Scientific name	Common name
Abies amabilis	Amabilis fir, Pacific silver fir
Abies balsamea  'Nana'	balsam fir, dwarf balsam fir
Abies cephalonica  'Meyer's Dwarf'	Meyer's Dwarf fir, dwarf Greek fir
Abies fraseri	Fraser fir
Abies grandis	grand fir
Acer circinatum	vine maple
Acer glabrum  var.  douglasii	Douglas maple, Rocky Mountain maple
Acer griseum	paperbark maple
Acer palmatum	Japanese maple
Acer palmatum  'Koto No Ito'	Koto No Ito maple
Acer palmatum  Atropurpureum Group	red-leaf Japanese maple
Acer platanoides	Norway maple
Acer platanoides  'Princeton Gold'	Princeton Gold Norway maple
Acer pseudoplatanus	sycamore maple
Acer tataricum  ssp. ginnala	Amur maple, Tatarian maple
Actinidia kolomikta	actinidia
Adiantum pedatum	maidenhair fern
Aesculus x carnea  'Briotii'	ruby horse chestnut, red horse chestnut
Aesculus flava	yellow buckeye
Agrostis capillaris	colonial bentgrass
Agrostis stolonifera	creeping bentgrass
Amelanchier alnifolia	serviceberry, Saskatoon
Asimina triloba	pawpaw, Custard apple
Athyrium filix-femina	lady fern
Betula nigra	river birch
Blechnum spicant	deer fern
Carpinus betulus	European hornbeam
Cercidiphyllum japonicum	Katsura, Japanese Katsura tree
Cercis canadensis 'Burgandy Hearts'	redbud
Chamaecyparis pisifera	threadleaf false cypress, sawara cypress
Cornus canadensis	bunchberry
Cornus florida	eastern flowering dogwood, pink flowering dogwood
Cornus mas	Cornelian dogwood , Cornelian cherry
Cornus nuttallii	Pacific dogwood
Cornus sericea	red osier dogwood
Cornus sericea  'Silver and Gold'	variegated dogwood
Corylus avellana	European filbert, common hazel
Corylus colurna	Turkish filbert, Turkish hazel
Cotoneaster dammeri	bearberry cotoneaster
Cotoneaster lacteus	Parney cotoneaster
Crataegus x lavallei	Lavalle hawthorn
Crataegus douglasii	black hawthorn
Crataegus monogyna	common hawthorn
Crataegus phaenopyrum	Washington hawthorn
Cryptomeria japonica	Japanese cedar
Cryptomeria japonica  'Cristata'	Cockscomb Japanese cedar, crested Japanese cedar
Cucurbita maxima	pumpkin , winter squash
Cunninghamia lanceolata	China fir
Cyrtomium falcatum	Japanese holly fern
Davidia involucrata	dove tree, kleenex tree, handkerchief tree
Dryopteris expansa	northwest wood fern
Echinochloa crus-galli	barnyard grass
Elaeagnus pungens	thorny elaeagnus, silverthorn
Elymus repens  ssp. repens  ( syn. Agropyron repens )	quackgrass , couchgrass
Empetrum nigrum	crowberry , crawberry
Equisetum arvense	common horsetail
Euonymus europaeus	common spindle tree, European euonymus
Fagus sylvatica  'Aspleniifolia'	fern-leaf beech
Fagus sylvatica  'Purple Fountain'	weeping purple beech
Fagus sylvatica  'Rotundifolia'	round leaf beech
Festuca arundinacea	tall fescue
Festuca longifolia	hard fescue
Festuca ovina	sheep fescue
Festuca rubra  var. rubra	creeping red fescue
Frangula purshiana  ( syn. Rhamnus )	cascara
Fraxinus americana	white ash
Gaultheria shallon	salal
Gleditsia triacanthos  f. inermis	thornless honey locust
Gymnocladus dioica	Kentucky coffee tree
Halesia carolina	Carolina silverbell
Hamamelis virginiana	American witch hazel
Heuchera micrantha  cvs.	fancy-leafed coral bells , small-flowered alumroot , crevice alumroot
Hydrangea petiolaris	climbing hydrangea
Ilex x meserveae  'Centennial Girl'	Centennial Girl holly
Ilex x meserveae  'Blue Prince'	Blue Prince blue holly
Ilex crenata	Japanese holly
Iris pseudacorus	yellow flag iris
Jasminum nudiflorum	winter jasmine
Juncus effusus	common rush, bog rush
Juniperus scopulorum  cvs.	Rocky Mountain juniper, Wichita Blue juniper, Tolleson's Blue Weeping juniper
Liriodendron tulipifera	tulip tree, yellow poplar
Lolium multiflorum	annual ryegrass, Italian ryegrass
Lolium perenne	perennial ryegrass
Lonicera involucrata	black twinberry, bearberry honeysuckle
Lonicera japonica  'Purpurea'	Japanese honeysuckle
Magnolia x loebneri	Loebner magnolia
Magnolia kobus  var. kobus	northern Japanese magnolia
Mahonia nervosa  ( syn.  Berberis )	longleaf mahonia
Malus x domestica	apple
Malus fusca	Pacific crabapple
Malus sylvestris	European crabapple
Myrica gale	bog myrtle, sweet gale
Nyssa sinensis	Chinese tupelo
Nyssa sylvatica	black gum
Oemleria cerasiformis	Oso berry, Indian plum
Osmanthus x burkwoodii	Burkwood osmanthus
Ostrya virginiana	American hophornbeam, ironwood
Parrotia persica	Persian parrotia
Paxistima myrsinites	Oregon boxwood, false box
Picea abies	Norway spruce
Picea glauca	white spruce
Picea orientalis	oriental spruce
Picea pungens  Glauca Group	Colorado blue spruce, Colorado spruce
Pinus flexilis  'Vanderwolf's Pyramid'	Vanderwolf's pyramid pine
Pinus parviflora	Japanese white pine
Pinus ponderosa	Ponderosa pine, yellow pine
Pinus strobus	eastern white pine
Platanus x acerifolia  ( syn. x  hispanica )	London plane
Poa annua  var.  reptans	creeping bluegrass
Poa pratensis	Kentucky bluegrass
Poa supina	supina bluegrass
Poa trivialis	rough bluegrass, rough-stalked meadow grass
Polystichum munitum	western sword fern
Populus nigra  'Italica'	Lombardy poplar
Populus tremula  'Erecta'	columnar European aspen , columnar Swedish poplar
Prunus  'Kanzan'	Kwanzan cherry, Kanzan cherry
Prunus  (hybrid cvs.)	ornamental cherry tree
Prunus  x yedoensis	Yoshino cherry
Prunus avium	sweet cherry, bird cherry
Prunus padus  var. commutata	European bird cherry
Pseudotsuga menziesii	Douglas fir
Pyracantha coccinea	pyracantha, scarlet firethorn
Quercus x warei  'Long'	Regal Prince oak
Quercus robur	English oak
Rhus glabra	smooth sumac
Ribes sanguineum	flowering currant, winter currant
Rosa  Meineble cvs.	Meidiland carpet rose
Rosa nutkana	Nootka rose
Rubus parviflorus	thimbleberry
Rubus spectabilis	salmonberry
Salix babylonica  var. pekinensis 'Tortuosa'	corkscrew willow
Salix lucida  ssp. lasiandra	Pacific willow
Salix scouleriana	Scouler's willow, mountain willow
Salix udensis  'Sekka'	fantail willow
Sambucus racemosa  var. arborescens	coastal red elderberry
Sciadopitys verticillata	Japanese umbrella pine
Sequoia sempervirens	coast redwood
Sisyrinchium bellum	blue-eyed grass
Sorbus aucuparia	European mountain ash
Sorbus hupehensis  'Pink Pagoda'	Pink Pagoda mountain ash
Spiraea douglasii	hardhack
Spiraea nipponica	snowmound spirea
Spiraea trilobata	three lobe spirea
Styrax japonicus	Japanese snowbell, Japanese snowcone
Styrax obassia	fragrant styrax
Symphoricarpos albus	snowberry
Syringa meyeri	Meyer lilac, dwarf Korean lilac
Syringa reticulata	Japanese tree lilac
Syringa vulgaris	common lilac
Taxodium distichum	bald cypress, pond cypress
Taxus x media	yew
Taxus baccata  'Repandens'	dwarf English yew
Taxus brevifolia	Pacific yew, western yew
Tellima grandiflora	fringecup
Thuja plicata	western red cedar
Thujopsis dolabrata	hiba arborvitae
Tiarella trifoliata	trefoil foamflower
Tsuga heterophylla	western hemlock
Tsuga mertensiana	mountain hemlock
Typha latifolia	cattail , bullrush
Urtica dioica	stinging nettle
Viburnum x bodnantense  'Dawn'	Bodnant viburnum
Viburnum davidii	David viburnum
Viburnum trilobum	cranberry-bush, highbush cranberry
Xanthoria  spp.	yellow lichen