in fall. Acer rubrum Maple, Red and family 40 to 50 35 to 40 Green leaves turn to red tones in fall. Color changes and fall color varies by variety. October Glory, Red Sunset, Burgundy Belle, etc Acer saccharinum 'Silver Cloud' Maple, Silver Cloud 50-60 30 Bright green leaves with bright yellow fall color. Acer saccharinum 'Silver Queen' Maple, Silver Queen 50 40 Bright green leaves with bright yellow fall color. Acer saccharum 'Green Mountain' Maple, Green Mountain 50-75 35-40 Heat tolerant Medium green foliage that turns orange in fall. Acer x freemanii Maple, Freeman 50-60 40 Dark green foliage that turns orange, red and yellow tones in fall. Color change and fall color varies by variety. Autumn Blaze, Sienna Glen, Marmo, etc Aesculus x carnea Horsechestnut, Red and Family 40 to 50 35 In spring clusters of pink or red flowers emerge. Flower color varies by variety. Alnus glutinosa Alder, Black 50 30 Nitrogen Fixer. Betula nigra Birch, River and family 40-50 30-40 Heat and birch borer resistant Green leaves turn to golden yellow in fall. Has exfoliating bark of cream, orange and brown. Bark color varies by variety. Dura Heat, Heritage, etc Betula papyrifera 'renci' Birch, Renaissance Reflection 60 25 Heat and birch borer resistant White exfoliating bark with dark green leaves that turn yellow in fall. Betula papyrifera 'Varen' Birch, Prairie Dream 50 40 Heat and birch borer resistant White exfoliating bark with dark green leaves that turn yellow in fall. Betula 'Fargo' Birch, Dakota Pinnacle 60 25 Heat and birch borer resistant White exfoliating bark with dark green leaves that turn yellow in fall. Betula 'VerDale' Birch, Prairie Vision 35-45 30-35 Heat and birch borer resistant White exfoliating bark with dark green leaves that turn yellow in fall. Capinus betulus Hornbeam, European 40-60 25-40 Green leaves turn golden yellow in fall. Page 7 of 13 ---PAGE BREAK--- Class III- Corridor Planting Areas- areas along corridor >20' wide & <35' wide with crowns no wider than 40' Botanical Name Common Name Height Spread A/B Comments Landscape Features Catapla x erubescens Catalpa, Purple 40 30 New growth is purple Leaves emerges purple and mature to green. Flowers in late spring with clusters of white blooms. Celtis occidentalis Hackberry, Common 50-75 50 Cercis canadensis Redbud, Eastern 20-30 20-25 Small flowers cover branches, varies in color from shades of pink to lavender, depending on variety. Oklahoma, Flame, etc. Gingko biloba (male) Gingko (Male strains) 45-50 25-40 Fan-shaped green leaves turn yellow for fall. Autumn Gold, Halka, The President, Shangri-La, Saratoga Gleditsia triacanthos var. inermis Honeylocust 40 to 60 30-35 Thornless Depending on variety, green leaves turn yellow for fall. 'Sunburst' has yellow new growth. Gymnocladus dioica Coffeetree, Kentucky 50 35 Not easy to find Tolerant to our environment. Green leaves turn yellow for fall. Irregular growing habit. Koelreuteria paniculata Goldenrain Tree 30 30 In late spring panicles of yellow blooms cover the tree. Seed pods resemble Chinese lanterns. Liquidamber styraciflua Sweetgum 40-50 25-30 Corky bark and dark green foliage. Fall color ranges from yellows, reds to purple tones. Fall color depends on variety. American, Cherokee, Worplesdon Maackia amurensis Maackia, Amur 20-30 20-30 Upright clusters of white flowers in mid summer. Metasequoia Redwood, Dawn 60 25 Dark green needles that turn rusty orange in fall. Rough brown barked is interesting too. Ostrya viginiana Hophornbeam, American 40 25 Adaptive tree with green leaves. Pistacia chinensis Pistache, Chinese 30 30 Dark green leaves turn orange-red for fall. Quercus frainetto Oak, Forest Green 50 30 Dark glossy green leaves with yellow fall color. Sorbus aucuparia Mt. Ash, Carindal Royal 40 20 Dark green leaves turn orange red for fall. Has either orange or red berries. Taxodium distichum Bald Cypress 50-70 25-30 Light green needles with a fine textured look. Needles turn rusty orange for fall. Shawnee Brave, etc Tilia americana Linden, American 40 to 60 25-30 Green leaves turn yellow for fall. In June, clusters of small fragrant, yellow flowers appear. Redmond, etc Tilia cordata Linden, Littleleaf 35-50 30-35 Green leaves turn yellow for fall. In June, clusters of small fragrant, yellow flowers appear. Shamrock, Greenspire, Chancellor, etc Ulmus wilsoniana Elm, Prospector 40 30 Dutch elm disease resistant Large dark green leaves with yellow fall color. Page 8 of 13 ---PAGE BREAK--- Class III- Corridor Planting Areas- areas along corridor >20' wide & <35' wide with crowns no wider than 40' Botanical Name Common Name Height Spread A/B Comments Landscape Features Zelkova serrata Zelkova, Japanese 60-70 35-40 Dark green leaves turn rusty red in fall. Greenvase, Village Green Zelkova serrata 'Schmidtlow' Zelkova, Wireless 20 36 A Dark green leaves turn rusty red fall color. Page 9 of 13 ---PAGE BREAK--- Class IV-Open Space-open areas >35' wide with no utility & no limit to width or height Botanical Name Common Name Height Spread Comments Landscape Features Acer platanoides Maple, Norway 45-60 40-60 Dark green turn golden yellow in fall. Cladrastis kentuckea Yellowwood, American Green leaves turns brilliant yellow in fall. White flower clusters in late spring. Eucommia ulmoides Hardy Rubber Tree 45 45 Hard to find Glossy dark green leaves turn yellow in fall. Adaptive tree. Fagus sylvatica Beech, Green Bronze fall color. Fraxinus 'Urbanite' Ash, Urbanite 50 40 Ash borer a serious problem for stressed ash Dark green leaves turn mahogany-purple to yellow tones in fall. Gleditsia triacanthos var. inermis Honeylocust 40 to 60 30-35 Thornless Depending on variety, green leaves turn yellow in fall. 'Sunburst' has yellow new growth. Gymnocladus dioicus Coffee Tree, Kentucky 50 35 Not easy to find Tolerant to our environment. Green leaves turn yellow in fall. Irregular growing habit. Lirodendron tulifera Tulip Tree 70-90 35-50 Green tulip shaped leaves turn yellow in fall. Flowers are yellow "tulips" produced in summer when tree mature. Phellodendron lavallei Cork Tree 40 35 Dark green leaves turn yellow in fall. Platanus x acerfolia 'Bloodgood' 'Columbia' Sycamore (Plane Tree), Bloodgood, Columbia 90 50 Anthracnose resistant Durable trees that are for large areas that need quick shade. Quercus cocinea Oak, Scarlet 75 50 Green leaves turns rusty red in fall. Quercus macrocarpa Oak, Bur 60 60 Green leaves with deeply lobed leaves. Turns yellow in fall. Quercus muehlenbergii Oak, Chinkapin 50 50 Dark green with yellow toned fall color. Quercus rubra Oak, Northern Red 50-60 50 Green leaves that turn orange-red in fall. Salix Willows 50-60 40-60 Shallow, invasive roots, likes water Green leaves that turn yellow in fall. Some varieties have winter interest with there stem being yellow, orange or even red. Golden Niobe, Navajo, Green Weeping, etc Tilia americana Linden, American 40 to 60 25-30 Green leaves turn yellow in fall. In June, clusters of small fragrant, yellow flowers appear. Ulmus hyrbids Elm, Hybids 40-50 35-45 Dutch elm disease resistant varieties available Green leaves with a variety of leaf size, shape and fall color that varies by variety. Frontier, Accolade, etc Ulmus parvifolia 'Allee' Elm, Lacebark 50 35 Dutch elm disease resistant varieties available Glossy dark green foliage that turns yellow-orange to rust-red. Page 10 of 13 ---PAGE BREAK--- Evergreen Trees Botanical Name Common Name Height Spread A/B Comments For Larger Areas Abies concolor Canadians Blue Fir, Concolor Blue (White) 30 15-20 Cedrus atlantica Cedar, Blue Atlas 30-40 20-30 Picea pungens Spruce, Colorado 40-60 20-25 Requires regular watering, not very drought tolerant Pinus nigra Pine, Austrian Black 40-50 20-30 Pinus sylvestris Pine, Scotch 40-60 20-25 Sequoiadendron giganteum Sequoia, Giant 50 30 Thuja plicata Cedar, Western Red 50 20-30 Needs winter watering For Smaller Areas Abies koreana 'Horstmann's Silberlocke' Fir, Horstmann's Korean 12-15 8-10 Needs winter watering Calocedrus decurrens Cedar, Incense 30-40 10-20 Needs winter watering Cedrus atlantica Hybrids Cedar, Blue Atlas Hybrids 20-30 15-20 Granny Louise, Himalayan Blue, Weeping (Pendula) Cedrus deodara Hybrids Cedar, Deodara Family 20-30 10-20 Best protected form wind Chamaecyparis nootkatensis 'Pendula' Cedar, Weeping Alaskan 20-30 8-10 Chamaecyparis obtusa Hinoki Cypress and family 5-12 3-15 Afternoon shade needed Juniperus scopulorum Juniper, Tolleson's Blue Weeping 10-20 10-15 Picea omorika Hybrids Spruce, Serbian Family 6-15 10-15 Bruns, Weeping, Dwarf Picea pungens (Hybrids) Spruce, Colorado hybrids 15-30 8-15 Requires regular watering, not very drought tolerant Fat Albert, Hoopsi, Bacheri, etc. Pinus aristata Pine, Bristlecone 20 8 Can be hard to find Pinus flexis 'Vanderwolf's pyramid' Pine, Vanderwolf's 20-25 10-15 Pinus heldreichii 'Leucodermis' Pine, Bosnian Red Cone 20 10 Pinus nigra (Hybrids) Pine, Austrain hybrids - Anorld Sentinel, Oregon Green, Brepo, Compact, etc 20-30 7-20 Pinus thunbergiana 'Thunderhead' Pine, Thunderhead 10-12 10-12 Page 11 of 13 ---PAGE BREAK--- Evergreen Trees Botanical Name Common Name Height Spread A/B Comments Page 12 of 13 ---PAGE BREAK--- Class V-Fruiting Trees Restricted WACs (O-Ornamental F-Bearing Edible Fruit) Common Name O or F Comments Almond F Apples F Codling moth and apple maggot host Apricot F Apricot, Flowering O Cherry, Flowering O Remove all suckers to prevent rootstock from bearing fruit Cherry, Sour F Western cherry fruit fly Cherry, Sweet F Western cherry fruit fly Crabapple, Flowering Hybrids O Codling moth and apple maggot host Crabapple, Fruiting Hybrids F Codling moth and apple maggot host Hawthorne, Flowering O Codling moth and apple maggot host Peach/Nectarine F Peach/Nectarine Flowering O Pear, Asian F Codling moth and apple maggot host Pear, European F Codling moth and apple maggot host Pear, Flowering O Codling moth and apple maggot host Pluot, Aprium F Plum, European F Plum, Flowering O Plum, Japanese F Page 13 of 13