Scientific name	Common name
Acer macrophyllum	bigleaf maple
Acer palmatum  Atropurpureum Group	red-leaf Japanese maple
Acer rubrum	red maple
Acer saccharinum	silver maple
Aesculus hippocastanum	common horse chestnut
Alnus rubra	red alder
Arbutus menziesii	arbutus, madrona
Aucuba japonica	Japanese aucuba, Japanese laurel
Betula papyrifera	paper birch
Buddleja davidii	butterfly bush
Buxus sempervirens	common boxwood
Carpinus betulus	European hornbeam
Cercidiphyllum japonicum	Katsura, Japanese Katsura tree
Cornus nuttallii	Pacific dogwood
Cotinus coggygria	smoke bush
Euonymus alatus	burning bush, winged euonymus, winged burning bush
Fagus sylvatica	European beech
Forsythia x intermedia (incl. cvs.)	forsythia
Gleditsia triacanthos  f. inermis	thornless honey locust
Hydrangea macrophylla	bigleaf hydrangea
Juniperus sabina	savin juniper
Juniperus scopulorum  cvs.	Rocky Mountain juniper, Wichita Blue juniper, Tolleson's Blue Weeping juniper
Liriodendron tulipifera	tulip tree, yellow poplar
Mahonia aquifolium  ( syn. Berberis )	Oregon grape
Malus floribunda	Japanese flowering crabapple
Photinia x fraseri	photinia
Pieris japonica	lily-of-the-valley shrub
Pinus contorta  var. contorta	shore pine
Pinus mugo	mugo pine, Swiss mountain pine
Pinus sylvestris	Scots pine
Platanus x acerifolia  ( syn. x  hispanica )	London plane
Populus nigra  'Italica'	Lombardy poplar
Populus trichocarpa	black cottonwood , western balsam-poplar
Potentilla fruticosa  ( syn. Dasiphora )	potentilla, cinquefoil
Prunus  'Kanzan'	Kwanzan cherry, Kanzan cherry
Prunus laurocerasus	English laurel, cherry laurel
Pseudotsuga menziesii	Douglas fir
Quercus palustris	pin oak
Quercus robur	English oak
Rhododendron macrophyllum	Pacific rhododendron
Rosa rugosa	rugosa rose
Sequoiadendron giganteum	Sierra redwood
Sorbus aucuparia	European mountain ash
Spiraea japonica	Japanese spirea
Taxus x media	yew
Taxus brevifolia	Pacific yew, western yew
Thuja plicata	western red cedar
Tilia cordata	little leaf linden , small-leaved lime
Tsuga heterophylla	western hemlock
Viburnum plicatum  cvs.	Japanese snowball bush, doublefile viburnum