Linear Arboretum
Linear Arboretum
photo: Greg Tudor
The Ainsworth Linear Arboretum is unique among U.S. arboretums. It spans actual city blocks and includes street and yard trees. You can view more than 60 different species of city trees within walking or bicycling distance of each other.
Many of the arboretum's trees were planted by Friends of Trees. Others were planted by individual residents or by the city of Portland. Longtime Friends of Trees volunteer Jim Gersbach, a resident of the Concordia neighborhood, conceived the idea of the linear arboretum.
The arboretum extends along NE Ainsworth Street for two miles, from NE Martin Luther King Jr. Blvd. to Fernhill Park. Below is a list of the trees and their addresses.
| Common Name | Scientific Name | Physical Location |
|---|---|---|
| Green Ash | Fraxinus pennsylvanica | 500 Block of NE Ainsworth |
| Bloodgood Sycamore | Platanus x acerifolia 'Bloodgood' | NE Ainsworth median across from 620 NE Ainsworth |
| Sugar Maple | Acer saccharum | NE Ainsworth median across from 636 NE Ainsworth |
| Horse Chestnut | Aesculus hippocastanum | 649 NE Ainsworth |
| Paperbark Maple | Acer griseum | 710 NE Ainsworth |
| Bamboo-leaf Oak/Chinese Evergreen Oak | Quercus myrsinifolia | 710 NE Ainsworth |
| Bur Oak | Quercus macrocarpa | NE Ainsworth median across from 741 NE Ainsworth |
| Queen Elizabeth Hedge Maple | Acer campestre 'Evelyn' | 842 NE Ainsworth |
| Tatarian Maple | Acer tataricum | 842 NE Ainsworth |
| Goldenrain Tree | Koelreuteria paniculata | 842 NE Ainsworth |
| Chinese Dogwood | Cornus kousa 'Blue Shadow' | 842 NE Ainsworth |
| Village Green Zelkova | Zelkova serrata 'Village Green' | 876 NE Ainsworth |
| June Snow Dogwood | Cornus controversa 'June Snow' | 876 NE Ainsworth |
| Magyar Ginkgo | Ginkgo biloba 'Magyar' | 879 NE Ainsworth |
| Tuliptree | Liriodendron tulipfera 'Aureamarginatum' | Median between 8th and 9th avenues |
| Hedge Maple | Acer campestre | 924 NE Ainsworth |
| Paperbark Maple | Acer griseum | 941 NE Ainsworth |
| Green Vase Zelkova | Zelkova serrata 'Green Vase' | NE Ainsworth median between 10th & 11th streets (easternmost tree & fourth tree from east) |
| Japanese Pagodatree | Sophora japonica 'Regent' | NE Ainsworth median between 10th & 11th (third from east) |
| Black Tupelo | Nyssa sylvatica | NE Ainsworth median between 10th & 11th (fifth from east) |
| Asian Persimmon | Diospyros kaki 'Fuyu' | 1134 NE Ainsworth |
| American Hornbeam | Carpinus caroliniana | 1134 NE Ainsworth |
| American Hophornbeam | Ostrya virginiana | 1204 NE 12th St. |
| Dynasty Crape Myrtle (two) | Lagerstroemia 'Dynasty' | 1204 NE 12th St. |
| Edith Bogue Magnolia | Magnolia grandiflora 'Edith Bogue' | 1306 NE Ainsworth |
| Japanese Hornbeam (two) | Carpinus japonica | 1314 NE Ainsworth |
| Oregon White Oak | Quercus garryana | 1329 NE Ainsworth |
| Elizabeth Magnolia | Magnolia 'Elizabeth' | 1406 NE Ainsworth |
| Chinese Fringetree | Chionanthus retusus | 1406 NE Ainsworth |
| Persian Ironwood | Parrotia persica | 1406 NE Ainsworth |
| Staghorn Sumac | Rhus typhina | 1503 NE Ainsworth |
| Fairview Flame Red Maple (two) | Acer rubrum 'Fairview Flame' | 1506-1524 NE Ainsworth |
| Fragrant Snowbell | Styrax obassia | 1524 NE Ainsworth |
| Deodar Cedar* | Cedrus deodara | 1636 NE Ainsworth |
| Eastern Redbud | Cercis canadensis | 1715 NE Ainsworth |
| Katsura | Cercidiphyllum japonicum | 1735 NE Ainsworth |
| Hackberry | Celtis occidentalis | NE Ainsworth median between 17th & 18th (easternmost tree) |
| Green Vase Zelkova | Zelkova serrata 'Green Vase' | NE Ainsworth median between 17th & 18th (westernmost tree) |
| Northern Catalpa | Catalpa speciosa | 2737 NE Ainsworth |
| Kentucky Coffee Tree | Gymnocladus dioicus | 5953 NE 18th Ave. |
| Snow Gum* | Eucalyptus pauciflora ssp. niphophila | 1804 NE Ainsworth |
| Saucer Magnolia | Magnolia x soulangiana | 1814 NE Ainsworth |
| Korean Mountain Ash | Sorbus alnifolia | 5949 NE 19th St. |
| Edith Bogue Magnolia | Magnolia grandiflora | 1837 NE Ainsworth |
| Tuliptree | Liriodendron tulipifera | 1929 NE Ainsworth |
| Umbrella Pine | Sciadopitys verticillata | NE Ainsworth median across from 2005 NE Ainsworth |
| Flowering Ash | Fraxinus ornus | Alberta Park |
| Chinese Fringetree | Chionanthus retusus | Alberta Park |
| Redbud | Cercis canadensis | Alberta Park |
| Sourwood | Oxydendron arboreum | Alberta Park |
| Sweet Gum Tree | Liquidambar styraciflua | 2207 NE Ainsworth |
| Yellow Fever Magnolia (two) | Magnolia x acuminata 'Yellow Fever' | 2306 NE Ainsworth |
| Coast Redwood* | Sequoia sempervirens | 2306 NE Ainsworth |
| Kentucky Coffee Tree | Gymnocladus dioicus | 2337 NE Ainsworth |
| Mountain Silverbells | Halesia monticola | NE Ainsworth & 24th St. |
| Atlas Cedar* | Cedrus libani ssp. atlantica | 2406 NE Ainsworth |
| Chinese Dogwood | Cornus kousa | 2417 NE Ainsworth |
| Persian Ironwood | Parrotia persica | 2516 NE Ainsworth |
| Purple Catalpa | Catalpa x erubescens 'Purpurea' | 2519 NE Ainsworth |
| Chinese Dogwood | Cornus kousa | 2529 NE Ainsworth |
| Rivers Purple Beech | Fagus sylvatica 'Riversii' | 2617 NE Ainsworth |
| Edith Bogue Magnolia | Magnolia grandiflora | 2711 NE Ainsworth |
| Sweet Gum Tree | Liquidambar styraciflua | 2815 NE Ainsworth |
| Sweet Gum Tree | Liquidambar styraciflua | 2835 NE Ainsworth |
| Oregon White Oak* | Quercus garryana | 2835 NE Ainsworth |
| Hackberry | Celtis occidentalis | NE Ainsworth median across from 2835 NE Ainsworth |
| American Smoketree | Cotinus obovatus | 2908 NE Ainsworth |
| Snowbell | Styrax hemsleyanus | 2908 NE Ainsworth |
| Chinese Pistache | Pistacia chinensis | 2908 NE Ainsworth |
| Katsura | Cercidiphyllum japonicum | 2941 NE Ainsworth |
| Japanese Stewartia (three) | Stewartia pseudocamellia | 3002 NE Ainsworth |
| Chinese Dogwood | Cornus kousa | 3024 NE Ainsworth |
| Scarlet Oak | Quercus coccinea | 3027 NE Ainsworth |
| Yellow Fever Magnolia | Magnolia x acuminata 'Yellow Fever' | 3036 NE Ainsworth |
| Sterling Silver Linden | Tilia tomentosa 'Sterling' | 3041 NE Ainsworth |
| Magyar Ginkgo | Ginkgo biloba 'Magyar' | NE Ainsworth & 31st St. |
| American Yellowwood | Cladrastis kentuckea | NE Ainsworth & 31st St. |
| Village Green Zelkova (two) | Zelkova serrata 'Village Green' | NE Ainsworth & 31st St. |
| Frontier Elm | Ulmus 'Frontier' | NE Ainsworth & 31st St. |
| Rivers Purple Beech | Fagus sylvatica 'Riversii' | NE Ainsworth & 31st St. |
| Black Tupelo | Nyssa sylvatica | NE Ainsworth & 31st St. |
| American Hornbeam | Carpinus caroliniana | 3116 NE Ainsworth |
| Chilean Beech/Roble (two) | Nothofagus obliqua | Between 32nd Ave. & 32nd Pl. |
| Yellow Fever Magnolia (two) | Magnolia x acuminata 'Yellow Fever' | 5955 NE 32nd St. |
| Sweet Gum Tree | Liquidambar styraciflua | 3217 NE Ainsworth |
| Sophora Japonica | Sophora japonica 'Regent' | 3220 NE Ainsworth |
| Deodar Cedar* | Cedrus deodara | 3236 NE Ainsworth |
| Shademaster Honeylocust | Gleditsia triacanthos | NE Ainsworth & 32nd St. |
| Atlas Cedar* | Cedrus libanii ssp. atlantica | 3267 NE Ainsworth |
| Japanese Pagodatree | Sophora japonica 'Regent' | NE Ainsworth median between 32nd St. & 32nd Pl. (fourth tree from east) |
| Hackberry | Celtis occidentalis | NE Ainsworth median between 32nd & 33rd (easternmost tree) |
| Trident Maple (four) | Acer buergerianum | 6002 NE 33rd St. at NE Ainsworth |
| Black Tupelo | Nyssa sylvatica | 6002 NE 33rd St. at NE Ainsworth |
| Green Vase Zelkova (three) | Zelkova serrata 'Green Vase' | 3436 NE Ainsworth |
| Dove Tree | Davidia involucrata | Corner of NE Ainsworth & 35th Pl. |
| Natchez Crapemyrtle | Lagerstroemia x fauriei 'Natchez' | 3576 NE Ainsworth |
| June Snow Dogwood (two) | Cornus controversa | 3602 NE Ainsworth |
| Sweetgum Tree | Liquidambar styraciflua | 3624 NE Ainsworth |
| Tricolor European Beech | Fagus sylvatica 'Roseomarginata' | 3627 NE Ainsworth |
| June Snow Dogwood | Cornus controversa 'June Snow' | N side of Ainsworth, between NE 36th & NE 37th |
| Kentucky Coffee Tree | Gymnocladus dioica | 5953 NE Ainsworth |
| Yellow Fever Magnolia (two) | Magnolia x acuminata 'Yellow Fever' | 5955 NE Ainsworth |
