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Aaron's Beard (Hypericum calycinum)
Abyssinian Gladiolus (Gladiolus murielae)
Adam's Needle (Yucca filamentosa)
Adzuki Bean (Vigna angularis)
African Corn Lily (Ixia maculata)
African Daisy (Dimorphotheca sinuata)
African Iris (Dietes bicolor)
African Marigold (Tagetes erecta)
Alabama Azalea (Rhododendron alabamense)
Algerian Iris (Iris unguicularis)
Allegheny Blackberry (Rubus allegheniensis)
Allegheny Monkeyflower (Mimulus ringens)
Allegheny Serviceberry (Amelanchier laevis)
Allegheny Spurge (Pachysandra procumbens)
Almond (Prunus dulcis)
Alpine Aster (Aster alpinus)
Alpine Barrenwort (Epimedium alpinum)
Alpine Clematis (Clematis alpina)
Alpine Forget-Me-Not (Myosotis asiatica)
Alpine Geranium (Erodium reichardii)
Alpine Sea Holly (Eryngium alpinum)
Alpine Strawberry (Fragaria vesca)
Alsike Clover (Trifolium hybridum)
Amaranth (Amaranthus caudatus)
Amaryllis (Hippeastrum × hybridum)
American Alumroot (Heuchera americana)
American Basketflower (Centaurea americana)
American Basswood (Tilia americana)
American Beachgrass (Ammophila breviligulata)
American Beautyberry (Callicarpa americana)
American Black Currant (Ribes americanum)
American Cranberrybush (Viburnum opulus var. americanum)
American Elm (Ulmus americana)
American Fly Honeysuckle (Lonicera canadensis)
American Germander (Teucrium canadense)
American Hazelnut (Corylus americana)
American Holly (Ilex opaca)
American Lotus (Nelumbo lutea)
American Pasqueflower (Pulsatilla patens)
American Persimmon (Diospyros virginiana)
American Plum (Prunus americana)
American Snowbell (Styrax americanus)
American Snowberry (Symphoricarpos albus)
American Spikenard (Aralia racemosa)
American Vetch (Vicia americana)
American Wisteria (Wisteria frutescens)
Amethyst Sea Holly (Eryngium amethystinum)
Anacacho Orchid Tree (Bauhinia lunarioides)
Anemone Clematis (Clematis montana)
Angel's Tears Daffodil (Narcissus triandrus)
Angel's Trumpet (Brugmansia × candida)
Angelita Daisy (Tetraneuris acaulis)
Angelonia (Angelonia angustifolia)
Anise (Pimpinella anisum)
Anise Hyssop (Agastache foeniculum)
Anise-Scented Sage (Salvia guaranitica)
Annual Baby's Breath (Gypsophila elegans)
Annual Candytuft (Iberis umbellata)
Annual Mallow (Lavatera trimestris)
Annual Phlox (Phlox drummondii)
Annual Wild Rice (Zizania aquatica)
Antelope Horns (Asclepias asperula)
Apache Beggarticks (Bidens ferulifolia)
Apache Plume (Fallugia paradoxa)
Appalachian Mountain Mint (Pycnanthemum flexuosum)
Appalachian Sedge (Carex appalachica)
Apple (Malus domestica)
Apricot (Prunus armeniaca)
Aquatic Milkweed (Asclepias perennis)
Arabian Jasmine (Jasminum sambac)
Arkansas Bluestar (Amsonia hubrichtii)
Armand Clematis (Clematis armandii)
Armenian Cranesbill (Geranium psilostemon)
Aromatic Aster (Symphyotrichum oblongifolium)
Aronia (Aronia melanocarpa)
Arrowleaf Balsamroot (Balsamorhiza sagittata)
Arrowleaf Clover (Trifolium vesiculosum)
Arrowwood Viburnum (Viburnum dentatum)
Arroyo Lupine (Lupinus succulentus)
Arroyo Willow (Salix lasiolepis)
Artichoke (Cynara cardunculus var. scolymus)
Arugula (Eruca vesicaria)
Ashy Sunflower (Helianthus mollis)
Asian Pear (Pyrus pyrifolia)
Asiatic Jasmine (Trachelospermum asiaticum)
Asparagus (Asparagus officinalis)
Astilbe (Astilbe × arendsii)
Atamasco Lily (Zephyranthes atamasca)
Atlantic Pigeonwings (Clitoria mariana)
Auricula (Primula auricula)
Austrian Briar (Rosa foetida)
Autumn Crocus (Colchicum autumnale)
Autumn Fern (Dryopteris erythrosora)
Autumn Moor Grass (Sesleria autumnalis)
Autumn Sage (Salvia greggii)
Avocado (Persea americana)
Aztec Lily (Sprekelia formosissima)
Azure Monkshood (Aconitum carmichaelii)
Azure Sage (Salvia azurea)
Baboon Flower (Babiana stricta)
Baby Blue Eyes (Nemophila menziesii)
Baby Sage (Salvia microphylla)
Baby Sun Rose (Aptenia cordifolia)
Baby's Breath (Gypsophila paniculata)
Baby's Tears (Soleirolia soleirolii)
Bachelor's Button (Centaurea cyanus)
Bacopa (Chaenostoma cordatum)
Bahiagrass (Paspalum notatum)
Baja Fairy Duster (Calliandra californica)
Baldwin's Ironweed (Vernonia baldwinii)
Balloon Flower (Platycodon grandiflorus)
Banana Shrub (Magnolia figo)
Barbara's Buttons (Marshallia grandiflora)
Barestem Biscuitroot (Lomatium nudicaule)
Barley (Hordeum vulgare)
Barren Strawberry (Waldsteinia fragarioides)
Barrenwort (Epimedium grandiflorum)
Basil (Ocimum basilicum)
Basket of Gold (Aurinia saxatilis)
Bat-Faced Cuphea (Cuphea llavea)
Bay Leaf (Laurus nobilis)
Beach Morning Glory (Ipomoea imperati)
Beach Pea (Lathyrus japonicus)
Beach Plum (Prunus maritima)
Beach Sagewort (Artemisia pycnocephala)
Beach Spider Lily (Hymenocallis littoralis)
Beach Strawberry (Fragaria chiloensis)
Beach Sunflower (Helianthus debilis)
Beach Wormwood (Artemisia stelleriana)
Beaked Hazelnut (Corylus cornuta)
Bear's Breeches (Acanthus mollis)
Bearberry Cotoneaster (Cotoneaster dammeri)
Bearded Iris (Iris germanica)
Beardlip Penstemon (Penstemon barbatus)
Beargrass (Xerophyllum tenax)
Beautybush (Kolkwitzia amabilis)
Bee Balm (Monarda didyma)
Beet (Beta vulgaris)
Bell Heather (Erica cinerea)
Bell Pepper (Capsicum annuum)
Bells of Ireland (Moluccella laevis)
Bermudagrass (Cynodon dactylon)
Berseem Clover (Trifolium alexandrinum)
Bethlehem Sage (Pulmonaria saccharata)
Betony (Stachys officinalis)
Bieberstein's Crocus (Crocus speciosus)
Big Betony (Stachys macrantha)
Big Blue Lilyturf (Liriope muscari)
Big Bluestem (Andropogon gerardii)
Big-Leaved Aster (Eurybia macrophylla)
Bigberry Manzanita (Arctostaphylos glauca)
Bigelow's Tansyaster (Machaeranthera bigelovii)
Bigleaf Hydrangea (Hydrangea macrophylla)
Bigleaf Maple (Acer macrophyllum)
Bigroot Geranium (Geranium macrorrhizum)
Billy Buttons (Craspedia globosa)
Birchleaf Spirea (Spiraea betulifolia)
Bird of Paradise (Strelitzia reginae)
Bird of Paradise Bush (Caesalpinia gilliesii)
Bird's Eye Gilia (Gilia tricolor)
Bird's-Foot Trefoil (Lotus corniculatus)
Bird's-Foot Violet (Viola pedata)
Bishop's Cap (Mitella diphylla)
Bishop's Flower (Ammi majus)
Bitter Cherry (Prunus emarginata)
Bitter Melon (Momordica charantia)
Bitterroot (Lewisia rediviva)
Black Cherry (Prunus serotina)
Black Cohosh (Actaea racemosa)
Black Currant (Ribes nigrum)
Black Dalea (Dalea frutescens)
Black Hawthorn (Crataegus douglasii)
Black Huckleberry (Gaylussacia baccata)
Black Locust (Robinia pseudoacacia)
Black Mondo Grass (Ophiopogon planiscapus)
Black Oats (Avena strigosa)
Black Pepper (Piper nigrum)
Black Sage (Salvia mellifera)
Black Titi (Cliftonia monophylla)
Black Tupelo (Nyssa sylvatica)
Black Willow (Salix nigra)
Black-Eyed Pea (Vigna unguiculata)
Black-Eyed Susan (Rudbeckia hirta)
Black-Eyed Susan Vine (Thunbergia alata)
Blackberry (Rubus fruticosus)
Blackberry Lily (Belamcanda chinensis)
Blackfoot Daisy (Melampodium leucanthum)
Blackhaw (Viburnum prunifolium)
Bladderpod (Cleome isomeris)
Blanket Flower (Gaillardia × grandiflora)
Bleeding Heart (Lamprocapnos spectabilis)
Bleeding Heart Vine (Clerodendrum thomsoniae)
Blood Lily (Scadoxus multiflorus)
Blood-Red Trumpet Vine (Distictis buccinatoria)
Bloodroot (Sanguinaria canadensis)
Bloody Cranesbill (Geranium sanguineum)
Blue Chalksticks (Senecio mandraliscae)
Blue Corydalis (Corydalis flexuosa)
Blue Daze (Evolvulus glomeratus)
Blue Elderberry (Sambucus nigra ssp. cerulea)
Blue Fescue (Festuca arvernensis)
Blue Flag (Iris versicolor)
Blue Flax (Linum perenne)
Blue Globe Onion (Allium caeruleum)
Blue Grama (Bouteloua gracilis)
Blue Lace Flower (Trachymene coerulea)
Blue Marguerite (Felicia amelloides)
Blue Mistflower (Conoclinium coelestinum)
Blue Moor Grass (Sesleria caerulea)
Blue Mountain Prairie Clover (Dalea ornata)
Blue Palo Verde (Parkinsonia florida)
Blue Passionflower (Passiflora caerulea)
Blue Penstemon (Penstemon cyaneus)
Blue Porterweed (Stachytarpheta jamaicensis)
Blue Potato Bush (Lycianthes rantonnetii)
Blue Ridge St. John's Wort (Hypericum buckleii)
Blue Sedge (Carex flacca)
Blue Spruce Stonecrop (Sedum reflexum)
Blue Star Creeper (Isotoma fluviatilis)
Blue Throatwort (Trachelium caeruleum)
Blue Treasure Honeyberry (Lonicera caerulea)
Blue Vervain (Verbena hastata)
Blue Wild Indigo (Baptisia australis)
Blue Wood Sedge (Carex flaccosperma)
Blue-Eyed Grass (Sisyrinchium angustifolium)
Blue-Eyed Mary (Omphalodes verna)
Blue-Stemmed Goldenrod (Solidago caesia)
Bluebeard (Caryopteris × clandonensis)
Blueberry (Vaccinium corymbosum)
Bluedicks (Dichelostemma capitatum)
Bluestar (Amsonia tabernaemontana)
Bluestem Beardtongue (Penstemon cyanocaulis)
Bluets (Houstonia caerulea)
Bodnant Viburnum (Viburnum × bodnantense)
Bog Sage (Salvia uliginosa)
Bok Choy (Brassica rapa subsp. chinensis)
Bokhara Tulip (Tulipa linifolia)
Boneset (Eupatorium perfoliatum)
Borage (Borago officinalis)
Border Forsythia (Forsythia × intermedia)
Boston Fern (Nephrolepis exaltata)
Bottle Gentian (Gentiana andrewsii)
Bottlebrush Buckeye (Aesculus parviflora)
Bougainvillea (Bougainvillea spectabilis)
Bowden Lily (Nerine bowdenii)
Bower Vine (Pandorea jasminoides)
Box Huckleberry (Gaylussacia brachycera)
Bradbury's Beebalm (Monarda bradburiana)
Brass Buttons (Leptinella squalida)
Brazilian Jasmine (Mandevilla sanderi)
Breadseed Poppy (Papaver somniferum)
Bridal Wreath Spirea (Spiraea prunifolia)
Bristleleaf Sedge (Carex eburnea)
Bristly Locust (Robinia hispida)
Brittlebush (Encelia farinosa)
Broad Beech Fern (Phegopteris hexagonoptera)
Broadbeard Beardtongue (Penstemon angustifolius)
Broadleaf Arrowhead (Sagittaria latifolia)
Broadleaf Cattail (Typha latifolia)
Broadleaf Grape Hyacinth (Muscari latifolium)
Broadleaf Lupine (Lupinus latifolius)
Broadleaf Milkweed (Asclepias latifolia)
Broadleaf Stonecrop (Sedum spathulifolium)
Broccoli (Brassica oleracea var. italica)
Broccoli Rabe (Brassica rapa subsp. sylvestris)
Brown's Honeysuckle (Lonicera × brownii)
Brown-Eyed Susan (Rudbeckia triloba)
Brussels Sprout (Brassica oleracea var. gemmifera)
Buckbrush (Ceanothus cuneatus)
Buckwheat (Fagopyrum esculentum)
Buffalograss (Bouteloua dactyloides)
Bugle Lily (Watsonia borbonica)
Bugleweed (Ajuga reptans)
Bumald Spirea (Spiraea × bumalda)
Bunchberry (Cornus canadensis)
Burdock (Arctium lappa)
Burkwood Viburnum (Viburnum × burkwoodii)
Bush Allamanda (Allamanda schottii)
Bush Anemone (Carpenteria californica)
Bush Clover (Lespedeza thunbergii)
Bush Morning Glory (Ipomoea leptophylla)
Bush Sunflower (Simsia calva)
Bush Violet (Browallia speciosa)
Bushy Aster (Symphyotrichum dumosum)
Butter Daisy (Melampodium divaricatum)
Buttercup Winter Hazel (Corylopsis pauciflora)
Butterfly Bush (Buddleja davidii)
Butterfly Flower (Schizanthus pinnatus)
Butterfly Mariposa Lily (Calochortus venustus)
Butterfly Pea (Clitoria ternatea)
Butterfly Weed (Asclepias tuberosa)
Butternut (Juglans cinerea)
Butternut Squash (Cucurbita moschata)
Buttonbush (Cephalanthus occidentalis)
Byzantine Gladiolus (Gladiolus communis)
Cabbage (Brassica oleracea var. capitata)
Cabbage Palmetto (Sabal palmetto)
Cabbage Rose (Rosa × centifolia)
Calamondin (Citrus x microcarpa)
Calendula (Calendula officinalis)
Calibrachoa (Calibrachoa × hybrida)
Calico Aster (Symphyotrichum lateriflorum)
California Bee Plant (Scrophularia californica)
California Blue-Eyed Grass (Sisyrinchium bellum)
California Bluebell (Phacelia campanularia)
California Brittlebush (Encelia californica)
California Buckwheat (Eriogonum fasciculatum)
California Goldenrod (Solidago californica)
California Gray Rush (Juncus patens)
California Lilac (Ceanothus thyrsiflorus)
California Milkweed (Asclepias californica)
California Oatgrass (Danthonia californica)
California Pipevine (Aristolochia californica)
California Poppy (Eschscholzia californica)
California Redbud (Cercis orbiculata)
California Wild Rose (Rosa californica)
California Yerba Santa (Eriodictyon californicum)
Calla Lily (Zantedeschia aethiopica)
Cambridge Cranesbill (Geranium × cantabrigiense)
Canada Anemone (Anemone canadensis)
Canada Goldenrod (Solidago canadensis)
Canada Lily (Lilium canadense)
Canada Milkvetch (Astragalus canadensis)
Canada Violet (Viola canadensis)
Canary Creeper (Tropaeolum peregrinum)
Candelabra Aloe (Aloe arborescens)
Candelabra Primrose (Primula bulleyana)
Canna (Canna × generalis)
Canterbury Bells (Campanula medium)
Cape Gooseberry (Physalis peruviana)
Cape Honeysuckle (Tecoma capensis)
Cape Plumbago (Plumbago auriculata)
Caraway (Carum carvi)
Caraway Thyme (Thymus herba-barona)
Cardamom (Elettaria cardamomum)
Cardinal Climber (Ipomoea × multifida)
Cardinal Flower (Lobelia cardinalis)
Cardinal Penstemon (Penstemon cardinalis)
Cardoon (Cynara cardunculus)
Cardwell's Penstemon (Penstemon cardwellii)
Carmel Ceanothus (Ceanothus griseus)
Carolina Allspice (Calycanthus floridus)
Carolina Jessamine (Gelsemium sempervirens)
Carolina Larkspur (Delphinium carolinianum)
Carolina Laurel Cherry (Prunus caroliniana)
Carolina Lupine (Thermopsis villosa)
Carolina Phlox (Phlox carolina)
Carolina Ponyfoot (Dichondra carolinensis)
Carolina Rhododendron (Rhododendron minus)
Carolina Rose (Rosa carolina)
Carolina Silverbell (Halesia carolina)
Carpathian Bellflower (Campanula carpatica)
Carrot (Daucus carota)
Cascade Oregon Grape (Mahonia nervosa)
Cashew (Anacardium occidentale)
Cast Iron Plant (Aspidistra elatior)
Catawba Rhododendron (Rhododendron catawbiense)
Catclaw Acacia (Senegalia greggii)
Catmint (Nepeta × faassenii)
Catnip (Nepeta cataria)
Caucasian Scabious (Scabiosa caucasica)
Cauliflower (Brassica oleracea var. botrytis)
Cedar Sage (Salvia roemeriana)
Cedros Island Verbena (Verbena lilacina)
Celandine Poppy (Stylophorum diphyllum)
Celeriac (Apium graveolens var. rapaceum)
Celery (Apium graveolens)
Centipede Grass (Eremochloa ophiuroides)
Chaparral Currant (Ribes malvaceum)
Chard (Beta vulgaris var. cicla)
Chaste Tree (Vitex agnus-castus)
Checker Lily (Fritillaria affinis)
Checkerbloom (Sidalcea malviflora)
Cheddar Pink (Dianthus gratianopolitanus)
Chenault Coralberry (Symphoricarpos × chenaultii)
Chenille Plant (Acalypha hispida)
Cherokee Rose (Rosa laevigata)
Cherokee Sedge (Carex cherokeensis)
Cherry (Prunus avium)
Chervil (Anthriscus cerefolium)
Chestnut (Castanea mollissima)
Chia (Salvia columbariae)
Chickasaw Plum (Prunus angustifolia)
Chickpea (Cicer arietinum)
Chickpea Milkvetch (Astragalus cicer)
Chicory (Cichorium intybus)
Chilean Avens (Geum quellyon)
Chilean Glory Flower (Eccremocarpus scaber)
Chilean Jasmine (Mandevilla laxa)
Chili (Capsicum frutescens)
Chili Pepper (Capsicum chinense)
Chimney Bellflower (Campanula pyramidalis)
China Aster (Callistephus chinensis)
China Pink (Dianthus chinensis)
China Rose (Rosa chinensis)
Chincherinchee (Ornithogalum thyrsoides)
Chinese Astilbe (Astilbe chinensis)
Chinese Azalea (Rhododendron molle)
Chinese Delphinium (Delphinium grandiflorum)
Chinese Forget-Me-Not (Cynoglossum amabile)
Chinese Fringe Flower (Loropetalum chinense)
Chinese Fringe Tree (Chionanthus retusus)
Chinese Globeflower (Trollius chinensis)
Chinese Ground Orchid (Bletilla striata)
Chinese Hibiscus (Hibiscus rosa-sinensis)
Chinese Houses (Collinsia heterophylla)
Chinese Juniper (Juniperus chinensis)
Chinese Lantern (Physalis alkekengi)
Chinese Plumbago (Ceratostigma willmottianum)
Chinese Snowball (Viburnum macrocephalum)
Chinese Stonecrop (Sedum tetractinum)
Chinese Tea (Camellia sinensis)
Chinese Trumpet Creeper (Campsis grandiflora)
Chinquapin (Castanea pumila)
Chives (Allium schoenoprasum)
Chocolate Cosmos (Cosmos atrosanguineus)
Chocolate Flower (Berlandiera lyrata)
Chokecherry (Prunus virginiana)
Christmas Fern (Polystichum acrostichoides)
Christmas Rose (Helleborus niger)
Chuparosa (Justicia californica)
Cigar Plant (Cuphea ignea)
Cineraria (Pericallis hybrida)
Cinnamon (Cinnamomum verum)
Citron (Citrus medica)
Claret Cup Cactus (Echinocereus triglochidiatus)
Clary Sage (Salvia sclarea)
Clasping Coneflower (Dracopis amplexicaulis)
Clasping Milkweed (Asclepias amplexicaulis)
Cleveland Sage (Salvia clevelandii)
Cliff Stonecrop (Sedum glaucophyllum)
Climbing Beans (Phaseolus vulgaris)
Climbing Hydrangea (Hydrangea anomala subsp. petiolaris)
Clivia (Clivia miniata)
Cloth of Gold Crocus (Crocus angustifolius)
Clove (Syzygium aromaticum)
Clove Pinks (Dianthus caryophyllus)
Clustered Bellflower (Campanula glomerata)
Clustered Field Sedge (Carex praegracilis)
Clustered Mountain Mint (Pycnanthemum muticum)
Coast Buckwheat (Eriogonum latifolium)
Coastal Azalea (Rhododendron atlanticum)
Coastal Plain Joe Pye Weed (Eutrochium dubium)
Coastal Verbena (Glandularia maritima)
Cobaea Beardtongue (Penstemon cobaea)
Cobweb Houseleek (Sempervivum arachnoideum)
Cobweb Thistle (Cirsium occidentale)
Cockscomb (Celosia argentea)
Cockspur Coral Tree (Erythrina crista-galli)
Cockspur Hawthorn (Crataegus crus-galli)
Coffeeberry (Rhamnus californica)
Collard Greens (Brassica oleracea var. viridis)
Colonial Bentgrass (Agrostis capillaris)
Colorado Four O'Clock (Mirabilis multiflora)
Columbia Lily (Lilium columbianum)
Columbine Meadow Rue (Thalictrum aquilegifolium)
Comfrey (Symphytum officinale)
Common Blanketflower (Gaillardia aristata)
Common Blue Violet (Viola sororia)
Common Carpetgrass (Axonopus fissifolius)
Common Evening Primrose (Oenothera biennis)
Common Grape Hyacinth (Muscari botryoides)
Common Hackberry (Celtis occidentalis)
Common Jasmine (Jasminum officinale)
Common Lilac (Syringa vulgaris)
Common Madia (Madia elegans)
Common Manzanita (Arctostaphylos manzanita)
Common Milkweed (Asclepias syriaca)
Common Ninebark (Physocarpus opulifolius)
Common Peony (Paeonia officinalis)
Common Periwinkle (Vinca minor)
Common Phacelia (Phacelia distans)
Common Pricklyash (Zanthoxylum americanum)
Common Selfheal (Prunella vulgaris)
Common Vetch (Vicia sativa)
Common Witch Hazel (Hamamelis virginiana)
Common Yarrow (Achillea millefolium)
Compass Plant (Silphium laciniatum)
Concord Grape (Vitis labrusca)
Confederate Rose (Hibiscus mutabilis)
Coontie (Zamia pumila)
Copper Iris (Iris fulva)
Copper Lily (Habranthus tubispathus)
Coppery Ice Plant (Malephora crocea)
Coral Bean (Erythrina herbacea)
Coral Bells (Heuchera sanguinea)
Coral Honeysuckle (Lonicera sempervirens)
Coral Vine (Antigonon leptopus)
Coralberry (Symphoricarpos orbiculatus)
Coriander (Coriandrum sativum)
Corn (Zea mays)
Corn Cockle (Agrostemma githago)
Cornelian Cherry (Cornus mas)
Corsican Hellebore (Helleborus argutifolius)
Corsican Mint (Mentha requienii)
Corsican Sandwort (Arenaria balearica)
Corsican Stonecrop (Sedum dasyphyllum)
Cosmos (Cosmos bipinnatus)
Cottage Pink (Dianthus plumarius)
Cows Clover (Trifolium wormskioldii)
Cowslip (Primula veris)
Coyote Brush (Baccharis pilularis)
Coyote Mint (Monardella villosa)
Cranberry (Vaccinium macrocarpon)
Cranberry Cotoneaster (Cotoneaster apiculatus)
Crape Jasmine (Tabernaemontana divaricata)
Crape Myrtle (Lagerstroemia indica)
Cream Cups (Platystemon californicus)
Creeping Baby's Breath (Gypsophila repens)
Creeping Bentgrass (Agrostis stolonifera)
Creeping Blueberry (Vaccinium crassifolium)
Creeping Broadleaf Sedge (Carex siderosticta)
Creeping Comfrey (Symphytum grandiflorum)
Creeping Cotoneaster (Cotoneaster adpressus)
Creeping Jacob's Ladder (Polemonium reptans)
Creeping Juniper (Juniperus horizontalis)
Creeping Lilyturf (Liriope spicata)
Creeping Mahonia (Mahonia repens)
Creeping Mazus (Mazus miquelii)
Creeping Myoporum (Myoporum parvifolium)
Creeping Phlox (Phlox subulata)
Creeping Raspberry (Rubus hayata-koidzumii)
Creeping Speedwell (Veronica repens)
Creeping Thyme (Thymus praecox)
Creeping Wire Vine (Muehlenbeckia axillaris)
Creeping Woodland Phlox (Phlox stolonifera)
Creeping Zinnia (Sanvitalia procumbens)
Creosote Bush (Larrea tridentata)
Crested Iris (Iris cristata)
Cretan Tulip (Tulipa saxatilis)
Crimson Clover (Trifolium incarnatum)
Crocus Tulip (Tulipa humilis)
Crookedstem Aster (Symphyotrichum prenanthoides)
Crossvine (Bignonia capreolata)
Crown Imperial (Fritillaria imperialis)
Crown of Thorns (Euphorbia milii)
Crucifix Orchid (Epidendrum radicans)
Cucumber (Cucumis sativus)
Culver's Root (Veronicastrum virginicum)
Cumberland Azalea (Rhododendron cumberlandense)
Cumin (Cuminum cyminum)
Cup and Saucer Vine (Cobaea scandens)
Cup of Gold Vine (Solandra maxima)
Cup Plant (Silphium perfoliatum)
Cupflower (Nierembergia scoparia)
Cupid's Dart (Catananche caerulea)
Curlycup Gumweed (Grindelia squarrosa)
Cushion Buckwheat (Eriogonum ovalifolium)
Cushion Spurge (Euphorbia epithymoides)
Cutleaf Balsamroot (Balsamorhiza macrophylla)
Cutleaf Coneflower (Rudbeckia laciniata)
Cutleaf Stephanandra (Stephanandra incisa)
Cyclamineus Daffodil (Narcissus cyclamineus)
Cylindrical Blazing Star (Liatris cylindracea)
Cypress Vine (Ipomoea quamoclit)
Daffodil (Narcissus pseudonarcissus)
Dahlberg Daisy (Thymophylla tenuiloba)
Dahlia (Dahlia pinnata)
Dahoon Holly (Ilex cassine)
Dahurian Rhododendron (Rhododendron dauricum)
Daikon (Raphanus sativus var. longipinnatus)
Dalmatian Bellflower (Campanula portenschlagiana)
Damask Rose (Rosa × damascena)
Damianita (Chrysactinia mexicana)
Damson Plum (Prunus domestica subsp. insititia)
Dancing Ladies Ginger (Globba winitii)
Dandelion (Taraxacum officinale)
Darley Dale Heath (Erica × darleyensis)
Davidson's Penstemon (Penstemon davidsonii)
Daylily (Hemerocallis fulva)
Deer Fern (Blechnum spicant)
Deerberry (Vaccinium stamineum)
Deerbrush (Ceanothus integerrimus)
Deergrass (Muhlenbergia rigens)
Deerweed (Lotus scoparius)
Delavay Osmanthus (Osmanthus delavayi)
Dense Blazing Star (Liatris spicata)
Desert Agave (Agave deserti)
Desert Globemallow (Sphaeralcea ambigua)
Desert Marigold (Baileya multiradiata)
Desert Milkweed (Asclepias erosa)
Desert Olive (Forestiera pubescens)
Desert Penstemon (Penstemon pseudospectabilis)
Desert Rose (Adenium obesum)
Desert Sand Verbena (Abronia villosa)
Desert Willow (Chilopsis linearis)
Desert Zinnia (Zinnia acerosa)
Devil's Trumpet (Datura metel)
Devil's Walking Stick (Aralia spinosa)
Dichondra (Dichondra micrantha)
Dill (Anethum graveolens)
Dixie Iris (Iris hexagona)
Dog Rose (Rosa canina)
Dogtooth Violet (Erythronium dens-canis)
Dotted Blazing Star (Liatris punctata)
Doublefile Viburnum (Viburnum plicatum)
Douglas Aster (Symphyotrichum subspicatum)
Douglas Iris (Iris douglasiana)
Douglas' Dustymaiden (Chaenactis douglasii)
Dove Tree (Davidia involucrata)
Downy Hawthorn (Crataegus mollis)
Downy Serviceberry (Amelanchier arborea)
Downy Skullcap (Scutellaria incana)
Downy Wood Mint (Blephilia ciliata)
Dropwort (Filipendula vulgaris)
Drummond's Aster (Symphyotrichum drummondii)
Drumstick Allium (Allium sphaerocephalon)
Drumstick Primrose (Primula denticulata)
Dusky Cranesbill (Geranium phaeum)
Dutch Crocus (Crocus vernus)
Dutch Iris (Iris × hollandica)
Dutchman's Breeches (Dicentra cucullaria)
Dwarf Bearded Iris (Iris pumila)
Dwarf Blazing Star (Liatris microcephala)
Dwarf Chinese Astilbe (Astilbe chinensis var. pumila)
Dwarf Cinquefoil (Potentilla canadensis)
Dwarf False Indigo (Amorpha nana)
Dwarf Flowering Almond (Prunus glandulosa)
Dwarf Fothergilla (Fothergilla gardenii)
Dwarf Goatsbeard (Aruncus aethusifolius)
Dwarf Goldenrod (Solidago sphacelata)
Dwarf Morning Glory (Convolvulus tricolor)
Dwarf Plumbago (Ceratostigma plumbaginoides)
Dwarf Rose (Rosa gymnocarpa)
Dwarf Solomon's Seal (Polygonatum humile)
Dwarf Sweetbox (Sarcococca hookeriana var. humilis)
Dwarf Violet Iris (Iris verna)
Dyer's Greenweed (Genista tinctoria)
Early Flowering Lilac (Syringa × hyacinthiflora)
Early Goldenrod (Solidago juncea)
Easter Lily (Lilium longiflorum)
Eastern Cottonwood (Populus deltoides)
Eastern Cyclamen (Cyclamen coum)
Eastern Prickly Pear (Opuntia humifusa)
Eastern Redbud (Cercis canadensis)
Eastern Sandcherry (Prunus pumila)
Edging Lobelia (Lobelia erinus)
Eggplant (Solanum melongena)
Egyptian Star Cluster (Pentas lanceolata)
Elderberry (Sambucus nigra)
Elegant Clarkia (Clarkia unguiculata)
Elephant Garlic (Allium ampeloprasum var. ampeloprasum)
Elmleaf Goldenrod (Solidago ulmifolia)
Endive (Cichorium endivia)
Endress's Cranesbill (Geranium endressii)
Engelmann's Daisy (Engelmannia peristenia)
English Bluebell (Hyacinthoides non-scripta)
English Daisy (Bellis perennis)
English Primrose (Primula vulgaris)
Epazote (Dysphania ambrosioides)
European Columbine (Aquilegia vulgaris)
European Wild Ginger (Asarum europaeum)
Evergreen Candytuft (Iberis sempervirens)
Evergreen Huckleberry (Vaccinium ovatum)
Fairy Duster (Calliandra eriophylla)
Fairy Primrose (Primula malacoides)
False Aster (Boltonia asteroides)
False Indigo Bush (Amorpha fruticosa)
False Lily Of The Valley (Maianthemum canadense)
Fan Columbine (Aquilegia flabellata)
Fan Flower (Scaevola aemula)
Farewell to Spring (Clarkia amoena)
Father Hugo's Rose (Rosa xanthina)
Fava Bean (Vicia faba)
Feather Dalea (Dalea formosa)
Fendler's Ceanothus (Ceanothus fendleri)
Fennel (Foeniculum vulgare)
Fenugreek (Trigonella foenum-graecum)
Fernleaf Biscuitroot (Lomatium dissectum)
Fernleaf Peony (Paeonia tenuifolia)
Fernleaf Phacelia (Phacelia bipinnatifida)
Fernleaf Yarrow (Achillea filipendulina)
Fetterbush (Lyonia lucida)
Feverfew (Tanacetum parthenium)
Fewflower Milkweed (Asclepias lanceolata)
Field Pussytoes (Antennaria neglecta)
Field Thistle (Cirsium discolor)
Fig (Ficus carica)
Fig-Leaved Hollyhock (Alcea ficifolia)
Finger Lime (Citrus australasica)
Fire Pink (Silene virginica)
Firebush (Hamelia patens)
Firecracker Bush (Bouvardia ternifolia)
Firecracker Flower (Crossandra infundibuliformis)
Firecracker Penstemon (Penstemon eatonii)
Firecracker Plant (Russelia equisetiformis)
Firespike (Odontonema cuspidatum)
Fireweed (Chamerion angustifolium)
Five Spot (Nemophila maculata)
Flame Acanthus (Anisacanthus quadrifidus var. wrightii)
Flame Azalea (Rhododendron calendulaceum)
Flame Vine (Pyrostegia venusta)
Flamingo Flower (Justicia carnea)
Flannel Bush (Fremontodendron californicum)
Flat Sea Holly (Eryngium planum)
Flat-Topped Aster (Doellingeria umbellata)
Flatwoods Plum (Prunus umbellata)
Flax (Linum usitatissimum)
Florida Flame Azalea (Rhododendron austrinum)
Florida Pearl Junebearing Strawberry (Fragaria x ananassa)
Floss Flower (Ageratum houstonianum)
Flowering Almond (Prunus triloba)
Flowering Dogwood (Cornus florida)
Flowering Maple (Abutilon × hybridum)
Flowering Quince (Chaenomeles speciosa)
Flowering Tobacco (Nicotiana alata)
Foamflower (Tiarella cordifolia)
Foothill Palo Verde (Parkinsonia microphylla)
Foothill Penstemon (Penstemon heterophyllus)
Foothill Sedge (Carex tumulicola)
Forget-Me-Not (Myosotis sylvatica)
Formosa Lily (Lilium formosanum)
Formosa Toad Lily (Tricyrtis formosana)
Fortnight Lily (Dietes iridioides)
Fortune's Rhododendron (Rhododendron fortunei)
Fosteriana Tulip (Tulipa fosteriana)
Fountain Butterfly Bush (Buddleja alternifolia)
Four O'Clock (Mirabilis jalapa)
Four-Nerve Daisy (Tetraneuris scaposa)
Fox Sedge (Carex vulpinoidea)
Foxglove (Digitalis purpurea)
Foxglove Beardtongue (Penstemon digitalis)
Foxtail Lily (Eremurus stenophyllus)
Foxtail Millet (Setaria italica)
Fragrant Hosta (Hosta plantaginea)
Fragrant Sumac (Rhus aromatica)
Fragrant Water Lily (Nymphaea odorata)
Frangipani (Plumeria rubra)
Franklin Tree (Franklinia alatamaha)
Freesia (Freesia × hybrida)
Fremont Cottonwood (Populus fremontii)
Fremont's Leather Flower (Clematis fremontii)
French Lavender (Lavandula dentata)
French Marigold (Tagetes patula)
French Rose (Rosa gallica)
Frikart's Aster (Aster × frikartii)
Fringe Tree (Chionanthus virginicus)
Fringecup (Tellima grandiflora)
Fringed Bleeding Heart (Dicentra eximia)
Fringed Bluestar (Amsonia ciliata)
Fringed Hibiscus (Hibiscus schizopetalus)
Fringed Poppy Mallow (Callirhoe digitata)
Fringed Redmaids (Calandrinia ciliata)
Fringed Sage (Artemisia frigida)
Frogfruit (Phyla nodiflora)
Frohnleiten Barrenwort (Epimedium × perralchicum)
Front Range Penstemon (Penstemon virens)
Frosted Mint (Poliomintha incana)
Frostweed (Verbesina virginica)
Fuchsia-Flowered Gooseberry (Ribes speciosum)
Fuzzy Deutzia (Deutzia scabra)
Fuzzytongue Penstemon (Penstemon eriantherus)
Garden Balsam (Impatiens balsamina)
Garden Lupine (Lupinus polyphyllus)
Garden Mum (Chrysanthemum × morifolium)
Garden Penstemon (Penstemon × gloxinioides)
Garden Phlox (Phlox paniculata)
Garden Spiderwort (Tradescantia × andersoniana)
Garden Verbena (Glandularia × hybrida)
Gardenia (Gardenia jasminoides)
Garland Chrysanthemum (Glebionis coronaria)
Garlic (Allium sativum)
Garlic Chives (Allium tuberosum)
Gaura (Oenothera lindheimeri)
Gazania (Gazania rigens)
Geiger Tree (Cordia sebestena)
Geneva Bugleweed (Ajuga genevensis)
Gentian Sage (Salvia patens)
Gentian Speedwell (Veronica gentianoides)
Georgia Blue Speedwell (Veronica peduncularis)
Geraldton Waxflower (Chamelaucium uncinatum)
Gerbera Daisy (Gerbera jamesonii)
German Catchfly (Lychnis viscaria)
German Chamomile (Matricaria chamomilla)
German Garlic (Allium senescens)
German Primrose (Primula obconica)
Giant Allium (Allium giganteum)
Giant Blazingstar (Mentzelia laevicaulis)
Giant Blue Eyed Mary (Collinsia grandiflora)
Giant Blue Iris (Iris giganticaerulea)
Giant Coneflower (Rudbeckia maxima)
Giant Crinum (Crinum asiaticum)
Giant Desert Candle (Eremurus robustus)
Giant Goldenrod (Solidago gigantea)
Giant Scabious (Cephalaria gigantea)
Giant Snowdrop (Galanthus elwesii)
Giant Sunflower (Helianthus giganteus)
Ginger (Zingiber officinale)
Glacier Lily (Erythronium grandiflorum)
Gladiolus (Gladiolus × gandavensis)
Globe Amaranth (Gomphrena globosa)
Globe Gilia (Gilia capitata)
Globe Thistle (Echinops ritro)
Globeflower (Trollius europeus)
Gloriosa Lily (Gloriosa superba)
Glory of the Snow (Chionodoxa forbesii)
Glossy Abelia (Abelia × grandiflora)
Goat's Rue (Tephrosia virginiana)
Goatsbeard (Aruncus dioicus)
Goji Berry (Lycium barbarum)
Gold Moss Sedum (Sedum acre)
Goldband Lily (Lilium auratum)
Golden Alexanders (Zizia aurea)
Golden Ball Leadtree (Leucaena retusa)
Golden Calla (Zantedeschia elliottiana)
Golden Canna (Canna flaccida)
Golden Clematis (Clematis tangutica)
Golden Columbine (Aquilegia chrysantha)
Golden Creeper (Ernodea littoralis)
Golden Currant (Ribes aureum)
Golden Dewdrop (Duranta erecta)
Golden Euryops (Euryops pectinatus)
Golden Flax (Linum flavum)
Golden Garlic (Allium moly)
Golden Globes (Lysimachia congestiflora)
Golden Lace (Patrinia scabiosifolia)
Golden Marguerite (Anthemis tinctoria)
Golden Prairie Clover (Dalea aurea)
Golden Ragwort (Packera aurea)
Golden Raspberry (Rubus idaeus)
Golden Shower Tree (Cassia fistula)
Golden Shrimp Plant (Pachystachys lutea)
Golden St. John's Wort (Hypericum frondosum)
Golden Star (Hypoxis hirsuta)
Golden Trumpet (Allamanda cathartica)
Golden Trumpet Tree (Handroanthus chrysotrichus)
Golden Yarrow (Eriophyllum confertiflorum)
Goldenchain Tree (Laburnum × watereri)
Goldfields (Lasthenia californica)
Goldflame Honeysuckle (Lonicera × heckrottii)
Goodding's Verbena (Glandularia gooddingii)
Goodding's Willow (Salix gooddingii)
Gooseberry (Ribes uva-crispa)
Gooseberryleaf Globemallow (Sphaeralcea grossulariifolia)
Gooseneck Loosestrife (Lysimachia clethroides)
Gopher Apple (Licania michauxii)
Grand Collomia (Collomia grandiflora)
Grape (Vitis vinifera)
Grape Hyacinth (Muscari armeniacum)
Grapefruit (Citrus x paradisi)
Grass-Leaved Goldenrod (Euthamia graminifolia)
Grassy-Leaved Sweet Flag (Acorus gramineus)
Gray Dogwood (Cornus racemosa)
Gray Globemallow (Sphaeralcea incana)
Gray Goldenrod (Solidago nemoralis)
Gray's Biscuitroot (Lomatium grayi)
Gray-Headed Coneflower (Ratibida pinnata)
Grayleaf Cranesbill (Geranium cinereum)
Great Bellflower (Campanula latifolia)
Great Blue Lobelia (Lobelia siphilitica)
Great Camas (Camassia leichtlinii)
Great Valley Gumweed (Grindelia camporum)
Great Valley Phacelia (Phacelia ciliata)
Great White Trillium (Trillium grandiflorum)
Greater Tickseed (Coreopsis major)
Greater Woodrush (Luzula sylvatica)
Grecian Windflower (Anemone blanda)
Green and Gold (Chrysogonum virginianum)
Green Antelopehorn (Asclepias viridis)
Green Bean (Phaseolus vulgaris)
Green Comet Milkweed (Asclepias viridiflora)
Green Hawthorn (Crataegus viridis)
Green Tea (Camellia sinensis var. sinensis)
Greenleaf Manzanita (Arctostaphylos patula)
Gregg's Mistflower (Conoclinium greggii)
Greigii Tulip (Tulipa greigii)
Ground Cherry (Physalis pruinosa)
Ground Juniper (Juniperus communis var. depressa)
Ground Morning Glory (Convolvulus sabatius)
Ground Plum (Astragalus crassicarpus)
Groundnut (Apios americana)
Groundsel Bush (Baccharis halimifolia)
Gulf Coast Penstemon (Penstemon tenuis)
Gum Rockrose (Cistus ladanifer)
Haageana Globe Amaranth (Gomphrena haageana)
Hairy Beardtongue (Penstemon hirsutus)
Hairy Goldenaster (Heterotheca villosa)
Hairy Manzanita (Arctostaphylos columbiana)
Hairy Mountain Mint (Pycnanthemum verticillatum var. pilosum)
Hairy Vetch (Vicia villosa)
Hairy Wood Mint (Blephilia hirsuta)
Halberd-Leaf Rosemallow (Hibiscus laevis)
Hard Fescue (Festuca brevipila)
Hardy Begonia (Begonia grandis)
Hardy Cyclamen (Cyclamen hederifolium)
Hardy Fuchsia (Fuchsia magellanica)
Hardy Ice Plant (Delosperma cooperi)
Hardy Kiwi (Actinidia arguta)
Hare's Ear (Bupleurum rotundifolium)
Harebell (Campanula rotundifolia)
Harlequin Flower (Sparaxis tricolor)
Harlequin Glorybower (Clerodendrum trichotomum)
Hartweg's Sundrops (Calylophus hartwegii)
Harvest Brodiaea (Brodiaea coronaria)
Hay-Scented Fern (Dennstaedtia punctilobula)
Hazelnut (Corylus avellana)
Heart-Leaved Aster (Symphyotrichum cordifolium)
Heart-Leaved Golden Alexanders (Zizia aptera)
Heartleaf Bergenia (Bergenia cordifolia)
Heartleaf Keckiella (Keckiella cordifolia)
Heartleaf Milkweed (Asclepias cordifolia)
Heartleaf Willow (Salix eriocephala)
Heath Aster (Symphyotrichum ericoides)
Heather (Calluna vulgaris)
Heavenly Blue Morning Glory (Ipomoea tricolor)
Heliotrope (Heliotropium arborescens)
Henderson's Shooting Star (Dodecatheon hendersonii)
Henry's Lily (Lilium henryi)
Hens And Chicks (Sempervivum tectorum)
Herald's Trumpet (Beaumontia grandiflora)
Hercules' Club (Zanthoxylum clava-herculis)
Higan Cherry (Prunus × subhirtella)
High Mallow (Malva sylvestris)
Himalayan Blue Poppy (Meconopsis betonicifolia)
Himalayan Cinquefoil (Potentilla atrosanguinea)
Himalayan Cranesbill (Geranium himalayense)
Himalayan Fleeceflower (Persicaria affinis)
Hoary Mountain Mint (Pycnanthemum incanum)
Hoary Tansyaster (Machaeranthera canescens)
Hoary Vervain (Verbena stricta)
Hollow Joe Pye Weed (Eutrochium fistulosum)
Hollyhock (Alcea rosea)
Hollyhock Mallow (Malva alcea)
Hollyleaf Cherry (Prunus ilicifolia)
Hollyleaf Redberry (Rhamnus ilicifolia)
Honesty (Lunaria annua)
Honey Locust (Gleditsia triacanthos)
Honey Mesquite (Prosopis glandulosa)
Honeysuckle Fuchsia (Fuchsia triphylla)
Honeywort (Cerinthe major)
Hong Kong Orchid Tree (Bauhinia × blakeana)
Hookedspur Violet (Viola adunca)
Hooker's Balsamroot (Balsamorhiza hookeri)
Hooker's Willow (Salix hookeriana)
Hoop Petticoat Daffodil (Narcissus bulbocodium)
Hops (Humulus lupulus)
Horned Violet (Viola cornuta)
Horseflyweed (Baptisia tinctoria)
Horseherb (Calyptocarpus vialis)
Horseradish (Armoracia rusticana)
Humboldt Lily (Lilium humboldtii)
Hummingbird Mint (Agastache cana)
Hummingbird Sage (Salvia spathacea)
Hummingbird Trumpet (Epilobium canum)
Hyacinth (Hyacinthus orientalis)
Hyacinth Bean (Lablab purpureus)
Hybrid Anemone (Anemone × hybrida)
Hybrid Bougainvillea (Bougainvillea × buttiana)
Hybrid Columbine (Aquilegia × hybrida)
Hybrid Delphinium (Delphinium elatum)
Hybrid Fuchsia (Fuchsia hybrida)
Hybrid Sage (Salvia × sylvestris)
Hybrid Stonecrop (Phedimus hybridus)
Hybrid Trumpet Creeper (Campsis × tagliabuana)
Hybrid Witch Hazel (Hamamelis × intermedia)
Hyssop (Hyssopus officinalis)
Hyssopleaf Boneset (Eupatorium hyssopifolium)
Ice Cream Bean (Inga edulis)
Iceland Poppy (Papaver nudicaule)
Idaho Blue-Eyed Grass (Sisyrinchium idahoense)
Idaho Fescue (Festuca idahoensis)
Ilima (Sida fallax)
Illinois Bundleflower (Desmanthus illinoensis)
Illinois Ticktrefoil (Desmodium illinoense)
Immortelle (Xeranthemum annuum)
Impatiens (Impatiens walleriana)
Indian Blanket (Gaillardia pulchella)
Indian Hawthorn (Rhaphiolepis indica)
Indian Hemp (Apocynum cannabinum)
Indian Pink (Spigelia marilandica)
Indian Plum (Oemleria cerasiformis)
Indian Shot (Canna indica)
Indiangrass (Sorghastrum nutans)
Inkberry (Ilex glabra)
Inland Ceanothus (Ceanothus herbaceus)
Inland Sea Oats (Chasmanthium latifolium)
Inside-Out Flower (Vancouveria hexandra)
Irish Moss (Sagina subulata)
Island Alumroot (Heuchera maxima)
Italian Bugloss (Anchusa azurea)
Italian Clematis (Clematis viticella)
Italian Jasmine (Jasminum humile)
Italian Ryegrass (Lolium perenne ssp. multiflorum)
Ithuriel's Spear (Triteleia laxa)
Ivy Geranium (Pelargonium peltatum)
Jacaranda (Jacaranda mimosifolia)
Jack-in-the-Pulpit (Arisaema triphyllum)
Jackman Clematis (Clematis × jackmanii)
Jacob's Ladder (Polemonium caeruleum)
Japanese Andromeda (Pieris japonica)
Japanese Anemone (Anemone hupehensis)
Japanese Apricot (Prunus mume)
Japanese Ardisia (Ardisia japonica)
Japanese Astilbe (Astilbe japonica)
Japanese Burnet (Sanguisorba obtusa)
Japanese Camellia (Camellia japonica)
Japanese Crape Myrtle (Lagerstroemia fauriei)
Japanese Flowering Cherry (Prunus serrulata)
Japanese Flowering Crabapple (Malus floribunda)
Japanese Forest Grass (Hakonechloa macra)
Japanese Garden Juniper (Juniperus procumbens)
Japanese Iris (Iris ensata)
Japanese Kerria (Kerria japonica)
Japanese Lily (Lilium speciosum)
Japanese Millet (Echinochloa esculenta)
Japanese Morning Glory (Ipomoea nil)
Japanese Pachysandra (Pachysandra terminalis)
Japanese Pagoda Tree (Styphnolobium japonicum)
Japanese Painted Fern (Athyrium niponicum)
Japanese Plum Yew (Cephalotaxus harringtonia)
Japanese Primrose (Primula japonica)
Japanese Quince (Chaenomeles japonica)
Japanese Sedge (Carex morrowii)
Japanese Spirea (Spiraea japonica)
Japanese Stewartia (Stewartia pseudocamellia)
Japanese Stonecrop (Sedum makinoi)
Japanese Tree Lilac (Syringa reticulata)
Japanese Zoysia (Zoysia japonica)
Jelly Bean Plant (Sedum × rubrotinctum)
Jerusalem Artichoke (Helianthus tuberosus)
Jerusalem Sage (Phlomis fruticosa)
Jewelweed (Impatiens capensis)
Joe Pye Weed (Eutrochium purpureum)
Johnny Jump Up (Viola tricolor)
Jonquil (Narcissus jonquilla)
Jostaberry (Ribes x culverwellii)
Judd Viburnum (Viburnum × juddii)
Jujube (Ziziphus jujuba)
Jungle Geranium (Ixora coccinea)
Kale (Brassica oleracea var. sabellica)
Kalm's St. John's Wort (Hypericum kalmianum)
Kamchatka Stonecrop (Sedum kamtschaticum)
Kangaroo Paw (Anigozanthos flavidus)
Kentucky Bluegrass (Poa pratensis)
Kentucky Wisteria (Wisteria macrostachya)
Key Lime (Citrus x aurantiifolia)
King Protea (Protea cynaroides)
King's Mantle (Thunbergia erecta)
King's Spear (Asphodeline lutea)
Kinnikinnick (Arctostaphylos uva-ursi)
Kiss-Me-Over-the-Garden-Gate (Polygonum orientale)
Kiwi (Actinidia deliciosa)
Kobus Magnolia (Magnolia kobus)
Kohlrabi (Brassica oleracea var. gongylodes)
Korean Azalea (Rhododendron yedoense)
Korean Bellflower (Campanula takesimana)
Korean Mint (Agastache rugosa)
Korean Rhododendron (Rhododendron mucronulatum)
Korean Velvet Grass (Zoysia matrella var. pacifica)
Koreanspice Viburnum (Viburnum carlesii)
Kousa Dogwood (Cornus kousa)
Krauss's Spikemoss (Selaginella kraussiana)
Kumquat (Citrus japonica)
Kura Clover (Trifolium ambiguum)
Labrador Violet (Viola labradorica)
Lace Cactus (Echinocereus reichenbachii)
Lacy Phacelia (Phacelia tanacetifolia)
Lady Banks' Rose (Rosa banksiae)
Lady Fern (Athyrium filix-femina)
Lady of the Night (Brunfelsia americana)
Lady Tulip (Tulipa clusiana)
Lady's Mantle (Alchemilla mollis)
Lamb's Ear (Stachys byzantina)
Lanceleaf Coreopsis (Coreopsis lanceolata)
Lanceleaf Stonecrop (Sedum lanceolatum)
Lantana (Lantana camara)
Large Beardtongue (Penstemon grandiflorus)
Large Fothergilla (Fothergilla major)
Large-Flowered Coreopsis (Coreopsis grandiflora)
Late Boneset (Eupatorium serotinum)
Late Figwort (Scrophularia marilandica)
Late Lilac (Syringa villosa)
Late Purple Aster (Symphyotrichum patens)
Laurustinus (Viburnum tinus)
Lavandin (Lavandula × intermedia)
Lavender (Lavandula angustifolia)
Lavender Cotton (Santolina chamaecyparissus)
Leadplant (Amorpha canescens)
Leatherleaf Fern (Rumohra adiantiformis)
Leavenworth's Eryngo (Eryngium leavenworthii)
Leavenworth's Tickseed (Coreopsis leavenworthii)
Leek (Allium ampeloprasum)
Lemon (Citrus limon)
Lemon Balm (Melissa officinalis)
Lemon Beebalm (Monarda citriodora)
Lemon Bottlebrush (Callistemon citrinus)
Lemon Lily (Hemerocallis lilioasphodelus)
Lemon Thyme (Thymus × citriodorus)
Lemon Verbena (Aloysia citrodora)
Lemongrass (Cymbopogon citratus)
Lenten Rose (Helleborus orientalis)
Lentil (Lens culinaris)
Leopard Lily (Lilium pardalinum)
Leopard Plant (Ligularia dentata)
Leopard's Bane (Doronicum orientale)
Lesser Bougainvillea (Bougainvillea glabra)
Lesser Calamint (Calamintha nepeta)
Lettuce (Lactuca sativa)
Lewis Flax (Linum lewisii)
Lewis' Mock Orange (Philadelphus lewisii)
Lewis' Monkeyflower (Mimulus lewisii)
Lilac Clematis (Clematis patens)
Lilac Sage (Salvia verticillata)
Lily Magnolia (Magnolia liliiflora)
Lily of the Nile (Agapanthus africanus)
Lily of the Valley (Convallaria majalis)
Lima Bean (Phaseolus lunatus)
Limber Honeysuckle (Lonicera dioica)
Lime (Citrus latifolia)
Lindley's Blazingstar (Mentzelia lindleyi)
Lingonberry (Vaccinium vitis-idae)
Lion's Ear (Leonotis leonurus)
Lisianthus (Eustoma exaltatum subsp. russellianum)
Lithodora (Lithodora diffusa)
Little Bluestem (Schizachyrium scoparium)
Little Brown Jug (Hexastylis arifolia)
Little Sur Manzanita (Arctostaphylos edmundsii)
Littleleaf Linden (Tilia cordata)
Live Oak (Quercus virginiana)
Livingstone Daisy (Dorotheanthus bellidiformis)
Loblolly Bay (Gordonia lasianthus)
Lobster Claw (Heliconia rostrata)
Loebner Magnolia (Magnolia × loebneri)
Loganberry (Rubus x loganobaccus)
London Pride (Saxifraga × urbium)
Longbract Wild Indigo (Baptisia bracteata)
Longleaf Speedwell (Pseudolysimachion longifolium)
Longsepal Beardtongue (Penstemon calycosus)
Loquat (Eriobotrya japonica)
Lovage (Levisticum officinale)
Love-in-a-Mist (Nigella damascena)
Low Beardtongue (Penstemon humilis)
Lowbush Blueberry (Vaccinium angustifolium)
Lucile's Glory of the Snow (Chionodoxa luciliae)
Lungwort (Pulmonaria officinalis)
Lydia Broom (Genista lydia)
Lyreleaf Sage (Salvia lyrata)
Macadamia (Macadamia integrifolia)
Macedonian Scabious (Knautia macedonica)
Mache (Valerianella locusta)
Macrantha Pearlbush (Exochorda × macrantha)
Madagascar Jasmine (Stephanotis floribunda)
Madagascar Periwinkle (Catharanthus roseus)
Madonna Lily (Lilium candidum)
Mahala Mat (Ceanothus prostratus)
Maiden Pink (Dianthus deltoides)
Maidenhair Fern (Adiantum pedatum)
Malabar Spinach (Basella alba)
Mallow Ninebark (Physocarpus malvaceus)
Malope (Malope trifida)
Maltese Cross (Lychnis chalcedonica)
Manchurian Lilac (Syringa pubescens subsp. patula)
Mandevilla (Mandevilla × amoena)
Mango (Mangifera indica)
Manila Grass (Zoysia matrella)
Mapleleaf Viburnum (Viburnum acerifolium)
Marginal Wood Fern (Dryopteris marginalis)
Marguerite Daisy (Argyranthemum frutescens)
Marionberry (Rubus ursinus)
Maritime Ceanothus (Ceanothus maritimus)
Marjoram (Origanum majorana)
Marmalade Bush (Streptosolen jamesonii)
Marsh Mallow (Althaea officinalis)
Marsh Marigold (Caltha palustris)
Martagon Lily (Lilium martagon)
Maryland Goldenaster (Chrysopsis mariana)
Maryland Meadowbeauty (Rhexia mariana)
Maryland Senna (Senna marilandica)
Mascarene Grass (Zoysia tenuifolia)
Masterwort (Astrantia major)
Mat Penstemon (Penstemon caespitosus)
Matilija Poppy (Romneya coulteri)
Maximilian Sunflower (Helianthus maximiliani)
Mayapple (Podophyllum peltatum)
Mayhaw (Crataegus aestivalis)
Maypop (Passiflora incarnata)
Meadow Blazing Star (Liatris ligulistylis)
Meadow Checkerbloom (Sidalcea campestris)
Meadow Cranesbill (Geranium pratense)
Meadow Phlox (Phlox maculata)
Meadow Sage (Salvia pratensis)
Meadowfoam (Limnanthes douglasii)
Meadowsweet (Filipendula ulmaria)
Mealycup Sage (Salvia farinacea)
Mediterranean Spurge (Euphorbia characias)
Medlar (Mespilus germanica)
Meehan's Mint (Meehania cordata)
Melon (Cucumis melo)
Memorial Rose (Rosa wichuraiana)
Mexican Buckeye (Ungnadia speciosa)
Mexican Bush Sage (Salvia leucantha)
Mexican Flame Vine (Pseudogynoxys chenopodioides)
Mexican Fleabane (Erigeron karvinskianus)
Mexican Giant Hyssop (Agastache mexicana)
Mexican Hat (Ratibida columnifera)
Mexican Heather (Cuphea hyssopifolia)
Mexican Honeysuckle (Justicia spicigera)
Mexican Mint Marigold (Tagetes lucida)
Mexican Orange (Choisya ternata)
Mexican Pink (Silene laciniata)
Mexican Plum (Prunus mexicana)
Mexican Stonecrop (Sedum mexicanum)
Mexican Sunflower (Tithonia rotundifolia)
Mexican Tulip Poppy (Hunnemannia fumariifolia)
Mexican Whorled Milkweed (Asclepias fascicularis)
Meyer Lemon (Citrus x meyeri)
Meyer Lilac (Syringa meyeri)
Miami Mist (Phacelia purshii)
Michael's Flower (Fritillaria michailovskyi)
Michigan Lily (Lilium michiganense)
Milky Bellflower (Gadellia lactiflora)
Millet (Panicum miliaceum)
Miner's Lettuce (Claytonia perfoliata)
Miniature Lupine (Lupinus bicolor)
Mint (Mentha spicata)
Miss Willmott's Ghost (Eryngium giganteum)
Missouri Evening Primrose (Oenothera macrocarpa)
Missouri Goldenrod (Solidago missouriensis)
Mizuna (Brassica rapa var. japonica)
Mondo Grass (Ophiopogon japonicus)
Monkshood (Aconitum napellus)
Montbretia (Crocosmia × crocosmiiflora)
Monterey Manzanita (Arctostaphylos hookeri)
Moonflower (Ipomoea alba)
Morning Glory (Ipomoea purpurea)
Moroccan Toadflax (Linaria maroccana)
Moss Campion (Silene acaulis)
Moss Rose (Portulaca grandiflora)
Moss Verbena (Glandularia pulchella)
Mossy Saxifrage (Saxifraga × arendsii)
Mottled Wild Ginger (Hexastylis shuttleworthii)
Mount Lemmon Marigold (Tagetes lemmonii)
Mountain Alyssum (Alyssum montanum)
Mountain Avens (Dryas octopetala)
Mountain Everlasting (Antennaria dioica)
Mountain Fleece (Persicaria amplexicaulis)
Mountain Goldenbanner (Thermopsis montana)
Mountain Hydrangea (Hydrangea serrata)
Mountain Laurel (Kalmia latifolia)
Mountain Monardella (Monardella odoratissima)
Mountain Pieris (Pieris floribunda)
Mountain Sandwort (Arenaria montana)
Mouse-Ear Tickseed (Coreopsis auriculata)
Moyes Rose (Rosa moyesii)
Mulberry (Morus alba)
Mule Fat (Baccharis salicifolia)
Mule's Ears (Wyethia amplexicaulis)
Mung Beans (Vigna radiata)
Munro's Globemallow (Sphaeralcea munroana)
Murray's Penstemon (Penstemon murrayanus)
Muscadine Grape (Vitis rotundifolia)
Musk Mallow (Malva moschata)
Musk Rose (Rosa moschata)
Mustard (Brassica juncea)
Naked Buckwheat (Eriogonum nudum)
Naked Lady (Amaryllis belladonna)
Nannyberry (Viburnum lentago)
Napa Cabbage (Brassica rapa subsp. pekinensis)
Naples Garlic (Allium neapolitanum)
Narrow-Leaved Coneflower (Echinacea angustifolia)
Narrow-Spiked Ligularia (Ligularia stenocephala)
Narrowleaf Blazing Star (Liatris punctata var. mucronata)
Narrowleaf Ironweed (Vernonia lettermannii)
Narrowleaf Mountain Mint (Pycnanthemum tenuifolium)
Narrowleaf Silkgrass (Pityopsis graminifolia)
Narrowleaf Willow (Salix exigua)
Narrowleaf Zinnia (Zinnia angustifolia)
Nasturtium (Tropaeolum majus)
Nectarine (Prunus persica var. nectarina)
Needle Stonecrop (Sedum lineare)
Nemesia (Nemesia strumosa)
Nepal Cinquefoil (Potentilla nepalensis)
Netleaf Hackberry (Celtis laevigata var. reticulata)
Nettle-Leaved Mullein (Verbascum chaixii)
Nettleleaf Giant Hyssop (Agastache urticifolia)
Nevius' Stonecrop (Sedum nevii)
New England Aster (Symphyotrichum novae-angliae)
New Guinea Impatiens (Impatiens hawkeri)
New Jersey Tea (Ceanothus americanus)
New York Aster (Symphyotrichum novi-belgii)
New York Fern (Thelypteris noveboracensis)
New York Ironweed (Vernonia noveboracensis)
New Zealand Bur (Acaena microphylla)
New Zealand Spinach (Tetragonia tetragonioides)
New Zealand Tea Tree (Leptospermum scoparium)
Night-Blooming Jasmine (Cestrum nocturnum)
Night-Scented Stock (Matthiola longipetala)
Nineanther Prairie Clover (Dalea enneandra)
Nineleaf Biscuitroot (Lomatium triternatum)
Nippon Daisy (Nipponanthemum nipponicum)
Nippon Spirea (Spiraea nipponica)
Nodding Ladies' Tresses (Spiranthes cernua)
Nodding Onion (Allium cernuum)
Nootka Lupine (Lupinus nootkatensis)
Nootka Rose (Rosa nutkana)
Northern Bush Honeysuckle (Diervilla lonicera)
Northern Catalpa (Catalpa speciosa)
Northern Red Oak (Quercus rubra)
Northern Spicebush (Lindera benzoin)
Nutmeg (Myristica fragrans)
Oak Fern (Gymnocarpium dryopteris)
Oakleaf Hydrangea (Hydrangea quercifolia)
Oat (Avena sativa)
Obedient Plant (Physostegia virginiana)
Oca (Oxalis tuberosa)
Oceanspray (Holodiscus discolor)
Oconee Azalea (Rhododendron flammeum)
Ocotillo (Fouquieria splendens)
October Daphne (Hylotelephium sieboldii)
Ogeechee Tupelo (Nyssa ogeche)
Ohio Buckeye (Aesculus glabra)
Ohio Goldenrod (Oligoneuron ohioense)
Ohio Spiderwort (Tradescantia ohiensis)
Okra (Abelmoschus esculentus)
Oleander (Nerium oleander)
Olive (Olea europaea)
Oneflower Helianthella (Helianthella uniflora)
Oneleaf Onion (Allium unifolium)
Onion (Allium cepa)
Orach (Atriplex hortensis)
Orange (Citrus sinensis)
Orange Coneflower (Rudbeckia fulgida)
Orange Honeysuckle (Lonicera ciliosa)
Orange Ice Plant (Lampranthus aurantiacus)
Orange Lily (Lilium bulbiferum)
Orange River Lily (Crinum bulbispermum)
Oregano (Origanum vulgare)
Oregon Checkerbloom (Sidalcea oregana)
Oregon Grape (Mahonia aquifolium)
Oregon Iris (Iris tenax)
Oregon Stonecrop (Sedum oreganum)
Oregon White Oak (Quercus garryana)
Oriental Poppy (Papaver orientale)
Orpine (Hylotelephium telephium)
Oshima Sedge (Carex oshimensis)
Osteospermum (Osteospermum ecklonis)
Ostrich Fern (Matteuccia struthiopteris)
Oxblood Lily (Rhodophiala bifida)
Oxeye Sunflower (Heliopsis helianthoides)
Pa'u O Hi'iaka (Jacquemontia ovalifolia ssp. sandwicensis)
Pacific Aster (Symphyotrichum chilense)
Pacific Bleeding Heart (Dicentra formosa)
Pacific Crabapple (Malus fusca)
Pacific Dogwood (Cornus nuttallii)
Pacific Madrone (Arbutus menziesii)
Pacific Ninebark (Physocarpus capitatus)
Pacific Rhododendron (Rhododendron macrophyllum)
Pacific Silverweed (Argentina egedii)
Pacific Trillium (Trillium ovatum)
Pagoda Dogwood (Cornus alternifolia)
Pagoda Flower (Clerodendrum paniculatum)
Painted Daisy (Tanacetum coccineum)
Painted Sage (Salvia viridis)
Painted Tongue (Salpiglossis sinuata)
Pale Beardtongue (Penstemon pallidus)
Pale Evening Primrose (Oenothera pallida)
Pale Purple Coneflower (Echinacea pallida)
Pale Yellow-Eyed Grass (Sisyrinchium striatum)
Paleleaf Sunflower (Helianthus strumosus)
Palm Sedge (Carex muskingumensis)
Palmer's Penstemon (Penstemon palmeri)
Panicle Hydrangea (Hydrangea paniculata)
Panicledleaf Ticktrefoil (Desmodium paniculatum)
Pansy (Viola × wittrockiana)
Paper Birch (Betula papyrifera)
Paper Daisy (Rhodanthe chlorocephala)
Paperflower (Psilostrophe tagetina)
Paperwhite (Narcissus papyraceus)
Paprika (Capsicum annuum)
Parrot Lily (Alstroemeria psittacina)
Parrot's Beak (Lotus berthelotii)
Parrot's Beak Heliconia (Heliconia psittacorum)
Parry's Penstemon (Penstemon parryi)
Parsley (Petroselinum crispum)
Parsley Hawthorn (Crataegus marshallii)
Parsnip (Pastinaca sativa)
Parsnipflower Buckwheat (Eriogonum heracleoides)
Partridge Pea (Chamaecrista fasciculata)
Partridgeberry (Mitchella repens)
Pasque Flower (Pulsatilla vulgaris)
Path Rush (Juncus tenuis)
Pawpaw (Asimina triloba)
Peach (Prunus persica)
Peach-Leaved Bellflower (Campanula persicifolia)
Peacock Ginger (Kaempferia pulchra)
Peacock Spikemoss (Selaginella uncinata)
Peanut (Arachis hypogaea)
Pear (Pyrus communis)
Pearl Millet (Pennisetum glaucum)
Pearlbush (Exochorda racemosa)
Pearly Everlasting (Anaphalis margaritacea)
Peas (Pisum sativum)
Pecans (Carya illinoinensis)
Pennsylvania Sedge (Carex pensylvanica)
Peony (Paeonia lactiflora)
Peppermint (Mentha × piperita)
Peregrina (Jatropha integerrima)
Perennial Cornflower (Centaurea montana)
Perennial Pea (Lathyrus latifolius)
Perennial Peanut (Arachis glabrata)
Perennial Ryegrass (Lolium perenne)
Perilla (Perilla frutescens)
Persian Barrenwort (Epimedium pinnatum)
Persian Buttercup (Ranunculus asiaticus)
Persian Catmint (Nepeta racemosa)
Persian Cyclamen (Cyclamen persicum)
Persian Lilac (Syringa × persica)
Persian Lily (Fritillaria persica)
Persian Onion (Allium aflatunense)
Persimmon (Diospyros kaki)
Peruvian Lily (Alstroemeria aurea)
Peruvian Verbena (Glandularia peruviana)
Peruvian Zinnia (Zinnia peruviana)
Petunia (Petunia × atkinsiana)
Pfitzer Juniper (Juniperus × pfitzeriana)
Philadelphia Fleabane (Erigeron philadelphicus)
Pickerelweed (Pontederia cordata)
Piedmont Azalea (Rhododendron canescens)
Pigeon Pea (Cajanus cajan)
Piggyback Plant (Tolmiea menziesii)
Pin Cherry (Prunus pensylvanica)
Pincushion Flower (Scabiosa columbaria)
Pincushion Protea (Leucospermum cordifolium)
Pindo Palm (Butia odorata)
Pineapple Guava (Acca sellowiana)
Pineapple Lily (Eucomis comosa)
Pineapple Sage (Salvia elegans)
Pineleaf Penstemon (Penstemon pinifolius)
Pinemat Manzanita (Arctostaphylos nevadensis)
Pineneedle Milkweed (Asclepias linaria)
Pinewoods Milkweed (Asclepias humistrata)
Pink Calla (Zantedeschia rehmannii)
Pink Evening Primrose (Oenothera speciosa)
Pink Honeysuckle (Lonicera hispidula)
Pink Jasmine (Jasminum polyanthum)
Pink Muhly (Muhlenbergia capillaris)
Pink Popcorn Blueberry (Vaccinium corymbosum)
Pink Rain Lily (Zephyranthes grandiflora)
Pink Tickseed (Coreopsis rosea)
Pink Trumpet Tree (Tabebuia heterophylla)
Pink Trumpet Vine (Podranea ricasoliana)
Pink Turtlehead (Chelone lyonii)
Pinkscale Blazing Star (Liatris elegans)
Pinkshell Azalea (Rhododendron vaseyi)
Pinxterbloom Azalea (Rhododendron periclymenoides)
Pipevine (Aristolochia macrophylla)
Pistachio (Pistacia vera)
Pitcher's Leather Flower (Clematis pitcheri)
Plains Coreopsis (Coreopsis tinctoria)
Plains Pricklypear (Opuntia polyacantha)
Plantain Pussytoes (Antennaria plantaginifolia)
Plantainleaf Sedge (Carex plantaginea)
Plum (Prunus domestica)
Plume Poppy (Macleaya cordata)
Plumleaf Azalea (Rhododendron prunifolium)
Poet's Daffodil (Narcissus poeticus)
Poinsettia (Euphorbia pulcherrima)
Point Reyes Ceanothus (Ceanothus gloriosus)
Pointleaf Manzanita (Arctostaphylos pungens)
Poke Milkweed (Asclepias exaltata)
Polyanthus Primrose (Primula × polyantha)
Pomegranate (Punica granatum)
Pomelo (Citrus maxima)
Poppy Anemone (Anemone coronaria)
Possumhaw (Ilex decidua)
Possumhaw Viburnum (Viburnum nudum)
Potato (Solanum tuberosum)
Potato Vine (Solanum jasminoides)
Powderpuff (Mimosa strigillosa)
Powderpuff Tree (Calliandra haematocephala)
Powdery Thalia (Thalia dealbata)
Praestans Tulip (Tulipa praestans)
Prairie Blazing Star (Liatris pycnostachya)
Prairie Coreopsis (Coreopsis palmata)
Prairie Crabapple (Malus ioensis)
Prairie Dock (Silphium terebinthinaceum)
Prairie Dropseed (Sporobolus heterolepis)
Prairie Ironweed (Vernonia fasciculata)
Prairie Junegrass (Koeleria macrantha)
Prairie Milkweed (Asclepias sullivantii)
Prairie Nymph (Herbertia lahue)
Prairie Onion (Allium stellatum)
Prairie Parsley (Polytaenia nuttallii)
Prairie Phlox (Phlox pilosa)
Prairie Rose (Rosa setigera)
Prairie Smoke (Geum triflorum)
Prairie Sunflower (Helianthus petiolaris)
Prairie Verbena (Glandularia bipinnatifida)
Prairie Wild Rose (Rosa arkansana)
Prairie Willow (Salix humilis)
Prairie Zinnia (Zinnia grandiflora)
Preston Lilac (Syringa × prestoniae)
Prettyface (Triteleia ixioides)
Pride of Barbados (Caesalpinia pulcherrima)
Pride of Madeira (Echium candicans)
Primrose Jasmine (Jasminum mesnyi)
Prince's Plume (Stanleya pinnata)
Princess Flower (Tibouchina urvilleana)
Prostrate Acacia (Acacia redolens)
Prostrate Speedwell (Veronica prostrata)
Puget Sound Gumweed (Grindelia integrifolia)
Pumpkin (Cucurbita maxima)
Purple Angelica (Angelica gigas)
Purple Bell Vine (Rhodochiton atrosanguineus)
Purple Bergamot (Monarda media)
Purple Coneflower (Echinacea purpurea)
Purple Giant Hyssop (Agastache scrophulariifolia)
Purple Heart (Tradescantia pallida)
Purple Lovegrass (Eragrostis spectabilis)
Purple Milkweed (Asclepias purpurascens)
Purple Mullein (Verbascum phoeniceum)
Purple Needlegrass (Nassella pulchra)
Purple Owl's Clover (Castilleja exserta)
Purple Passion Asparagus (Asparagus officinalis)
Purple Prairie Clover (Dalea purpurea)
Purple Rockrose (Cistus × purpureus)
Purple Sage (Salvia dorrii)
Purple Toadflax (Linaria purpurea)
Purple-Flowering Raspberry (Rubus odoratus)
Purplehead Sneezeweed (Helenium flexuosum)
Purpleosier Willow (Salix purpurea)
Purplestem Angelica (Angelica atropurpurea)
Purplestem Aster (Symphyotrichum puniceum)
Purpletop (Tridens flavus)
Purpletop Vervain (Verbena bonariensis)
Purslane (Portulaca oleracea)
Pussy Willow (Salix discolor)
Quaking Aspen (Populus tremuloides)
Queen of the Prairie (Filipendula rubra)
Queen's Crape Myrtle (Lagerstroemia speciosa)
Queen's Wreath (Petrea volubilis)
Quince (Cydonia oblonga)
Quinoa (Chenopodium quinoa)
Rabbiteye Blueberry (Vaccinium virgatum)
Radicchio (Cichorium intybus)
Radish (Raphanus sativus)
Ragged Robin (Lychnis flos-cuculi)
Railroad Vine (Ipomoea pes-caprae)
Rainbow Carrot (Daucus carota subsp. sativus)
Rainier Cherry (Prunus avium)
Ramps (Allium tricoccum)
Rangoon Creeper (Quisqualis indica)
Raspberry (Rubus idaeus)
Rattlesnake Master (Eryngium yuccifolium)
Red Barrenwort (Epimedium × rubrum)
Red Buckeye (Aesculus pavia)
Red Buckwheat (Eriogonum grande var. rubescens)
Red Clover (Trifolium pratense)
Red Columbine (Aquilegia canadensis)
Red Currant (Ribes rubrum)
Red Elderberry (Sambucus racemosa)
Red Fescue (Festuca rubra)
Red Flag Bush (Mussaenda erythrophylla)
Red Ginger (Alpinia purpurata)
Red Hot Poker (Kniphofia uvaria)
Red Huckleberry (Vaccinium parvifolium)
Red Larkspur (Delphinium nudicaule)
Red Maple (Acer rubrum)
Red Mulberry (Morus rubra)
Red Osier Dogwood (Cornus sericea)
Red Passionflower (Passiflora coccinea)
Red Ribbons (Clarkia concinna)
Red Spider Lily (Lycoris radiata)
Red Trillium (Trillium erectum)
Red Turtlehead (Chelone obliqua)
Red Valerian (Centranthus ruber)
Red Yucca (Hesperaloe parviflora)
Red-Flowering Currant (Ribes sanguineum)
Redbay (Persea borbonia)
Redleaf Rose (Rosa glauca)
Redstem Ceanothus (Ceanothus sanguineus)
Redtop (Agrostis gigantea)
Redvein Enkianthus (Enkianthus campanulatus)
Redwood Ivy (Vancouveria planipetala)
Redwood Sorrel (Oxalis oregana)
Regal Geranium (Pelargonium × domesticum)
Regal Lily (Lilium regale)
Resinous Skullcap (Scutellaria resinosa)
Reticulata Camellia (Camellia reticulata)
Reticulated Iris (Iris reticulata)
Rhubarb (Rheum rhabarbarum)
Rice (Oryza sativa)
Riddell's Goldenrod (Oligoneuron riddellii)
River Birch (Betula nigra)
Riverbank Lupine (Lupinus rivularis)
Robb's Spurge (Euphorbia amygdaloides var. robbiae)
Robin's Plantain (Erigeron pulchellus)
Rock Cotoneaster (Cotoneaster horizontalis)
Rock Cress (Aubrieta deltoidea)
Rock Penstemon (Penstemon rupicola)
Rock Purslane (Cistanthe grandiflora)
Rock Rose Pavonia (Pavonia lasiopetala)
Rock Soapwort (Saponaria ocymoides)
Rocket Candytuft (Iberis amara)
Rocket Larkspur (Consolida ajacis)
Rocky Mountain Beeplant (Cleome serrulata)
Rocky Mountain Columbine (Aquilegia coerulea)
Rocky Mountain Iris (Iris missouriensis)
Rocky Mountain Penstemon (Penstemon strictus)
Roman Chamomile (Chamaemelum nobile)
Roof Iris (Iris tectorum)
Rose Campion (Lychnis coronaria)
Rose Clover (Trifolium hirtum)
Rose Hip (Rosa rugosa)
Rose Mallow (Hibiscus moscheutos)
Rose of Sharon (Hibiscus syriacus)
Rose Spirea (Spiraea douglasii)
Rose Verbena (Glandularia canadensis)
Rosea Ice Plant (Drosanthemum floribundum)
Rosebay Rhododendron (Rhododendron maximum)
Roseleaf Sage (Salvia involucrata)
Rosemary (Salvia rosmarinus)
Rosemary Grevillea (Grevillea rosmarinifolia)
Roseshell Azalea (Rhododendron prinophyllum)
Rosinweed (Silphium integrifolium)
Rosy Pussytoes (Antennaria rosea)
Rosy Sedge (Carex rosea)
Rough Blazing Star (Liatris aspera)
Rough-Leaved Hydrangea (Hydrangea aspera)
Roughleaf Dogwood (Cornus drummondii)
Roundhead Bushclover (Lespedeza capitata)
Roundhead Prairie Clover (Dalea multiflora)
Roundleaf Ragwort (Packera obovata)
Royal Azalea (Rhododendron schlippenbachii)
Royal Catchfly (Silene regia)
Royal Penstemon (Penstemon speciosus)
Royal Poinciana (Delonix regia)
Rubber Rabbitbrush (Ericameria nauseosa)
Rue (Ruta graveolens)
Rue Anemone (Thalictrum thalictroides)
Runner Bean (Phaseolus coccineus)
Rupturewort (Herniaria glabra)
Rush Milkweed (Asclepias subulata)
Russet Buffaloberry (Shepherdia canadensis)
Russian Sage (Perovskia atriplicifolia)
Rusty Blackhaw (Viburnum rufidulum)
Rusty Foxglove (Digitalis ferruginea)
Rutabaga (Brassica napus)
Rydberg's Penstemon (Penstemon rydbergii)
Rye (Secale cereale)
Sacred Datura (Datura wrightii)
Sacred Lily (Rohdea japonica)
Sacred Lotus (Nelumbo nucifera)
Safflower (Carthamus tinctorius)
Saffron Crocus (Crocus sativus)
Sage (Salvia officinalis)
Sageleaf Rockrose (Cistus salviifolius)
Salal (Gaultheria shallon)
Salmonberry (Rubus spectabilis)
Salsify (Tragopogon porrifolius)
San Luis Purple Sage (Salvia leucophylla)
Sand Dune Sedge (Carex pansa)
Sand Penstemon (Penstemon ambiguus)
Sand Phlox (Phlox bifida)
Sandmat Manzanita (Arctostaphylos pumila)
Santa Barbara Sedge (Carex barbarae)
Santa Cruz Island Buckwheat (Eriogonum arborescens)
Sargent Crabapple (Malus sargentii)
Sasanqua Camellia (Camellia sasanqua)
Sassafras (Sassafras albidum)
Satsuma (Citrus unshiu)
Saucer Magnolia (Magnolia × soulangeana)
Savanna Blazing Star (Liatris scariosa)
Savin Juniper (Juniperus sabina)
Saw Palmetto (Serenoa repens)
Sawsepal Penstemon (Penstemon glaber)
Sawtooth Sunflower (Helianthus grosseserratus)
Scabland Penstemon (Penstemon deustus)
Scallion (Allium fistulosum)
Scaly Blazing Star (Liatris squarrosa)
Scarlet Beeblossom (Oenothera suffrutescens)
Scarlet Betony (Stachys coccinea)
Scarlet Bugler (Penstemon centranthifolius)
Scarlet Clematis (Clematis texensis)
Scarlet Flax (Linum grandiflorum)
Scarlet Gilia (Ipomopsis aggregata)
Scarlet Ginger Lily (Hedychium coccineum)
Scarlet Globemallow (Sphaeralcea coccinea)
Scarlet Larkspur (Delphinium cardinale)
Scarlet Monkeyflower (Mimulus cardinalis)
Scarlet Rosemallow (Hibiscus coccineus)
Scarlet Sage (Salvia splendens)
Schisandra (Schisandra chinensis)
Scotch Rose (Rosa spinosissima)
Scouler's Willow (Salix scouleriana)
Screwbean Mesquite (Prosopis pubescens)
Sea Buckthorn (Hippophae rhamnoides)
Sea Kale (Crambe maritima)
Sea Lavender (Limonium platyphyllum)
Sea Oats (Uniola paniculata)
Sea Purslane (Sesuvium portulacastrum)
Sea Thrift (Armeria maritima)
Seablush (Plectritis congesta)
Seacliff Buckwheat (Eriogonum parvifolium)
Searls' Prairie Clover (Dalea searlsiae)
Seashore Dropseed (Sporobolus virginicus)
Seashore Mallow (Kosteletzkya virginica)
Seashore Paspalum (Paspalum vaginatum)
Seaside Daisy (Erigeron glaucus)
Seaside Goldenrod (Solidago sempervirens)
Sego Lily (Calochortus nuttallii)
Sensitive Fern (Onoclea sensibilis)
Sensitive Partridge Pea (Chamaecrista nictitans)
Serbian Bellflower (Campanula poscharskyana)
Serviceberry (Amelanchier alnifolia)
Sesame (Sesamum indicum)
Seven-Son Flower (Heptacodium miconioides)
Shadblow Serviceberry (Amelanchier canadensis)
Shagbark Hickory (Carya ovata)
Shallot (Allium cepa var. aggregatum)
Sharp-Lobed Hepatica (Hepatica nobilis var. acuta)
Sharpleaf Penstemon (Penstemon acuminatus)
Shasta Daisy (Leucanthemum × superbum)
Sheep Fescue (Festuca ovina)
Sheep Laurel (Kalmia angustifolia)
Shell Ginger (Alpinia zerumbet)
Shellbark Hickory (Carya laciniosa)
Shelling Beans (Phaseolus vulgaris)
Shining Willow (Salix lucida)
Shinseiki Pear (Pyrus pyrifolia)
Shirley Poppy (Papaver rhoeas)
Shooting Star (Dodecatheon meadia)
Shore Juniper (Juniperus conferta)
Short's Aster (Symphyotrichum shortii)
Showy Colchicum (Colchicum speciosum)
Showy Fleabane (Erigeron speciosus)
Showy Goldeneye (Heliomeris multiflora)
Showy Goldenrod (Solidago speciosa)
Showy Jasmine (Jasminum floridum)
Showy Lady's Slipper (Cypripedium reginae)
Showy Milkweed (Asclepias speciosa)
Showy Penstemon (Penstemon spectabilis)
Showy Stonecrop (Hylotelephium spectabile)
Showy Ticktrefoil (Desmodium canadense)
Shrimp Plant (Justicia brandegeeana)
Shrubby Boneset (Ageratina havanensis)
Shrubby Cinquefoil (Dasiphora fruticosa)
Shrubby Penstemon (Penstemon fruticosus)
Shrubby St. John's Wort (Hypericum prolificum)
Siam Tulip (Curcuma alismatifolia)
Siberian Barren Strawberry (Geum ternatum)
Siberian Bugloss (Brunnera macrophylla)
Siberian Catmint (Nepeta sibirica)
Siberian Cypress (Microbiota decussata)
Siberian Iris (Iris sibirica)
Siberian Squill (Scilla siberica)
Siberian Wallflower (Erysimum × marshallii)
Sicklekeel Lupine (Lupinus albicaulis)
Sidebells Penstemon (Penstemon secundiflorus)
Sideoats Grama (Bouteloua curtipendula)
Sieber's Crocus (Crocus sieberi)
Siebold's Hosta (Hosta sieboldiana)
Siebold's Primrose (Primula sieboldii)
Signet Marigold (Tagetes tenuifolia)
Silk Floss Tree (Chorisia speciosa)
Silky Aster (Symphyotrichum sericeum)
Silky Dogwood (Cornus amomum)
Silky Lupine (Lupinus sericeus)
Silky Prairie Clover (Dalea villosa)
Silky-Leaf Woadwaxen (Genista pilosa)
Silver Buffaloberry (Shepherdia argentea)
Silver Bush Lupine (Lupinus albifrons)
Silver Carpet (Dymondia margaretae)
Silver Ponyfoot (Dichondra argentea)
Silver Sage (Salvia argentea)
Silver Sedge (Carex platyphylla)
Silverberry (Elaeagnus ebbingei)
Silverbush (Convolvulus cneorum)
Silverleaf Phacelia (Phacelia hastata)
Silvermound (Artemisia schmidtiana)
Silverweed (Argentina anserina)
Silvery Lupine (Lupinus argenteus)
Sims's Azalea (Rhododendron simsii)
Singleleaf Pinyon (Pinus monophylla)
Singleseed Juniper (Juniperus squamata)
Siskiyou Lewisia (Lewisia cotyledon)
Sitka Willow (Salix sitchensis)
Skunkbush Sumac (Rhus trilobata)
Sky Blue Aster (Symphyotrichum oolentangiense)
Sky Lupine (Lupinus nanus)
Slender Cinquefoil (Potentilla gracilis)
Slender Deutzia (Deutzia gracilis)
Small Camas (Camassia quamash)
Small Yellow Foxglove (Digitalis lutea)
Small's Penstemon (Penstemon smallii)
Small-Flowered Penstemon (Penstemon procerus)
Small-Leaf Globemallow (Sphaeralcea parvifolia)
Smoke Tree (Cotinus coggygria)
Smooth Beardtongue (Penstemon laevigatus)
Smooth Blue Aster (Symphyotrichum laeve)
Smooth Hydrangea (Hydrangea arborescens)
Smooth Phlox (Phlox glaberrima)
Smooth Rose (Rosa blanda)
Smooth Sumac (Rhus glabra)
Snake's Head Fritillary (Fritillaria meleagris)
Snap Peas (Pisum sativum var. macrocarpon)
Snapdragon (Antirrhinum majus)
Sneezeweed (Helenium autumnale)
Sneezewort (Achillea ptarmica)
Snow Azalea (Rhododendron mucronatum)
Snow Buckwheat (Eriogonum niveum)
Snow Crocus (Crocus chrysanthus)
Snow-in-Summer (Cerastium tomentosum)
Snow-on-the-Mountain (Euphorbia marginata)
Snowbrush (Ceanothus velutinus)
Snowdrop (Galanthus nivalis)
Snowdrop Anemone (Anemone sylvestris)
Snowy Woodrush (Luzula nivea)
Soap Aloe (Aloe maculata)
Soapweed Yucca (Yucca glauca)
Soapwort (Saponaria officinalis)
Society Garlic (Tulbaghia violacea)
Solitary Clematis (Clematis integrifolia)
Sonoma Sage (Salvia sonomensis)
Sorghum (Sorghum bicolor)
Sorrel (Rumex acetosa)
Sour Cherry (Prunus cerasus)
Sourwood (Oxydendrum arboreum)
Southern Blue Flag (Iris virginica)
Southern Catalpa (Catalpa bignonioides)
Southern Crabapple (Malus angustifolia)
Southern Indica Azalea (Rhododendron indicum)
Southern Magnolia (Magnolia grandiflora)
Southern Shield Fern (Thelypteris kunthii)
Southern Wood Fern (Dryopteris ludoviciana)
Soybean (Glycine max)
Spanish Bluebell (Hyacinthoides hispanica)
Spanish Flag (Ipomoea lobata)
Spanish Lavender (Lavandula stoechas)
Spanish Needles (Bidens alba)
Spanish Stonecrop (Sedum hispanicum)
Sparkleberry (Vaccinium arboreum)
Spelt (Triticum spelta)
Spider Flower (Cleome hassleriana)
Spike Speedwell (Veronica spicata)
Spike Winter Hazel (Corylopsis spicata)
Spinach (Spinacia oleracea)
Spiny Bear's Breeches (Acanthus spinosus)
Spotted Beebalm (Monarda punctata)
Spotted Deadnettle (Lamium maculatum)
Spotted Joe Pye Weed (Eutrochium maculatum)
Spreading Dogbane (Apocynum androsaemifolium)
Spreading Stonecrop (Sedum divergens)
Spring Beauty (Claytonia virginica)
Spring Cinquefoil (Potentilla neumanniana)
Spring Snowflake (Leucojum vernum)
Spring Starflower (Tristagma uniflorum)
Sprouts (Medicago sativa)
Spuria Iris (Iris spuria)
St. Augustine Grass (Stenotaphrum secundatum)
St. Catherine's Lace (Eriogonum giganteum)
Staghorn Sumac (Rhus typhina)
Stalked Bulbine (Bulbine frutescens)
Standing Cypress (Ipomopsis rubra)
Star Jasmine (Trachelospermum jasminoides)
Star Magnolia (Magnolia stellata)
Star of Persia (Allium cristophii)
Starflower Pincushions (Scabiosa stellata)
Starry False Solomon's Seal (Maianthemum stellatum)
Statice (Limonium sinuatum)
Steeplebush (Spiraea tomentosa)
Stemless Gentian (Gentiana acaulis)
Stevia (Stevia rebaudiana)
Sticky Monkeyflower (Diplacus aurantiacus)
Sticky Purple Geranium (Geranium viscosissimum)
Stiff Aster (Ionactis linariifolius)
Stiff Goldenrod (Oligoneuron rigidum)
Stiff Sunflower (Helianthus pauciflorus)
Stinking Hellebore (Helleborus foetidus)
Stock (Matthiola incana)
Stokes' Aster (Stokesia laevis)
Strawberry (Fragaria x ananassa)
Strawberry Begonia (Saxifraga stolonifera)
Strawberry Clover (Trifolium fragiferum)
Strawberry Foxglove (Digitalis × mertonensis)
Strawberry Tree (Arbutus unedo)
Strawflower (Bracteantha bracteata)
Striped Squill (Puschkinia scilloides)
Subterranean Clover (Trifolium subterraneum)
Sugar Maple (Acer saccharum)
Sugarberry (Celtis laevigata)
Sulphur Barrenwort (Epimedium × versicolor)
Sulphur Buckwheat (Eriogonum umbellatum)
Sulphur Cosmos (Cosmos sulphureus)
Sulphur Penstemon (Penstemon attenuatus)
Summer Hyacinth (Galtonia candicans)
Summer Savory (Satureja hortensis)
Summer Snowflake (Leucojum aestivum)
Sundial Lupine (Lupinus perennis)
Sundrops (Oenothera fruticosa)
Sunflower (Helianthus annuus)
Sunn Hemp (Crotalaria juncea)
Sunrose (Helianthemum nummularium)
Sunset Hyssop (Agastache rupestris)
Superb Mariposa Lily (Calochortus superbus)
Surprise Lily (Lycoris squamigera)
Swamp Azalea (Rhododendron viscosum)
Swamp Jessamine (Gelsemium rankinii)
Swamp Leather Flower (Clematis crispa)
Swamp Lily (Crinum americanum)
Swamp Milkweed (Asclepias incarnata)
Swamp Rose (Rosa palustris)
Swamp Sunflower (Helianthus angustifolius)
Swamp Tupelo (Nyssa biflora)
Swamp White Oak (Quercus bicolor)
Swan River Daisy (Brachyscome iberidifolia)
Sweet Alyssum (Lobularia maritima)
Sweet Azalea (Rhododendron arborescens)
Sweet Betsy (Trillium cuneatum)
Sweet Coneflower (Rudbeckia subtomentosa)
Sweet Crabapple (Malus coronaria)
Sweet Fern (Comptonia peregrina)
Sweet Goldenrod (Solidago odora)
Sweet Iris (Iris pallida)
Sweet Mock Orange (Philadelphus coronarius)
Sweet Pea (Lathyrus odoratus)
Sweet Pepperbush (Clethra alnifolia)
Sweet Potato (Ipomoea batatas)
Sweet Scabious (Scabiosa atropurpurea)
Sweet Sultan (Amberboa moschata)
Sweet Violet (Viola odorata)
Sweet William (Dianthus barbatus)
Sweet William Catchfly (Silene armeria)
Sweet Woodruff (Galium odoratum)
Sweetbay Magnolia (Magnolia virginiana)
Sweetbriar Rose (Rosa rubiginosa)
Switchgrass (Panicum virgatum)
Sword Fern (Polystichum munitum)
Tahoka Daisy (Machaeranthera tanacetifolia)
Tall Bellflower (Campanulastrum americanum)
Tall Fescue (Schedonorus arundinaceus)
Tall Goldenrod (Solidago altissima)
Tall Green Milkweed (Asclepias hirtella)
Tall Ironweed (Vernonia gigantea)
Tall Tickseed (Coreopsis tripteris)
Tamarillo (Solanum betaceum)
Tangerine (Citrus reticulata)
Tapertip Hawksbeard (Crepis acuminata)
Tapertip Onion (Allium acuminatum)
Tapioca (Manihot esculenta)
Tarda Tulip (Tulipa tarda)
Taro (Colocasia esculenta)
Tarragon (Artemisia dracunculus)
Tassel Flower (Emilia coccinea)
Tassel Hyacinth (Muscari comosum)
Tasteless Stonecrop (Sedum sexangulare)
Tatarian Aster (Aster tataricus)
Tatsoi (Brassica rapa subsp. narinosa)
Tayberry (Rubus fruticosus x idaeus)
Tazetta Daffodil (Narcissus tazetta)
Tea Oil Camellia (Camellia oleifera)
Tea Olive (Osmanthus fragrans)
Tea Rose (Rosa × odorata)
Teff (Eragrostis tef)
Tennessee Coneflower (Echinacea tennesseensis)
Tenpetal Blazingstar (Mentzelia decapetala)
Tepary Bean (Phaseolus acutifolius)
Texas Bluebonnet (Lupinus texensis)
Texas Kidneywood (Eysenhardtia texana)
Texas Lantana (Lantana urticoides)
Texas Mountain Laurel (Sophora secundiflora)
Texas Olive (Cordia boissieri)
Texas Paintbrush (Castilleja indivisa)
Texas Sage (Leucophyllum frutescens)
Texas Sedge (Carex texensis)
Thickleaf Beardtongue (Penstemon pachyphyllus)
Thimbleberry (Rubus parviflorus)
Thin-Leaved Sunflower (Helianthus decapetalus)
Thinleaf Huckleberry (Vaccinium membranaceum)
Thornless Blackberry (Rubus fruticosus)
Thornless Boysenberry (Rubus ursinus x idaeus)
Threadleaf Coreopsis (Coreopsis verticillata)
Threadleaf Phacelia (Phacelia linearis)
Three-Toothed Cinquefoil (Sibbaldiopsis tridentata)
Thryallis (Galphimia glauca)
Thunberg Spirea (Spiraea thunbergii)
Thyme (Thymus vulgaris)
Tickseed Sunflower (Bidens aristosa)
Tidy Tips (Layia platyglossa)
Tiger Flower (Tigridia pavonia)
Tiger Lily (Lilium lancifolium)
Titi (Cyrilla racemiflora)
Toad Lily (Tricyrtis hirta)
Toadshade (Trillium sessile)
Tomatillo (Physalis philadelphica)
Tomato (Solanum lycopersicum)
Tommasini's Crocus (Crocus tommasinianus)
Torch Azalea (Rhododendron kaempferi)
Torch Ginger (Etlingera elatior)
Tower of Jewels (Echium wildpretii)
Toyon (Heteromeles arbutifolia)
Trailing Abutilon (Abutilon megapotamicum)
Trailing African Daisy (Osteospermum fruticosum)
Trailing Arbutus (Epigaea repens)
Trailing Ice Plant (Lampranthus spectabilis)
Trailing Indigo Bush (Dalea greggii)
Trailing Lantana (Lantana montevidensis)
Trailing Phlox (Phlox nivalis)
Trailing Snowberry (Symphoricarpos mollis)
Tree Dahlia (Dahlia imperialis)
Tree Peony (Paeonia suffruticosa)
Tricolor Chrysanthemum (Glebionis carinatum)
Tropical Sage (Salvia coccinea)
Trumpet Creeper (Campsis radicans)
Tube Clematis (Clematis heracleifolia)
Tuberose (Polianthes tuberosa)
Tuberous Begonia (Begonia × tuberhybrida)
Tufted Evening Primrose (Oenothera caespitosa)
Tufted Hairgrass (Deschampsia cespitosa)
Tufted Poppy (Eschscholzia caespitosa)
Tulip (Tulipa gesneriana)
Tulip Tree (Liriodendron tulipifera)
Tumbleweed Onion (Allium schubertii)
Turk's Cap (Malvaviscus arboreus)
Turk's Cap Lily (Lilium superbum)
Turkestan Onion (Allium karataviense)
Turkestan Tulip (Tulipa turkestanica)
Turkish Sage (Phlomis russeliana)
Turkish Speedwell (Veronica liwanensis)
Turmeric (Curcuma longa)
Turnip (Brassica rapa)
Turpentine Bush (Ericameria laricifolia)
Twinberry Honeysuckle (Lonicera involucrata)
Twinflower (Linnaea borealis)
Twinflower Dyschoriste (Dyschoriste oblongifolia)
Twinspur (Diascia barberae)
Two-Row Stonecrop (Phedimus spurius)
Twoneedle Pinyon (Pinus edulis)
Upland White Goldenrod (Oligoneuron album)
Utah Serviceberry (Amelanchier utahensis)
Utah Sweetvetch (Hedysarum boreale)
Valley Oak (Quercus lobata)
Vanhoutte Spirea (Spiraea × vanhouttei)
Vanilla (Vanilla planifolia)
Vanilla Leaf (Achlys triphylla)
Velvet Mesquite (Prosopis velutina)
Venus Penstemon (Penstemon venustus)
Vernal Witch Hazel (Hamamelis vernalis)
Vine Hill Manzanita (Arctostaphylos densiflora)
Vine Maple (Acer circinatum)
Violet Trumpet Vine (Clytostoma callistegioides)
Violet Wood Sorrel (Oxalis violacea)
Virgin River Brittlebush (Encelia virginensis)
Virgin's Bower (Clematis virginiana)
Virginal Mock Orange (Philadelphus × virginalis)
Virginia Bluebells (Mertensia virginica)
Virginia Creeper (Parthenocissus quinquefolia)
Virginia Mountain Mint (Pycnanthemum virginianum)
Virginia Rose (Rosa virginiana)
Virginia Spiderwort (Tradescantia virginiana)
Virginia Stock (Malcolmia maritima)
Virginia Strawberry (Fragaria virginiana)
Virginia Sweetspire (Itea virginica)
Wafer Ash (Ptelea trifoliata)
Walking Iris (Neomarica gracilis)
Walking Onion (Allium x proliferum)
Wall Germander (Teucrium chamaedrys)
Wall Rock Cress (Arabis caucasica)
Wallflower (Erysimum cheiri)
Walnut (Juglans nigra)
Walnut (Juglans regia)
Walter's Violet (Viola walteri)
Warminster Broom (Cytisus × praecox)
Wasabi (Eutrema japonicum)
Washington Hawthorn (Crataegus phaenopyrum)
Water Hawthorn (Aponogeton distachyos)
Water Hyssop (Bacopa monnieri)
Water Poppy (Hydrocleys nymphoides)
Water Tupelo (Nyssa aquatica)
Watercress (Nasturtium officinale)
Waterlily Tulip (Tulipa kaufmanniana)
Watermelon (Citrullus lanatus)
Wavy Hairgrass (Deschampsia flexuosa)
Wax Begonia (Begonia cucullata)
Wax Currant (Ribes cereum)
Weeping Bottlebrush (Callistemon viminalis)
Weeping Forsythia (Forsythia suspensa)
Weigela (Weigela florida)
Western Aster (Symphyotrichum ascendens)
Western Azalea (Rhododendron occidentale)
Western Buttercup (Ranunculus occidentalis)
Western Columbine (Aquilegia formosa)
Western Foamflower (Tiarella trifoliata)
Western Goldentop (Euthamia occidentalis)
Western Maidenhair Fern (Adiantum aleuticum)
Western Sunflower (Helianthus occidentalis)
Western Sweetshrub (Calycanthus occidentalis)
Western Wallflower (Erysimum capitatum)
Western White Clematis (Clematis ligusticifolia)
Western Wild Ginger (Asarum caudatum)
Wheat (Triticum aestivum)
Wheat Celosia (Celosia spicata)
White Angel's Trumpet (Brugmansia suaveolens)
White Brodiaea (Triteleia hyacinthina)
White Clover (Trifolium repens)
White Forsythia (Abeliophyllum distichum)
White Frangipani (Plumeria obtusa)
White Ginger Lily (Hedychium coronarium)
White Laceflower (Orlaya grandiflora)
White Meadowsweet (Spiraea alba)
White Mustard (Sinapis alba)
White Oak (Quercus alba)
White Panicle Aster (Symphyotrichum lanceolatum)
White Peach (Prunus persica)
White Prairie Clover (Dalea candida)
White Prickly Poppy (Argemone albiflora)
White Rain Lily (Zephyranthes candida)
White Rose of York (Rosa × alba)
White Sage (Salvia apiana)
White Snakeroot (Ageratina altissima)
White Stonecrop (Sedum album)
White Trout Lily (Erythronium albidum)
White Turtlehead (Chelone glabra)
White Wand Beardtongue (Penstemon tubaeflorus)
White Wild Indigo (Baptisia alba)
White Wood Aster (Eurybia divaricata)
White-Veined Pipevine (Aristolochia fimbriata)
Whiteleaf Manzanita (Arctostaphylos viscida)
Whitethorn Ceanothus (Ceanothus cordulatus)
Whorled Milkweed (Asclepias verticillata)
Widow's Cross (Sedum pulchellum)
Wild Bergamot (Monarda fistulosa)
Wild Garlic (Allium canadense)
Wild Geranium (Geranium maculatum)
Wild Ginger (Asarum canadense)
Wild Hyacinth (Camassia scilloides)
Wild Petunia (Ruellia humilis)
Wild Quinine (Parthenium integrifolium)
Wild Senna (Senna hebecarpa)
Wild Stonecrop (Sedum ternatum)
Williams Camellia (Camellia × williamsii)
Willow Gentian (Gentiana asclepiadea)
Willow Oak (Quercus phellos)
Willowleaf Aster (Symphyotrichum praealtum)
Willowleaf Cotoneaster (Cotoneaster salicifolius)
Willowleaf Sunflower (Helianthus salicifolius)
Wineberry (Rubus phoenicolasius)
Winecup (Callirhoe involucrata)
Winged Everlasting (Ammobium alatum)
Winged Sumac (Rhus copallinum)
Wingstem (Verbesina alternifolia)
Winter Aconite (Eranthis hyemalis)
Winter Heath (Erica carnea)
Winter Honeysuckle (Lonicera fragrantissima)
Winter Jasmine (Jasminum nudiflorum)
Winter Savory (Satureja montana)
Winterberry (Ilex verticillata)
Wintergreen (Gaultheria procumbens)
Wintermelon (Benincasa hispida)
Wintersweet (Chimonanthus praecox)
Wishbone Flower (Torenia fournieri)
Wood Anemone (Anemone nemorosa)
Wood Cranesbill (Geranium sylvaticum)
Wood Lily (Lilium philadelphicum)
Woodbine Honeysuckle (Lonicera periclymenum)
Woodland Phlox (Phlox divaricata)
Woodland Sage (Salvia nemorosa)
Woodland Spider Lily (Hymenocallis occidentalis)
Woodland Sunflower (Helianthus divaricatus)
Woodland Tobacco (Nicotiana sylvestris)
Woodland Tulip (Tulipa sylvestris)
Woods' Rose (Rosa woodsii)
Woolly Blue Curls (Trichostema lanatum)
Woolly Butterfly Bush (Buddleja marrubiifolia)
Woolly Milkweed (Asclepias vestita)
Woolly Pipevine (Aristolochia tomentosa)
Woolly Speedwell (Veronica pectinata)
Woolly Stemodia (Stemodia lanata)
Woolly Sunflower (Eriophyllum lanatum)
Woolly Thyme (Thymus pseudolanuginosus)
Woolly Yarrow (Achillea tomentosa)
Woollypod Milkweed (Asclepias eriocarpa)
Wright's Buckwheat (Eriogonum wrightii)
Wrinkleleaf Goldenrod (Solidago rugosa)
Yacon (Smallanthus sonchifolius)
Yak Rhododendron (Rhododendron yakushimanum)
Yam (Dioscorea villosa)
Yam (Dioscorea)
Yaupon Holly (Ilex vomitoria)
Yellow Bells (Tecoma stans)
Yellow Buckeye (Aesculus flava)
Yellow Bush Lupine (Lupinus arboreus)
Yellow Coneflower (Echinacea paradoxa)
Yellow Corydalis (Pseudofumaria lutea)
Yellow Foxglove (Digitalis grandiflora)
Yellow Giant Hyssop (Agastache nepetoides)
Yellow Horned Poppy (Glaucium flavum)
Yellow Ice Plant (Delosperma nubigenum)
Yellow Lady's Slipper (Cypripedium parviflorum)
Yellow Loosestrife (Lysimachia punctata)
Yellow Mariposa Lily (Calochortus luteus)
Yellow Monkeyflower (Mimulus guttatus)
Yellow Oleander (Thevetia peruviana)
Yellow Passionflower (Passiflora lutea)
Yellow Rabbitbrush (Chrysothamnus viscidiflorus)
Yellow Rain Lily (Zephyranthes citrina)
Yellow Sand Verbena (Abronia latifolia)
Yellow Sneezeweed (Helenium amarum)
Yellow Spider Lily (Lycoris aurea)
Yellow Spiderflower (Cleome lutea)
Yellow Sundrops (Calylophus serrulatus)
Yellow Trillium (Trillium luteum)
Yellow Trout Lily (Erythronium americanum)
Yellow Wild Indigo (Baptisia sphaerocarpa)
Yellowwood (Cladrastis kentukea)
Yerba Buena (Clinopodium douglasii)
Yerba Mansa (Anemopsis californica)
Yesterday Today and Tomorrow (Brunfelsia pauciflora)
Yoshino Cherry (Prunus × yedoensis)
Yulan Magnolia (Magnolia denudata)
Yunnan Meadow Rue (Thalictrum delavayi)
Yuzu (Citrus junos)
Zigzag Goldenrod (Solidago flexicaulis)
Zinnia (Zinnia violacea)
Zizotes Milkweed (Asclepias oenotheroides)
Zonal Geranium (Pelargonium × hortorum)
Zucchini (Cucurbita pepo)
Plant Witch