| Common Name |
Scientific Name |
Growth Habit |
| Aarons Beard | Hypericum calycinum | Ground Covers |
| Acuba | Acuba japonica | Shrubs |
| Adam's Needle | Yucca filamentosa | Shrubs |
| African Lily | Agapanthus | Perennials |
| Agarita | Berberis trifoliolata | Shrubs |
| Ageratum | Ageratum | Annuals |
| Allegheny Serviceberry | Amelanchier laevis | Trees |
| Allegheny Spurge | Pachysandra procumbens | Ground Covers |
| Aloe | Aloe | Perennials |
| Alyssum | Alyssum | Annuals |
| Amaryllis | Amaryllis | Bulbs |
| American Bittersweet | Celastrus scandens | Vines |
| American Elder | Sambucus canadensis | Shrubs |
| American Holly | Ilex opaca | Trees |
| American Plum | Prunus americana | Shrubs |
| American Wisteria | Wisteria frutescens | Vines |
| Angel's Trumpet | Brugmansia | Annuals |
| Anise | Pimpinella anisum | Annuals |
| Anise Hyssop | Agastache foeniculum | Perennials |
| Anisetree | Illicium | Shrubs |
| Annual Periwinkle | Catharanthus alba rosea | Annuals |
| Annual Vinca | Catharanthus rosea | Annuals |
| Anthony Waterer Spirea | Spiraea x bumalda | Shrubs |
| Aquipernyi Holly | Ilex x aquipernyi | Trees |
| Arizona Ash | Fraxinus velutina | Trees |
| Arrowwood Viburnum | Viburnum dentatum | Shrubs |
| Asian Forget-Me-Not | Myosotis alpestris | Biennials |
| Asiatic Jasmine | Trachelospermum asiaticum | Ground Covers |
| Asparagus | Asparagus officinalis | Perennials |
| Aster | Aster | Perennials |
| Astilbe | Astilbe | Perennials |
| Australian Fuchsia | Correa pulchella | Shrubs |
| Austrian Pine | Pinus nigra | Trees |
| Autumn Crocus | Colchicum autumnale | Bulbs |
| Autumn Olive | Elaeagnus umbellatus | Shrubs |
| Autumn Sage | Salvia greggii | Shrubs |
| Baby's Breath | Gypsophila | Perennials |
| Bald Cypress | Taxodium distichum | Trees |
| Baltic Ivy | Hedera helix baltica | Vines |
| Bamboo | Bambusa | Ornamental Grasses |
| Banana Shrub | Michelia fuscata | Shrubs |
| Barberry | Berberis | Shrubs |
| Barometer Bush | Leucophyllum | Shrubs |
| Barrenwort | Epimedium | Ground Covers |
| Basil | Ocimum basilicum | Annuals |
| Basket of Gold | Aurinia saxatilis | Perennials |
| Bearberry | Arctostaphylos uva-ursi | Ground Covers |
| Bearberry Cotoneaster | Cotoneaster dammeri | Shrubs |
| Beargrass | Nolina | Perennials |
| Beautyberry | Callicarpa americana | Shrubs |
| Beautybush | Kolkwitzia amabilis | Shrubs |
| Bee Balm | Monarda didyma | Perennials |
| Begonia | Begonia | Annuals |
| Bergenia | Bergenia | Annuals |
| Betty Bland Rose | Rosa 'Betty Bland' | Shrubs |
| Big Bluestem | Andropogon gerardii | Ornamental Grasses |
| Big Sagebrush | Artemisia tridentata | Perennials |
| Bigleaf Goldenray | Ligularia dentata | Perennials |
| Bishop's Weed | Aegopodium podagaria | Ground Covers |
| Bittersweet | Celastrus | Vines |
| Black Bugbane | Cimicifuga racemosa | Perennials |
| Black Eyed Susan | Rudbeckia hirta | Perennials |
| Black Locust | Robinia pseudoacacia | Trees |
| Blackfoot | Melampodium | Perennials |
| Blackhaw Viburnum | Viburnum prunifolium | Shrubs |
| Blacksamson Echinacea | Echinacea angustifolia | Perennials |
| Blazing Star | Liatris | Perennials |
| Bleeding Heart | Dicentra spectabilis | Perennials |
| Blue Fescue | Festuca glauca | Ornamental Grasses |
| Blue Mist Shrub | Caryopteris clandonensis | Shrubs |
| Blue Oat Grass | Helictotrichon sempervirens | Ornamental Grasses |
| Bluebell | Endymion non-scriptus | Bulbs |
| Bluebonnet | Lupinus texensis | Annuals |
| Bluemink | Ageratum houstonianum | Annuals |
| Bluestem Joe-Pye-Weed | Eupatorium purpureum | Perennials |
| Bog Rosemary | Andromeda polifolia | Shrubs |
| Borage | Borage officinalis | Annuals |
| Bottlebrush Buckeye | Aesculus parviflora | Shrubs |
| Bottlebrush Grass | Hystrix patula | Ornamental Grasses |
| Boxwood | Buxus | Shrubs |
| Bridalwreath Spirea | Spiraea prunifolia | Shrubs |
| Broom | Cytisus | Shrubs |
| Brush Cherry | Syzygium paniculatum | Trees |
| Buckthorn | Rhamnus | Shrubs |
| Buffaloberry | Sheperdia argentea | Shrubs |
| Bugleweed | Ajuga reptans | Ground Covers |
| Bugloss | Anchusa | Perennials |
| Butter and Eggs | Linaria vulgaris | Perennials |
| Buttercup | Ranunculus | Perennials |
| Butterfly Bush | Buddleia davidii | Shrubs |
| Butterfly Weed | Asclepias tuberosa | Perennials |
| Cactus | Cactaceae | Perennials |
| Calamint | Calamintha | Perennials |
| California Fuchsia | Zauschneria californica | Perennials |
| California Poppy | Eschscholzia californica | Annuals |
| California Sweetshrub | Calycanthus occidentalis | Shrubs |
| California Wax Myrtle | Myrica californica | Trees |
| Calla Lily | Zantedeschia aethiopica | Perennials |
| Camassia | Camassia leichtlini | Bulbs |
| Canada Hemlock | Tsuga canadensis | Trees |
| Canna Lily | Canna x generalis | Bulbs |
| Cape Honeysuckle | Tecomaria capensis | Vines |
| Caragana Maximowicz | Caragana maximowicziana | Shrubs |
| Cardinal Flower | Lobelia cardinalis | Perennials |
| Carnation | Dianthus caryophyllus | Perennials |
| Carolina Cherry Laurel | Prunus caroliniana | Shrubs |
| Carolina Jessamine | Gelsemium sempervirens | Vines |
| Carolina Silverbell | Halesia carolina | Shrubs |
| Cast-Iron Plant | Aspidistra lurida | Perennials |
| Catalina Ironwood | Lyonothamnus floribundus | Trees |
| Catnip | Nepeta cataria | Perennials |
| Cedar Sage | Salvia roemeriana | Herbaceous Perennials |
| Century Plant | Agave americana | Perennials |
| Cherokee Rose | Rosa laevigata | Vines |
| Cherry Laurel | Prunus laurocerasus | Shrubs |
| Chinaberry Tree | Melia azedarach | Trees |
| Chinese Fringe Tree | Chionanthus retusus | Trees |
| Chinese Holly | Ilex cornuta | Shrubs |
| Chinese Juniper | Juniperus chinensis | Shrubs |
| Chinese Paper Birch | Betula albo-sinensis | Trees |
| Christmas Fern | Polystichum arcostichoides | Ferns |
| Christmas Rose | Helleborus niger | Perennials |
| Cinnamon Fern | Osmunda cinnamomea | Ferns |
| Cinquefoil | Potentilla | Perennials |
| Clematis | Clematis | Vines |
| Clump Bamboo | Fargesia | Ornamental Grasses |
| Coast Leucothoe | Leucothoe axillaris | Shrubs |
| Cock's Comb | Celosia | Annuals |
| Colchicum | Colchicum speciosum | Bulbs |
| Colorado Blue Spruce | Picea pungens | Trees |
| Columbine | Aquilegia | Perennials |
| Common Boxwood | Buxus sempervirens | Shrubs |
| Common Buckthorn | Rhamnus cathartica | Shrubs |
| Common Flowering Quince | Chaenomeles speciosa | Trees |
| Common Juniper | Juniperus communis | Shrubs |
| Common Lantana | Lantana camara | Shrubs |
| Common Lilac | Syringa vulgaris | Shrubs |
| Common Periwinkle | Vinca minor | Ground Covers |
| Common Sassafras | Sassafras albidurn | Trees |
| Common Speedwell | Veronica officinalis | Perennials |
| Common Sweetshrub | Calycanthus floridus | Shrubs |
| Common Tansy | Tanacetum vulgare | Perennials |
| Common Witchhazel | Hamamelis virginiana | Shrubs |
| Common Yarrow | Achillea millefolium | Perennials |
| Common Zinnia | Zinnia elegans | Annuals |
| Coneflower | Rudbeckia | Perennials |
| Coral Bells | Heuchera micrantha | Perennials |
| Coralberry | Symphoricarpos x chenaultii | Shrubs |
| Corkscrew Willow | Salix matsudana tortuosa | Trees |
| Cornflower | Centaurea cyanus | Annuals |
| Corydalis | Corydalis | Perennials |
| Cosmos | Cosmos bipinnatus | Annuals |
| Cotoneaster | Cotoneaster | Shrubs |
| Cranberry Cotoneaster | Cotoneaster apiculatus | Shrubs |
| Cranesbill Geranium | Geranium sanguineum | Perennials |
| Crape Myrtle | Lagerstroemia indica | Shrubs |
| Creeping Juniper | Juniperus horizontalis | Shrubs |
| Creeping Wintergreen | Gaultheria procumbens | Ground Covers |
| Crocosmia | Croscosmia | Perennials |
| Crocus | Crocus | Bulbs |
| Crown Imperial Fritillaria | Fritillaria imperialis | Bulbs |
| Currant | Ribes | Shrubs |
| Cyclamen | Cyclamen | Perennials |
| Daffodil | Narcissus | Bulbs |
| Daffodil Garlic | Allium neapolitanum | Bulbs |
| Dahlia | Dahlia | Herbaceous Perennials |
| Dame's Rocket | Hesperis matronalis | Perennials |
| Daphne | Daphne | Shrubs |
| Date Palm | Phoenix dactylifera | Trees |
| Dawn Redwood | Metasequoia glyptostroboides | Trees |
| Delphinium | Delphinium | Perennials |
| Dense Blazing Star | Liatris spicata | Perennials |
| Deodar Cedar | Cedrus deodara | Trees |
| Desert Willow | Chilopsis linearis | Shrubs |
| Deutzia | Deutzia | Shrubs |
| Devil's Walking Stick | Aralia spinosa | Shrubs |
| Dill | Anethum graveolens | Annuals |
| Doublefile Viburnum | Viburnum plicatum tomentosurn | Shrubs |
| Douglas Fir | Pseudotsuga menziesii | Trees |
| Downy Serviceberry | Amelanchier arborea | Trees |
| Dracaena Palm | Cordyline australis | Trees |
| Drooping Leucothoe | Leucothoe fontanesiana | Shrubs |
| Drooping Sedge | Carex pendula | Ornamental Grasses |
| Dusty Miller | Centaurea cineraria | Annuals |
| Dwarf Alberta Spruce | Picea glauca 'Conica' | Trees |
| Dwarf Balsam Fir | Abies balsamea | Shrubs |
| Dwarf Chinese Holly | Ixex cornuta | Shrubs |
| Dwarf Mondo Grass | Ophiopogon japonicus | Ornamental Grasses |
| Dwarf Russian Almond | Prunus tenella | Shrubs |
| Dwarf Yaupon | Ilex vomitoria | Shrubs |
| Eastern Red Cedar | Juniperus virginiana | Trees |
| Eastern White Pine | Pinus strobus | Trees |
| Edible Fig | Ficus carica | Trees |
| Elephant Ear | Colocasia esculenta | Bulbs |
| English Hawthorn | Crataegus laevigata | Trees |
| English Holly | Ilex aquifolium | Shrubs |
| European Ash | Fraxinus excelsior | Trees |
| European Beech | Fagus sylvatica | Trees |
| European Fan Palm | Chamaerops humilis | Shrubs |
| European Ginger | Asarum europaeum | Perennials |
| European Privet | Ligustrum vulgare | Shrubs |
| European White Birch | Betula pendula | Trees |
| Evergreen Candytuft | Iberis sempervirens | Perennials |
| Evergreen Sumac | Rhus virens | Shrubs |
| False Cypress | Chamaecyparis obtusa | Trees |
| False Indigo | Baptisia australis | Perennials |
| Feather Reed Grass | Calamagrostis acutiflora | Ornamental Grasses |
| Fernleaf Yarrow | Achillea filipendulina | Perennials |
| Feverfew | Chrysanthemum parthenium | Perennials |
| Fig | Ficus | Small Trees |
| Fir | Abies | Trees |
| Firethorn | Pyracantha 'M. Roemer' | Shrubs |
| Flame Acanthus | Anisacanthus wrightii | Perennials |
| Flameleaf Sumac | Rhus lanceolata | Small Trees |
| Flowering Dogwood | Cornus florida | Trees |
| Flowering Tobacco | Nicotiana alata | Annuals |
| Foam Flower | Tiarella cordifolia | Perennials |
| Forget-Me-Not | Myosotis | Perennials |
| Forsythia | Forsythia | Shrubs |
| Fothergilla | Fothergilla | Shrubs |
| Fountain Grass | Pennisetum alopecuroides | Ornamental Grasses |
| Four O'Clocks | Mirabilis jalapa | Herbaceous Perennials |
| Foxglove | Digitalis | Perennials |
| Fragrant Mimosa | Mimosa borealis | Shrubs |
| Fragrant Sumac | Rhus aromatica | Shrubs |
| French Marigold | Tagetes patula | Annuals |
| Fringed Bleeding Heart | Dicentra eximia | Perennials |
| Fritillary | Fritillaria | Bulbs |
| Gaillardia | Gaillardia pulchella | Annuals |
| Garden Sage | Salvia officinalis | Perennials |
| Gardenia | Gardenia | Shrubs |
| Gas Plant | Dictamus alba | Perennials |
| Geranium | Pelargonium | Annuals |
| Gerbera Daisy | Gerbera jamesonii | Herbaceous Perennials |
| Germander | Teucrium | Shrubs |
| Giant Reed | Arundo donax | Ornamental Grasses |
| Ginkgo | Ginkgo biloba | Trees |
| Gladiolus | Gladiolus | Bulbs |
| Globe Candytuft | Iberis umbellata | Annuals |
| Glory Lily | Gloriosa superba | Perennials |
| Glossy Abelia | Abelia x grandiflora | Shrubs |
| Golden Bamboo | Phyllostachys aurea | Ornamental Grasses |
| Goldenrain Tree | Koelreuteria paniculata | Trees |
| Goldenrod | Solidago | Perennials |
| Goldust Plant | Aucuba japonica | Shrubs |
| Gordonia | Gordonia lisianthus | Trees |
| Grape Hyacinth | Muscari | Bulbs |
| Gray Rock Cress | Arabis caucasica | Perennials |
| Green Ash | Fraxinus pennsylvanica | Trees |
| Groundcherry | Prunus fruticosa | Shrubs |
| Haidee Rose | Rosa 'Haidee' | Shrubs |
| Hakonechloa | Hakonechloa macra | Ornamental Grasses |
| Hard Rush | Juncus inflexus | Ornamental Grasses |
| Hardy Geranium | Geranium macrorrhizum | Perennials |
| Harlequin Glorybower | Clerodendrum fargesii | Shrubs |
| Hawthorn | Crataegus | Trees |
| Hayscented Fern | Dennstaedtia punctilobula | Ferns |
| Hazelnut | Corylus | Shrubs |
| Heartleaf Bergenia | Bergenia cordifolia | Perennials |
| Heath | Erica | Shrubs |
| Heather | Calluna vulgaris | Shrubs |
| Heavenly Bamboo | Nandina domestica | Shrubs |
| Hedgehog Thistle | Pediocactus | Perennials |
| Heliotrope | Heliotropium arborescens | Annuals |
| Hellebore | Helleborus | Perennials |
| Hens and Chicks | Sempervivum | Perennials |
| Heritage Birch | Betula nigra 'Heritage' | Trees |
| Highbush Cranberry | Viburnum opulus | Shrubs |
| Himalayan Birch | Betula jacquemontii | Trees |
| Himalayan Dogwood | Cornus capitata | Trees |
| Hispaniola Palmetto | Sabal blackburniana | Shrubs |
| Holly Fern | Cyrtomium falcatum | Ferns |
| Holly Osmanthus | Osmanthus heterophyllus | Shrubs |
| Honey Bush | Melianthus major | Shrubs |
| Honey Locust | Gleditsia triacanthos | Trees |
| Honeysuckle | Lonicera | Vines |
| Horehound | Marrubium vulgare | Perennials |
| Horseradish | Armoracia rusticana | Perennials |
| Hyacinth | Hyacinthus orientalis | Bulbs |
| Hyssop | Hyssopus officinalis | Perennials |
| Indian Grass | Sorghastrum nutans | Ornamental Grasses |
| Inkberry Holly | Ilex glabra | Shrubs |
| Iris | Iris | Perennials |
| Jack-in-the-pulpit | Arisaema triphylum | Perennials |
| Jacob's Ladder | Polemonium caeruleum | Perennials |
| Japanese Anemone | Anemone x hybrida | Perennials |
| Japanese arealia | Arelia sieboldii | Shrubs |
| Japanese Barberry | Berberis thunbergii | Shrubs |
| Japanese Black Pine | Pinus thunbergiana | Trees |
| Japanese Blood Grass | Imperata cylindrica | Ornamental Grasses |
| Japanese Cedar | Cryptomeria japonica | Trees |
| Japanese Falsecypress | Chamaecyparis pisifera | Trees |
| Japanese Flowering Cherry | Prunus serrulata | Trees |
| Japanese Flowering Quince | Chaenomeles japonica | Shrubs |
| Japanese Holly | Ilex crenata | Shrubs |
| Japanese Kerria | Kerria japonica | Shrubs |
| Japanese Maple | Acer palmatum | Trees |
| Japanese Pieris | Pieris japonica | Shrubs |
| Japanese Plum Yew | Cephalotaxus harringtonia | Shrubs |
| Japanese Red Pine | Pinus densiflora | Trees |
| Japanese Sedge | Carex | Ornamental Grasses |
| Japanese Silver Grass | Miscanthus sinensis | Ornamental Grasses |
| Japanese Skimmia | Skimmia japonica | Shrubs |
| Japanese Spirea | Spiraea japonica | Shrubs |
| Japanese Sweet Flag | Acorus gramineus | Ornamental Grasses |
| Japanese Tree Lilac | Syringa reticulata | Shrubs |
| Japanese Wisteria | Wisteria floribunda | Vines |
| Jasmine | Jasminum | Shrubs |
| Jerusalem Cherry | Solanum pseudocapsicum | Shrubs |
| Jerusalem Sage | Phlomis | Perennials |
| John T. Morris Holly | Ilex x 'John T. Morris' | Shrubs |
| Judd Viburnum | Viburnum x juddii | Shrubs |
| Juniper | Juniperus | Shrubs |
| Katsura Tree | Cercidiphyllum japonicum | Trees |
| Korean Barberry | Berberis koreana | Shrubs |
| Koreanspice Viburnum | Viburnum carlesii | Shrubs |
| Kousa Dogwood | Cornus kousa | Trees |
| Lady Fern | Athyrium filix-femina | Ferns |
| Ladys' Mantle | Alchemilla | Perennials |
| Lamb's Ear | Stachys byzantina | Perennials |
| Lanceleaf Coreopsis | Coreopsis lanceolata | Perennials |
| Large Blue June Grass | Koeleria glauca | Ornamental Grasses |
| Large Periwinkle | Vinca major | Ground Covers |
| Larkspur | Consolida ambigua | Annuals |
| Late Lilac | Syringa villosa | Shrubs |
| Lavender | Lavandula | Perennials |
| Lavender Cotton | Santolina chamaecyparissus | Perennials |
| Lead Plant | Amorpha canescens | Shrubs |
| Leatherleaf Mahonia | Mahonia bealei | Shrubs |
| Leatherleaf Viburnum | Viburnum rhytidophyllum | Shrubs |
| Lemon Balm | Melissa officinalis | Perennials |
| Lenten Rose | Helleborus orientalis | Herbaceous Perennials |
| Leucothoe | Leucothoe | Shrubs |
| Leyland Cypress | Cupressocyparis x leylandii | Trees |
| Lily Leek | Allium ostrowskianum | Bulbs |
| Lily of the Nile | Agapanthus africanus | Perennials |
| Lily of the Valley | Convallaria majalis | Ground Covers |
| Lilyturf | Liriope | Ground Covers |
| Little Bluestem | Schizachyrium scoparium | Ornamental Grasses |
| Littleleaf Boxwood | Buxus microphylla | Shrubs |
| Lobelia | Lobelia | Annuals |
| Lungwort | Pulmonaria | Perennials |
| Lupine | Lupinus | Perennials |
| Lydia Morris Holly | Ilex x 'Lydia Morris' | Shrubs |
| Lyme Grass | Leymus arenarius glaucous | Ornamental Grasses |
| Maltese Cross | Lychnis chalcedonica | Perennials |
| Marginal Wood Fern | Dryopteris marginalis | Ferns |
| Marigold | Tagetes | Annuals |
| Marjoram | Origanum majorana | Perennials |
| Matilija Poppy | Romneya coulteri | Perennials |
| May Apple | Podophyllum | Perennials |
| Mayweed | Matricaria | Annuals |
| Meadow Rue | Thalictrum | Perennials |
| Meadow Sage | Salvia nemorosa | Perennials |
| Mealy Blue Sage | Salvia farinacea | Herbaceous Perennials |
| Memorial Rose | Rosa wichuraiana | Shrubs |
| Mescal Bean | Sophora secundiflora | Small Trees |
| Mexican Blue Palm | Erythea armata | Trees |
| Mexican Buckeye | Ungnadia speciosa | Shrubs |
| Mexican Bush Sage | Salvia leucantha | Perennials |
| Mexican Mint Marigold | Tagetes lucida | Perennials |
| Mexican Orange | Choisya ternata | Shrubs |
| Mexican Oregano | Poliomintha longifolia | Shrubs |
| Mexican Silktassle | Garrya lindheimeri | Shrubs |
| Mimosa | Albizia julibrissin | Trees |
| Mint | Mentha | Perennials |
| Mirror Shrub | Coprosma repens | Shrubs |
| Mist Flower | Eupatorium coelestinurn | Perennials |
| Mock Orange | Philadelphus | Shrubs |
| Money Plant | Lunaria annua | Biennials |
| Monkshood | Aconitum | Perennials |
| Morning Glory | Ipomoea | Annuals |
| Mountain Laurel | Kalmia latifolia | Shrubs |
| Mountain Pieris | Pieris floribunda | Shrubs |
| Mugo Pine | Pinus mugo | Shrubs |
| Mullein | Verbascum thapsus | Perennials |
| Nandina | Nandina | Shrubs |
| Nasturtium | Tropaeolum majus | Annuals |
| Neopolitan Cyclamen | Cyclamen hederifolium | Bulbs |
| New York Fern | Thelyptens noveboracensis | Ferns |
| New Zealand Flax | Phormium tenax | Perennials |
| Nightshade | Solanum | Vines |
| Northern Bayberry | Myrica pennsylvanica | Shrubs |
| Northern Sea Oats | Chasmanthium latifolium | Ornamental Grasses |
| Norway Maple | Acer platanoides | Trees |
| Norway Spruce | Picea abies | Trees |
| Obedient Plant | Physostegia virginiana | Perennials |
| Oleander | Nerium oleander | Shrubs |
| Olga Rhododendron | Rhododendron 'Olga Mezitt' | Shrubs |
| Oregano | Origanum vulgare | Perennials |
| Oregon Grape Holly | Mahonia aquifolium | Shrubs |
| Oriental Fountain Grass | Pennisetum orientale | Ornamental Grasses |
| Oriental Poppy | Papaver orientale | Perennials |
| Ornamental Chives | Allium | Bulbs |
| Osier Dogwood | Cornus stolonifera | Shrubs |
| Ostrich Fern | Matteuccia struthiopteris | Ferns |
| Pachysandra | Pachysandra terminalis | Ground Covers |
| Pacific Island Silver Grass | Miscanthus floridulis | Ornamental Grasses |
| Pampas Grass | Cortaderia selloana | Ornamental Grasses |
| Paper Birch | Betula papyrifera | Trees |
| Paperbark Maple | Acer griseurn | Trees |
| Parry's Beargrass | Nolina parryi | Perennials |
| Parsley | Petroselinum crispum | Annuals |
| Patrinia | Patrinia scabiosifolia | Perennials |
| Pawpaw | Asimina triloba | Trees |
| Pekinese Caragana | Caragana pekinensis | Shrubs |
| Pentas | Pentas | Annuals |
| Peony | Paeonia | Perennials |
| Persimmon | Diospyros virginiana | Trees |
| Pincushin Flower | Scabiosa caucasica | Perennials |
| Pine | Pinus | Trees |
| Pitch Pine | Pinus rigida | Trees |
| PJM Rhododendron | Rhododendron 'PJM' | Shrubs |
| Plains Blackfoot | Melampodium leucanthum | Perennials |
| Plum Yew | Cephalotaxus | Shrubs |
| Plumbago | Ceratostigma plumbaginoides | Ground Covers |
| Plume Poppy | Macleaya cordata | Perennials |
| Ponytail Palm | Beaucarnea recurvata | Trees |
| Poppy | Papaver rhoeas | Annuals |
| Pot Marigold | Calendula officinalis | Annuals |
| Prickly Pear | Opuntia | Perennials |
| Pride of Madeira | Echium fastuosum | Perennials |
| Primrose | Primula | Perennials |
| Privet | Ligustrum | Shrubs |
| Purple Coneflower | Echinacea purpurea | Perennials |
| Purple Foxglove | Digitalis purpurea | Perennials |
| Purple Moor Grass | Molinia caerulea | Ornamental Grasses |
| Purple Rock Cress | Aubrieta deltoidea | Perennials |
| Pygmy Caragana | Caragana aurantiaca | Shrubs |
| Pyrenees Cotoneaster | Cotoneaster congestus | Shrubs |
| Ravenna Grass | Erianthus ravennae | Ornamental Grasses |
| Red Chokeberry | Aronia arbutifolia | Shrubs |
| Red Elderberry | Sambucus racemosa | Shrubs |
| Red Hot Poker | Kniphofia uvaria | Perennials |
| Red Maple | Acer rubrum | Trees |
| Red Osier Dogwood | Cornus sericea | Shrubs |
| Red Pine | Pinus resinosa | Trees |
| Red Twigged Dogwood | Cornus alba | Shrubs |
| Redvein Enkianthus | Enkianthus campanulatus | Shrubs |
| Redwood Sorrel | Oxalis oregana | Ground Covers |
| Rhododendron | Rhododendron roseum | Shrubs |
| Rhubarb | Rheum rhabarbarum | Perennials |
| Ribbon Grass | Phalaris arundinaceae | Ornamental Grasses |
| River Birch | Betula nigra | Trees |
| Rock Cress | Arabis | Perennials |
| Rocket Ligularia | Ligularia 'The Rocket' | Perennials |
| Rockspray Cotoneaster | Cotoneaster horizontalis | Shrubs |
| Rocky Mountain Juniper | Juniperus scopulorum | Shrubs |
| Rodgers Flower | Rodgersia | Perennials |
| Rose Champion | Lychnis coronaria | Perennials |
| Rose of Sharon | Hibiscus syriacus | Shrubs |
| Rose Periwinkle | Vinca rosea | Perennials |
| Rosemary | Rosmarinus officinalis | Perennials |
| Roughleaf Dogwood | Cornus drummondii | Small Trees |
| Royal Fern | Osmunda regalis | Ferns |
| Ruby Horsechestnut | Aesculus x carnea | Trees |
| Rue | Ruta graveolens | Perennials |
| Rue Anemone | Anemonella thalictroides | Perennials |
| Rugosa Rose | Rosa rugosa | Shrubs |
| Russian Caragana | Caragana frutex | Shrubs |
| Russian Cypress | Microbiota decussata | Shrubs |
| Russian Olive | Elaeagnus angustifolia | Small Trees |
| Russian Sage | Perovskia atriplicifolia | Perennials |
| Sage | Salvia | Perennials |
| Santolina | Santolina | Ground Covers |
| Saucer Magnolia | Magnolia x soulangiana | Shrubs |
| Savin Juniper | Juniperus sabina | Shrubs |
| Savory | Satureja montana | Perennials |
| Scarlet Firethorn | Pyracantha coccinea | Shrubs |
| Scarlet Sage | Salvia splendens | Annuals |
| Scotch Broom | Cytisus scoparius | Shrubs |
| Scotch Pine | Pinus sylvestris | Trees |
| Sea Buckthorn | Hippophae rhamnoides | Shrubs |
| Sea Thrift | Armeria maritima | Perennials |
| Sedge | Scirpus lacustris | Ornamental Grasses |
| Sensitive Fern | Onoclea sensibilis | Ferns |
| Serbian Spruce | Picea omorika | Trees |
| Shadbush | Amelanchier canadensis | Trees |
| Shasta Daisy | Chrysanthemum maximum | Herbaceous Perennials |
| Shiso | Perilla frutescens | Annuals |
| Showy Forsythia | Forsythia x intermedia | Shrubs |
| Shrubby Cinquefoil | Potentilla fruticosa | Shrubs |
| Shrubby Germander | Teucrium fruticans | Shrubs |
| Siberian Bugloss | Brunnera macrophylla | Perennials |
| Siberian Peashrub | Caragana arborescens | Shrubs |
| Siberian Salt Tree | Halimodendron halodendron | Shrubs |
| Siberian Squill | Scilla siberica | Bulbs |
| Sierra Madre Lobelia | Lobelia laxiflora | Annuals |
| Silver Maple | Acer saccharinum | Trees |
| Silver Mound | Artemisia schmidtiana | Perennials |
| Silver Ragwort | Senecio cineraria | Annuals |
| Silverberry | Elaeagnus commutata | Shrubs |
| Silverthorn | Elaeagnus pungens | Shrubs |
| Singleseed Juniper | Juniperus squamata | Shrubs |
| Skunk Cabbage | Symplocarpos foetidus | Perennials |
| Skunkbush Sumac | Rhus trilobata | Shrubs |
| Small Globe Thistle | Echinops ritro | Perennials |
| Smokebush | Cotinus coggygria | Shrubs |
| Snapdragon | Antirrhinum majus | Annuals |
| Sneezeweed | Helenium autumnale | Perennials |
| Snow-in-Summer | Cerastium | Perennials |
| Snow-on-the-Mountain | Euphorbia marginata | Annuals |
| Snowberry | Symphoricarpos albus | Shrubs |
| Snowbush Ceanothus | Ceanothus velutinus | Shrubs |
| Snowdrops | Galanthus nivalis | Bulbs |
| Snowflake | Leucojum | Bulbs |
| Soapbark Tree | Quillaja saponaria | Trees |
| Soapwort | Saponaria officinalis | Perennials |
| Society Garlic | Tulbaghia violacea | Bulbs |
| Soft Rush | Juncus effusus | Ornamental Grasses |
| Sotol | Dasylirion | Perennials |
| Sourwood | Oxydendrum arboreum | Trees |
| Southern Magnolia | Magnolia grandiflora | Trees |
| Spearmint | Mentha spicata | Ground Covers |
| Speckled Spur Flower | Plectranthus ciliatus | Annuals |
| Speedwell | Veronica | Perennials |
| Spicebush | Lindera benzoin | Shrubs |
| Spider Flower | Cleome hasslerana | Annuals |
| Spiderwort | Tradescantia | Perennials |
| Spirea | Spiraea | Shrubs |
| Spotted Dead Nettle | Lamium maculatum | Ground Covers |
| Spruce | Picea | Trees |
| Spurge | Euphorbia | Perennials |
| St. John's Wort | Hypericum prolificum | Shrubs |
| Star Jasmine | Trachelospermum jasminoides | Vines |
| Star of Persia | Allium christophii | Bulbs |
| Statice | Limonium latifolium | Perennials |
| Stella de Oro Daylily | Hemmerocallis 'Stella de Oro' | Perennials |
| Stock | Matthiola | Annuals |
| Stokes' Aster | Stokesia laevis | Perennials |
| Strawflower | Helichrysum | Annuals |
| Striped Maple | Acer pensylvanicum | Trees |
| Sugar Bush | Rhus ovata | Shrubs |
| Sugar Maple | Acer saccharum | Trees |
| Summer Snowflake | Leucojum aestivum | Bulbs |
| Sunflower | Helianthus | Perennials |
| Swamp Milkweed | Asclepias incarnata | Perennials |
| Sweet Alyssum | Lobularia maritima | Annuals |
| Sweet Box | Sarcoccoca hookeriana | Shrubs |
| Sweet Hakea | Hakea suaveolens | Shrubs |
| Sweet Mock Orange | Philadelphus coronarius | Shrubs |
| Sweet Pea | Lathyrus odoratus | Annuals |
| Sweet Pepperbush | Clethra alnifolia | Shrubs |
| Sweet William | Dianthus barbatus | Annuals |
| Sweet Woodruff | Galium odoratum | Ground Covers |
| Sweetgum | Liquidambar styraciflua | Trees |
| Switch Grass | Panicum virgatum | Ornamental Grasses |
| Sword Fern | Nephrolepis | Ferns |
| Tarragon | Artemisia dracunculus | Perennials |
| Texas Buckeye | Acsculus arguta | Shrubs |
| Texas Persimmon | Diospyros texana | Small Trees |
| Thorny Blackberry | Rubus | Shrubs |
| Threadleaf Coreopsis | Coreopsis verticillata | Perennials |
| Thyme | Thymus | Perennials |
| Tickseed | Coreopsis | Perennials |
| Toad Lily | Tricyrtis hirta | Perennials |
| Trillium | Trillium | Perennials |
| Trout Lily | Erythronium | Perennials |
| True Forget-Me-Not | Myosotis scorpioides | Annuals |
| Trumpet Honeysuckle | Lonicera sempervirens | Vines |
| Trumpetvine | Bignonia capreolata | Vines |
| Tulip Tree | Liriodendron tulipifera | Trees |
| Variegated Oat Grass | Arrhenatherum elatius | Ornamental Grasses |
| Verbena | Verbena | Annuals |
| Viburnum | Viburnum | Shrubs |
| Violets | Viola | Perennials |
| Virginia Bluebells | Mertensia virginica | Perennials |
| Virginia Rose | Rosa virginiana | Shrubs |
| Virginia Sweetspire | Itea virginica | Shrubs |
| Wall Germander | Teucrium chamaedrys | Perennials |
| Wallflower | Cheiranthus | Annuals |
| Wax Begonia | Begonia semperflorens | Annuals |
| Wax Mallow | Malvaviscus arboreus | Shrubs |
| Wax Myrtle | Myrica cerifera | Shrubs |
| Weeping Lantana | Lantana montevidensis | Annuals |
| Weeping Love Grass | Eragrostus curvula | Ornamental Grasses |
| Weigela | Weigela florida | Shrubs |
| White Boltonia | Boltonia asteroides | Perennials |
| White Snakeroot | Eupatorium rugosum | Perennials |
| White Spruce | Picea glauca | Trees |
| Wild Ginger | Asarum canadense | Perennials |
| Wild Indigo | Baptisia tinctoria | Herbaceous Perennials |
| Willowleaf Cotoneaster | Cotoneaster salicifolius | Shrubs |
| Windmill Palm | Trachycarpus fortunei | Trees |
| Winter Aconite | Erianthus hyemalis | Bulbs |
| Winter Jasmine | Jasminum nudiflorum | Vines |
| Winterberry Holly | Ilex verticillata | Shrubs |
| Wood Fern | Dryopteris | Ferns |
| Wood Sorrel | Oxalis | Bulbs |
| Woodland Forget-Me-Not | Myosotis sylvatica | Annuals |
| Wormwood | Artemisia | Herbaceous Perennials |
| Yarrow | Achillea | Perennials |
| Yellow Birch | Betula lutea | Trees |
| Yellow Foxglove | Digitalis grandiflora | Perennials |
| Yellow Wax-Bells | Kirengeshoma palmata | Perennials |
| Yucca | Yucca | Perennials |
| Zexmenia | Zexmenia hispida | Ground Covers |
| Zinnia | Zinnia | Annuals |
