Scientific name	Common name
Acer palmatum	Japanese maple
Acer rubrum	red maple
Achillea millefolium	common yarrow
Aconitum napellus	monkshood
Actinidia kolomikta	actinidia
Aegopodium podagraria  'Variegatum'	goutweed, bishop's weed
Aesculus hippocastanum	common horse chestnut
Ajuga reptans	bugleweed, carpet bugleweed
Andromeda polifolia	bog rosemary
Anemone pulsatilla	pilsatilla, pasque flower
Antennaria dioica	pussy toes
Arabis caucasica	rock cress
Arctostaphylos uva-ursi	bearberry, kinnikinnick
Aronia melanocarpa	black chokeberry
Artemisia schmidtiana	silvermound, wormwood, silver mound
Astilbe x arendsii cvs.	hybrid astilbe, garden astilbe
Begonia rex  (incl. hybrids)	rex begonia
Bergenia cordifolia	heartleaf bergenia
Betula papyrifera	paper birch
Betula pendula	European white birch, silver birch
Brassica oleracea  (Acephala Group)	kale , collard
Brassica oleracea  (Botrytis Group)	cauliflower
Brassica oleracea  (Capitata Group)	cabbage, head cabbage
Brassica oleracea  (Gemmifera Group)	Brussels sprout
Brassica oleracea  (Italica Group)	broccoli
Buddleja davidii	butterfly bush
Buxus microphylla	Asian boxwood, Korean boxwood, Winter Gem boxwood
Calluna vulgaris	heather
Caltha palustris	yellow marsh marigold
Campanula carpatica	Carpathian harebell, canterbury bells
Caragana arborescens	Siberian peashrub
Catalpa speciosa	western catalpa
Cercidiphyllum japonicum	Katsura, Japanese Katsura tree
Chamaecyparis pisifera  'Filifera Aurea'	gold threadleaf false cypress
Chasmanthium latifolium	northern sea oats
Clematis  'Nelly Moser'	Nelly Moser clematis
Clethra alnifolia	summersweet , sweet pepperbush
Coreopsis verticillata	threadleaf coreopsis, whorled tickseed
Cornus alba	Siberian dogwood, white dogwood
Cornus kousa  var. chinensis	Chinese dogwood
Cornus mas	Cornelian dogwood , Cornelian cherry
Corylus avellana  'Contorta'	contorted European Filbert, Harry Lauder's walking stick, corkscrew hazel
Cosmos bipinnatus	cosmos, Mexican aster
Cotinus coggygria	smoke bush
Cotoneaster dammeri	bearberry cotoneaster
Crocus vernus	Dutch crocus, crocus
Daphne cneorum	rose daphne, garland flower, rock daphne
Delphinium elatum	delphinium, perennial larkspur
Deutzia gracilis	slender deutzia
Dianthus gratianopolitanus	cheddar pink
Echinacea purpurea	coneflower, echinacea, purple coneflower
Erica carnea	winter heather
Euonymus alatus	burning bush, winged euonymus, winged burning bush
Euonymus fortunei  cvs.	wintercreeper, winter creeper
Fagus sylvatica	European beech
Festuca ovina	sheep fescue, fine fescue
Fraxinus pennsylvanica	green ash
Geranium sanguineum	bloody cranesbill
Ginkgo biloba	maidenhair tree, ginkgo
Gleditsia triacanthos  f. inermis	thornless honey locust
Hamamelis virginiana	American witch hazel
Hedera helix	English ivy
Helictotrichon sempervirens	blue oat grass
Hemerocallis (incl. hybrids & cvs.)	daylily
Hosta  (incl. cvs.)	hosta, plantain lily
Hydrangea petiolaris	climbing hydrangea
Ilex x meserveae  'Blue Prince'	Blue Prince blue holly
Ilex x meserveae  'Centennial Girl'	Centennial Girl holly
Impatiens walleriana	impatiens
Iris x germanica	German iris, tall bearded iris
Iris pseudacorus	yellow flag iris
Iris sibirica	Siberian iris
Juniperus chinensis  'Kaizuka'	Hollywood juniper
Juniperus horizontalis (incl. cvs.)	creeping juniper, horizontal juniper
Kalmia latifolia	mountain laurel
Laburnum x watereri	golden chain tree
Lamium maculatum	spotted deadnettle, dead nettle
Lamprocapnos spectabilis  ( syn. Dicentra )	bleeding heart
Larix decidua	European larch
Lavandula angustifolia	English lavender
Lemna minor	common duckweed
Liatris spicata	blazing star, liatris
Lilium  cvs. (Asiatic)	Asiatic hybrid lily
Liriodendron tulipifera	tulip tree, yellow poplar
Lobularia maritima	sweet alyssum, alyssum
Lonicera x brownii  'Dropmore Scarlet'	scarlet trumpet honeysuckle
Magnolia stellata	star magnolia
Mahonia aquifolium  ( syn. Berberis )	Oregon grape
Malus floribunda	Japanese flowering crabapple
Matteuccia struthiopteris	ostrich fern
Metasequoia glyptostroboides	dawn redwood
Miscanthus sinensis	maiden grass
Narcissus  'King Alfred'	King Alfred daffodil
Nicotiana alata	flowering tobacco
Nymphaea  (incl. hybrids)	water lily
Pachysandra terminalis	Japanese spurge
Papaver orientale	oriental poppy
Parthenocissus tricuspidata	Boston ivy
Pennisetum alopecuroides	fountain grass
Petunia x hybrida	petunia , Supertunia mini
Phalaris arundinacea	reed canary grass, ribbon grass
Philadelphus x virginalis	virginal mock orange
Phlox paniculata	summer phlox, border phlox, common phlox
Phlox subulata	creeping phlox, moss phlox
Picea abies	Norway spruce
Picea omorika	Serbian spruce
Picea pungens  f. glauca	Colorado blue spruce, Colorado spruce
Pieris japonica	lily-of-the-valley shrub
Pinus mugo	mugo pine, Swiss mountain pine
Pinus nigra	black pine, Austrian pine
Pinus sylvestris	Scots pine
Populus tremuloides	trembling aspen , white poplar
Potentilla fruticosa  ( syn. Dasiphora )	potentilla, cinquefoil
Primula denticulata	drumstick primrose
Quercus palustris	pin oak
Quercus rubra	red oak
Rhododendron  'Coral Bells'	pink hose in hose azalea, Kurume evergreen azalea
Rhus typhina	staghorn sumac
Rudbeckia fulgida	black-eyed Susan
Salix babylonica  var. pekinensis 'Tortuosa'	corkscrew willow
Salix discolor	native willow, pussy willow
Sedum  'Lynda Windsor'	purple autumn stonecrop
Sorbus aucuparia	European mountain ash
Spiraea x bumalda  'Dart's Red'	Dart's red spirea
Stachys byzantina  'Big Ears'	woolly betony, giant lamb's ears
Symphoricarpos albus	snowberry
Syringa vulgaris	common lilac
Tagetes patula	French marigold
Taxus x media	yew
Thuja occidentalis  'Fastigiata'	pyramidal cedar
Thymus pseudolanuginosus	woolly thyme
Tilia cordata	little leaf linden , small-leaved lime
Tsuga canadensis	eastern hemlock, Canada hemlock
Tulipa (incl. cvs.)	tulip
Veronica spicata	veronica, speedwell
Viburnum x burkwoodii	Burkwood viburnum
Vinca minor	periwinkle , creeping myrtle
Viola x wittrockiana	pansy