1502 plants found
Species Name Common Name Family Name
Abelia x grandiflora 'Edward Goucher' Edward Goucher abelia Caprifoliaceae
Abies amabilis Amabilis fir, Pacific silver fir Pinaceae
Abies balsamea 'Nana' dwarf balsam fir Pinaceae
Abies cephalonica 'Meyer's Dwarf' Meyer's Dwarf fir, dwarf Greek fir Pinaceae
Abies concolor silver fir, Colorado fir, white fir Pinaceae
Abies fraseri Fraser fir Pinaceae
Abies grandis grand fir Pinaceae
Abies koreana Korean fir Pinaceae
Abutilon x hybridum Chinese lantern, parlour maple, flowering maple Malvaceae
Acaena inermis 'Purpurea' purple sheep's burr Rosaceae
Acalypha hispida chenille plant Euphorbiaceae
Acalypha pendula dwarf chenille plant, firetail Euphorbiaceae
Acanthus mollis common bear’s breeches Acanthaceae
Acer buergerianum trident maple Sapindaceae
Acer campestre field maple, hedge maple Sapidinaceae
Acer circinatum vine maple Sapindaceae
Acer glabrum var. douglasii Douglas maple, Rocky Mountain maple Sapindaceae
Acer griseum paperbark maple Sapindaceae
Acer japonicum 'Aconitifolium' fernleaf maple, full moon maple Sapindaceae
Acer macrophyllum bigleaf maple Sapindaceae
Acer negundo Manitoba maple, box elder Sapindaceae
Acer palmatum Japanese maple Sapindaceae
Acer palmatum 'Koto No Ito' Koto No Ito maple Sapindaceae
Acer palmatum 'Shishio' Chishio Japanese maple Sapindaceae
Acer palmatum 'Shojo Nomura' Shojo Nomura maple Sapindaceae
Acer palmatum 'Tsuma Beni' red nail maple Sapindaceae
Acer palmatum Atropurpureum Group red-leaf Japanese maple Sapindaceae
Acer palmatum Dissectum Atropurpureum Group dissected red Japanese maple Sapindaceae
Acer pensylvanicum moosewood maple Sapindaceae
Acer platanoides Norway maple Sapindaceae
Acer platanoides 'Crimson King' Crimson King Norway maple Sapindaceae
Acer platanoides 'Crimson Sentry' Crimson Sentry maple Sapindaceae
Acer platanoides 'Princeton Gold' Princeton Gold Norway maple Sapindaceae
Acer pseudoplatanus sycamore maple Sapindaceae
Acer rubrum red maple Sapindaceae
Acer rubrum 'Bowhall' Bowhall maple Sapindaceae
Acer rubrum 'Franksred' Red Sunset maple Sapindaceae
Acer saccharinum silver maple Sapindaceae
Acer saccharum sugar maple Sapindaceae
Acer shirasawanum 'Aureum' golden full moon maple Sapindaceae
Acer tataricum ssp. ginnala Amur maple, Tatarian maple Sapindaceae
Acer tegmentosum 'Joe Witt' Manchurian snakebark maple, Manchu striped maple, Joe Witt striped maple Sapindaceae
Acer x freemanii Freeman maple, columnar red maple Sapindaceae
Achillea filipendulina 'Gold Plate' Gold Plate yarrow Asteraceae
Achillea millefolium common yarrow Asteraceae
Achillea millefolium cvs. yarrow cultivars Asteraceae
Aconitum carmichaelii autumn monkshood Ranunculaceae
Aconitum napellus monkshood Ranunculaceae
Acorus calamus 'Variegatus' variegated sweet flag Acoraceae
Acorus gramineus 'Variegatus' variegated sweet flag, variegated Japanese flag Acoraceae
Actaea pachypoda white baneberry, doll's eyes Ranunculaceae
Actaea simplex (Atropurpurea Group) dark-leaved bugbane, cimicifuga, Kamchatka bugbane Ranunculaceae
Actinidia arguta hardy kiwi Actinidiaceae
Actinidia deliciosa fuzzy kiwi Actinidiaceae
Actinidia kolomikta actinidia Actinidiaceae
Actinidia macrosperma actinidia Actinidiaceae
Adiantum pedatum maidenhair fern Pteridaceae
Adiantum spp. maidenhair fern Pteridaceae
Aechmea fasciata silver urn plant, silver vase Bromeliaceae
Aegopodium podagraria 'Variegatum' goutweed, bishop's weed Apiaceae
Aeschynanthus spp. lipstick plant Gesneriaceae
Aesculus chinensis Chinese horse chestnut Sapindaceae
Aesculus flava yellow buckeye Sapindaceae
Aesculus hippocastanum common horse chestnut Sapindaceae
Aesculus x carnea 'Briotii' ruby horse chestnut, red horse chestnut Sapindaceae
Agapanthus (incl. hybrids) African lily, lily of the Nile Amaryllidaceae
Agastache foeniculum anise-hyssop, giant hyssop Lamiaceae
Agastache mexicana agastache, Mexican hyssop Lamiaceae
Agave americana century plant Asparagaceae
Agave filifera threadleaf agave Asparagaceae
Ageratina altissima 'Chocolate' white snakeroot Asteraceae
Ageratum houstonianum floss flower Asteraceae
Aglaonema cvs. Chinese evergreen Araceae
Agrostis canina velvet bentgrass Poaceae
Agrostis capillaris colonial bentgrass Poaceae
Agrostis stolonifera creeping bentgrass Poaceae
Ailanthus altissima tree of heaven Simaroubaceae
Ajuga pyramidalis 'Metallica Crispa' crisp leaf carpet bugle Lamiaceae
Ajuga reptans bugleweed, carpet bugleweed Lamiaceae
Ajuga x tenorii 'Chocolate Chip' Chocolate Chip carpet bugle Lamiaceae
Akebia quinata chocolate vine Lardizabalaceae
Albizia julibrissin silk tree, mimosa Fabaceae
Alcea rosea hollyhock Malvaceae
Alchemilla mollis lady's mantle Rosaceae
Allium (incl. hybrids) hybrid ornamental onion Amaryllidaceae
Allium ampeloprasum (Porrum Group) leek Amaryllidaceae
Allium cepa bulb onion, spring onion, shallot Amaryllidaceae
Allium cernuum nodding onion Amaryllidaceae
Allium cristophii (incl. hybrid cvs.) ornamental onion, Persian onion, star of Persia Amaryllidaceae
Allium fistulosum green onion, Welsh onion, Japanese bunching onion Amaryllidaceae
Allium giganteum tall ornamental onion Amaryllidaceae
Allium hollandicum (incl. hybrid cvs.) ornamental onion, Persian onion Amaryllidaceae
Allium moly yellow garlic Amaryllidaceae
Allium sativum garlic Amaryllidaceae
Allium schoenoprasum chives Amaryllidaceae
Allium sphaerocephalon drumstick allium Amaryllidaceae
Allium tuberosum garlic chives, Chinese chives Amaryllidaceae
Alnus hirsuta Manchurian alder Betulaceae
Alnus rubra red alder Betulaceae
Alocasia 'Amazonica' African mask Araceae
Aloe vera healing plant Asphodelaceae
Alstroemeria cvs. alstroemeria, Peruvian lily Alstroemeriaceae
Alyssum montanum 'Berggold' mountain gold alyssum Brassicaceae
Amelanchier alnifolia Saskatoon berry, Pacific serviceberry Rosaceae
Amelanchier canadensis Canadian serviceberry Rosaceae
Anaphalis margaritacea pearly everlasting Asteraceae
Andromeda polifolia bog rosemary Ericaceae
Andropogon gerardii big bluestem grass Poaceae
Anemanthele lessoniana New Zealand wind grass, wind grass, pheasant grass Poaceae
Anemone coronaria anemone Ranunculaceae
Anemone sylvestris snowdrop anemone Ranunculaceae
Anemone x hybrida Japanese windflower, anemone Ranunculaceae
Anemonoides blanda ( syn. Anemone blanda ) Greek windflower, blue wood anemone Ranunculaceae
Anethum graveolens dill Apiaceae
Angelica gigas giant angelica Apiaceae
Angelonia angustifolia summer snapdragon Plantaginaceae
Antennaria dioica pussy toes Asteraceae
Anthurium andraeanum (incl. hybrid cvs.) anthurium, flamingo flower Araceae
Antirrhinum majus snapdragon Plantaginaceae
Aphelandra squarrosa zebra plant Acanthaceae
Aquilegia (hybrid cvs.) hybrid columbine Ranunculaceae
Aquilegia vulgaris European columbine Ranunculaceae
Arabis caucasica (incl. hybrid cvs.) rock cress, pink wall cress Brassicaceae
Aralia elata Japanese angelica tree Araliaceae
Araucaria araucana monkey puzzle tree Araucariaceae
Araucaria heterophylla Norfolk Island pine Araucariaceae
Arbutus menziesii arbutus, madrona Ericaceae
Arbutus unedo strawberry tree Ericaceae
Arctostaphylos uva-ursi bearberry, kinnikinnick Ericaceae
Arctotis x hybrida African daisy Asteraceae
Arenaria montana mountain sandwort Caryophyllaceae
Argyranthemum frutescens cvs. Marguerite daisy, cobbitty daisy Asteraceae
Argyrocytisus battandieri atlas broom, pineapple broom Fabaceae
Arisaema sikokianum Japanese Jack-in-the-pulpit Araceae
Aristolochia sp. pipe vine, Dutchman's pipe Aristolochiaceae
Armeria maritima thrift Plumbaginaceae
Armeria pseudarmeria perennial armeria Plumbaginaceae
Armeria x hybrida hybrid thrift Plumbaginaceae
Armoracia rusticana horseradish Brassicaceae
Aronia melanocarpa black chokeberry Rosaceae
Arrhenatherum elatius var. bulbosum 'Variegatum' variegated bulbous oat grass Poaceae
Artemisia 'Powis Castle' Powis Castle artemisia Asteraceae
Artemisia dracunculus French tarragon Asteraceae
Artemisia lactiflora Guizhou Group Guizhou white mugwort Asteraceae
Artemisia ludoviciana 'Valerie Finnis' Valerie Finnis artemisia Asteraceae
Artemisia schmidtiana silvermound, wormwood, silver mound Asteraceae
Artemisia stelleriana 'Silver Brocade' Silver Brocade artemisia Asteraceae
Arum italicum 'Pictum' painted arum Araceae
Aruncus dioicus goat's beard Rosaceae
Asarum canadense Canadian wild ginger Aristolochiaceae
Asarum caudatum western wild ginger Aristolochiaceae
Asarum europaeum European wild ginger Aristolochiaceae
Asimina triloba pawpaw, custard apple Annonaceae
Asparagus densiflorus 'Myersii' foxtail fern Asparagaceae
Asparagus densiflorus 'Sprengeri' Sprengeri asparagus fern Asparagaceae
Asparagus officinalis asparagus Asparagaceae
Asparagus retrofractus Ming fern, pom pom asparagus fern Asparagaceae
Asparagus setaceus plumosus fern Asparagaceae
Asparagus virgatus tree fern, African broom fern Asparagaceae
Asplenium nidus bird's-nest fern Aspleniaceae
Asplenium scolopendrium Hart's tongue fern Aspleniaceae
Aster alpinus alpine aster Asteraceae
Aster spp. ( syn. Symphyotrichum - most ) common aster Asteraceae
Aster x frikartii 'Monch' Frikart aster Asteraceae
Astilbe chinensis Chinese astilbe Saxifragaceae
Astilbe x arendsii cvs. hybrid astilbe, garden astilbe Saxifragaceae
Astilboides tabularis shieldleaf rodgersia Saxifragaceae
Astrantia major masterwort, astrantia Apiaceae
Athyrium filix-femina lady fern Athyriaceae
Athyrium niponicum var. pictum Japanese painted fern Athyriaceae
Aubrieta x cultorum common rock cress Brassicaceae
Aucuba japonica Japanese aucuba, Japanese laurel Garryaceae
Aurinia saxatilis perennial alyssum, basket-of-gold, gold dust alyssum Brassicaceae
Azolla filiculoides Fairy moss, mosquito fern Salviniaceae
Basella alba 'Rubra' vine spinach, Malabar spinach Basellaceae
Beaucarnea recurvata ponytail palm Asparagaceae
Begonia grandis hardy begonia, giant begonia Begoniaceae
Begonia maculata ( incl. hybrid cvs.) angel wing begonia, spotted begonia, polka dot begonia Begoniaceae
Begonia masoniana iron cross begonia Begoniaceae
Begonia rex (incl. hybrids) rex begonia Begoniaceae
Begonia x hiemalis Hiemalis begonia, Rieger begonia Begoniaceae
Begonia x hybrida Dragon Wing begonia Begoniaceae
Begonia x semperflorens cultorum fibrous begonia, wax begonia Begoniaceae
Begonia x tuberhybrida tuberous begonia Begoniaceae
Bellis perennis English daisy Asteraceae
Berberis julianae wintergreen barberry Berberidaceae
Berberis microphylla ( syn. B. buxifolia ) box leaf barberry, dwarf Magellan barberry Berberidaceae
Berberis thunbergii Japanese barberry Berberidaceae
Berberis verruculosa warty barberry Berberidaceae
Berberis x gladwynensis 'William Penn' William Penn barberry Berberidaceae
Berberis x stenophylla narrow-leaf barberry Berberidaceae
Bergenia cordifolia ( syn. of B. crassifolia ) heartleaf bergenia Saxifragaceae
Beta vulgaris (Cicla Group) Swiss chard Amaranthaceae
Beta vulgaris (Conditiva Group) garden beet Amaranthaceae
Betula alleghaniensis yellow birch Betulaceae
Betula lenta cherry birch, sweet birch, black birch Betulaceae
Betula nigra river birch Betulaceae
Betula papyrifera paper birch Betulaceae
Betula pendula European white birch, silver birch Betulaceae
Betula utilis subsp. albosinensis Chinese red birch, Chinese paper birch Betulaceae
Betula utilis var. jacquemontii Jacquemont birch Betulaceae
Bidens ferulifolia (incl. hybrid cvs.) bidens Asteraceae
Blechnum gibbum 'Silver Lady' Silver Lady fern, dwarf tree fern Blechnaceae
Blechnum spicant deer fern Blechnaceae
Bletilla striata hardy orchid, Chinese ground orchid Orchidaceae
Boltonia asteroides false aster, Snowbank aster Asteraceae
Bougainvillea cv. paper flower Nyctaginaceae
Brachyglottis (incl. hybrids) ragwort, daisy bush Asteraceae
Brachyscome iberidifolia Swan River daisy Asteraceae
Brachyscome multifida cut-leaf daisy, rock daisy Asteraceae
Brassica oleracea (Acephala Group) kale, collard Brassicaceae
Brassica oleracea (Botrytis Group) cauliflower Brassicaceae
Brassica oleracea (Capitata Group) cabbage, head cabbage Brassicaceae
Brassica oleracea (Gemmifera Group) Brussels sprout Brassicaceae
Brassica oleracea (Italica Group) broccoli Brassicaceae
Brassica rapa var. rapa turnip Brassicaceae
Briza media quaking grass Poaceae
Brugmansia spp. angels' trumpets Solanaceae
Brunnera macrophylla Siberian bugloss Boraginaceae
Bryophyta (Division) moss (various)
Buddleja (hybrid cvs.) hybrid butterfly bush Scrophulariaceae
Buddleja davidii butterfly bush Scrophulariaceae
Butomus umbellatus flowering rush Butomaceae
Buxus microphylla Asian boxwood, Korean boxwood Buxaceae
Buxus sempervirens common boxwood Buxaceae
Buxus sinica var. insularis 'Winter Gem' Korean littleleaf boxwood, winter gem boxwood Buxaceae
Caladium bicolor caladium, angel wings Araceae
Calamagrostis x acutiflora feather reed grass Poaceae
Calceolaria (Herbeohybrida Group) pocketbook plant, pouch flower, lady's slipper Calceolariaceae
Calceolaria integrifolia pouch flower Calceolariaceae
Calibrachoa x hybrida calibrachoa, mini petunia, trailing petunia Solanaceae
Callicarpa bodinieri var. giraldii 'Profusion' beautyberry Lamiaceae
Callicarpa dichotoma x kwangtungensis Pearl Glam™ beautyberry, hybrid callicarpa Lamiaceae
Calluna vulgaris heather Ericaceae
Calocedrus decurrens California incense cedar Cupressaceae
Caltha palustris yellow marsh marigold Ranunculaceae
Calystegia sepium hedge bindweed, morning glory Convolvulaceae
Camassia spp. and cvs. camas, wild hyacinth Asparagaceae
Camellia japonica common camellia, Japanese camellia Theaceae
Camellia sasanqua sasanqua camellia Theaceae
Campanula carpatica Carpathian harebell, canterbury bells Campanulaceae
Campanula glomerata clustered bellflower Campanulaceae
Campanula medium Canterbury bells Campanulaceae
Campanula persicifolia peach-leaved bellflower Campanulaceae
Campanula poscharskyana Serbian campanula, Serbian bellflower Campanulaceae
Campanula punctata (incl. hybrids) spotted bellflower Campanulaceae
Campanula trachelium nettle-leaved bellflower Campanulaceae
Campsis radicans trumpet vine, common trumpet creeper Bignoniaceae
Campsis x tagliabuana 'Madame Galen' Madam Galam trumpet vine Bignoniaceae
Canna x generalis canna, garden cannas Cannaceae
Cannabis sativa marijuana Cannabaceae
Capsella bursa-pastoris shepherd's purse Brassicaceae
Capsicum annuum (ornamental cvs.) ornamental pepper Solanaceae
Capsicum annuum var. annuum Grossum Group sweet bell pepper Solanaceae
Capsicum spp. spicy hot pepper, chili pepper Solanaceae
Caragana arborescens Siberian peashrub Fabaceae
Cardamine oligosperma snapweed, little western bittercress Brassicaceae
Carex buchananii leatherleaf sedge Cyperaceae
Carex comans Frosted Curls sedge, Bronze sedge Cyperaceae
Carex conica 'Snowline' variegated Japanese sedge Cyperaceae
Carex elata 'Aurea' Bowles' golden sedge Cyperaceae
Carex flacca blue creeping sedge Cyperaceae
Carex morrowii 'Ice Dance' frosted sedge, creeping Japanese sedge Cyperaceae
Carex oshimensis 'Evergold' Evergold Japanese sedge Cyperaceae
Carex talbotii ( syn. C. berggrenii ) dwarf bronze creeping sedge Cyperaceae
Carex testacea copper hair sedge, New Zealand orange sedge Cyperaceae
Carpinus betulus European hornbeam Betulaceae
Carpinus fangiana Fang's hornbeam, monkey tail hornbeam Betulaceae
Carpinus japonica Japanese hornbeam Betulaceae
Caryopteris incana 'Jason' Sunshine Blue bluebeard Verbenaceae
Caryopteris x clandonensis bluebeard Verbenaceae
Caryota mitis fishtail palm Arecaceae
Castanea sativa sweet chestnut Fagaceae
Castanospermum australe lucky bean, Moreton Bay chestnut Fabaceae
Castilleja spp. Indian paintbrush, harsh paintbrush Orobanchaceae
Catalpa bignonioides southern catalpa Bignoniaceae
Catalpa speciosa western catalpa, northern catalpa Bignoniaceae
Ceanothus gloriosus 'Point Reyes' Point Reyes creeper Rhamnaceae
Ceanothus thyrsiflorus 'Victoria' Victoria lilac, summer lilac, California lilac Rhamnaceae
Ceanothus x delileanus 'Gloire de Versailles' hybrid California lilac Rhamnaceae
Cedrus atlantica Glauca Group blue Atlas cedar Pinaceae
Cedrus deodara Deodar cedar Pinaceae
Cedrus libani cedar of Lebanon Pinaceae
Celastrus scandens American bittersweet Celastraceae
Celosia argentea ( syn. C. cristata ) cockscomb, plumed celosia Amaranthaceae
Centaurea montana bachelor's buttons Asteraceae
Centaurea stoebe spotted knapweed Asteraceae
Centranthus ruber red valerian, Jupiter's beard Caprifoliaceae
Cephalanthus occidentalis button bush Rubiaceae
Cephalocereus senilis old-man cactus Cactaceae
Cephalotaxus harringtonia 'Fastigiata' columnar false yew, Japanese plum-yew Cephalotaxaceae
Cerastium glomeratum ssp. vulgare mouse-eared chickweed Caryophyllaceae
Cerastium tomentosum snow-in-summer Caryophyllaceae
Ceratostigma plumbaginoides plumbago, leadwort Plumbaginaceae
Cercidiphyllum japonicum katsura, Japanese katsura tree Cercidiphyllaceae
Cercis canadensis redbud Fabaceae
Ceropegia linearis ssp. woodii string of hearts, rosary vine Apocynaceae
Chaenomeles speciosa flowering quince Rosaceae
Chaenomeles x superba dwarf quince, hybrid flowering quince Rosaceae
Chamaecyparis lawsoniana Lawson cypress, Port Orford cypress Cupressaceae
Chamaecyparis obtusa cvs. Hinoki false cypress Cupressaceae
Chamaecyparis pisifera false cypress, sawara cypress Cupressaceae
Chamaecyparis pisifera 'Boulevard' Boulevard false cypress Cupressaceae
Chamaecyparis pisifera 'Filifera Aurea' gold threadleaf false cypress Cupressaceae
Chamaedorea elegans parlour palm, neanthe bella palm Arecaceae
Chamaemelum nobile Roman chamomile Asteraceae
Chamelaucium spp. wax flower Myrtaceae
Chamerion angustifolium ( syn. Epilobium ) fireweed Onagraceae
Chasmanthium latifolium northern sea oats Poaceae
Chenopodium album lamb's quarters , pigweed Amaranthaceae
Chlorophytum comosum spider plant, airplane plant Asparagaceae
Choisya ternata Mexican mock orange Rutaceae
Choisya x dewitteana 'Aztec Pearl' Mexican mock orange Rutaceae
Chrysanthemum morifolium (incl. hybrid cvs.) garden mum, florist's mum Asteraceae
Cirsium arvense Canada thistle Asteraceae
Cirsium vulgare bull thistle Asteraceae
Cissus alata ( syn. C. rhombifolia ) grape ivy, Danish ivy Vitaceae
Cissus antarctica kangaroo vine Vitaceae
Cissus discolor tapestry vine, Rex begonia vine Vitaceae
Cistus x canescens rock rose Cistaceae
Cistus x corbariensis rock rose Cistaceae
Cistus x pulverulentus 'Sunset' Sunset rock rose Cistaceae
Citrullus lanatus watermelon Cucurbitaceae
Citrus limon (incl. hybrids) lemon Rutaceae
Citrus x latifolia Persian lime Rutaceae
Citrus x paradisi grapefruit Rutaceae
Clematis 'Nelly Moser' Nelly Moser clematis Ranunculaceae
Clematis alpina alpine clematis Ranunculaceae
Clematis armandii evergreen clematis Ranunculaceae
Clematis montana anemone clematis Ranunculaceae
Clematis spp. clematis Ranunculaceae
Clematis tangutica Tangutica clematis Ranunculaceae
Clematis vitalba traveller's joy Ranunculaceae
Cleome hassleriana spider flower Cleomaceae
Clerodendrum trichotomum Harlequin glorybower Lamiaceae
Clethra alnifolia summersweet, sweet pepperbush Clethraceae
Clethra barbinervis Japanese sweet shrub, Chinese summersweet Clethraceae
Clivia miniata (incl. hybrids) bush lily, kaffir lily Amaryllidaceae
Codiaeum variegatum var. pictum croton Euphorbiaceae
Coffea arabica coffee plant, Arabian coffee Rubiaceae
Colchicum autumnale autumn crocus Liliaceae
Colocasia esculenta taro root, coloyam, elephant's ear Araceae
Consolida larkspur Ranunculaceae
Convallaria majalis lily-of-the-valley Asparagaceae
Cordyline indivisa dracaena spike, mountain cabbage tree Asparagaceae
Coreopsis auriculata 'Zamfir' Zamfir coreopsis Asteraceae
Coreopsis grandiflora large flowered coreopsis Asteraceae
Coreopsis lanceolata lanceleaf coreopsis Asteraceae
Coreopsis rosea pink coreopsis, pink tickseed Asteraceae
Coreopsis spp. & cvs. coreopsis Asteraceae
Coreopsis verticillata threadleaf coreopsis, whorled tickseed Asteraceae
Coriandrum sativum cilantro, coriander, Chinese parsley Apiaceae
Cornus 'Eddie's White Wonder' Eddie's White Wonder dogwood Cornaceae
Cornus alba Siberian dogwood, white dogwood Cornaceae
Cornus alba 'Elegantissima' silverleaf dogwood, Siberian dogwood Cornaceae
Cornus canadensis bunchberry Cornaceae
Cornus controversa giant dogwood Cornaceae
Cornus florida eastern flowering dogwood, pink flowering dogwood Cornaceae
Cornus kousa cvs. Chinese dogwood, kousa dogwood Cornaceae
Cornus kousa var. chinensis Chinese dogwood, kousa dogwood Cornaceae
Cornus mas Cornelian dogwood, Cornelian cherry Cornaceae
Cornus nuttallii Pacific dogwood Cornaceae
Cornus racemosa grey dogwood Cornaceae
Cornus sericea red osier dogwood Cornaceae
Cornus sericea 'Flaviramea' yellow twig dogwood Cornaceae
Cornus x rutgersensis 'Rutcan' Constellation dogwood Cornaceae
Cortaderia selloana pampas grass Poaceae
Corylopsis pauciflora buttercup winter hazel Hamamelidaceae
Corylopsis spicata spike witchhazel, spike winter hazel Hamamelidaceae
Corylus avellana European filbert, common hazel Betulaceae
Corylus avellana 'Contorta' contorted European filbert, Harry Lauder's walking stick, corkscrew hazel Betulaceae
Corylus colurna Turkish filbert, Turkish hazel Betulaceae
Corylus cornuta var. californica beaked hazelnut, western beaked hazel Betulaceae
Corylus maxima 'Purpurea' purple filbert, hazel Betulaceae
Cosmos bipinnatus cosmos, Mexican aster Asteraceae
Cotinus coggygria smoke bush Anacardiaceae
Cotoneaster acutifolius Peking cotoneaster Rosaceae
Cotoneaster apiculatus cranberry cotoneaster Rosaceae
Cotoneaster dammeri bearberry cotoneaster Rosaceae
Cotoneaster franchetii Franchet cotoneaster, gray cotoneaster Rosaceae
Cotoneaster horizontalis rockspray cotoneaster Rosaceae
Cotoneaster lacteus Parney cotoneaster Rosaceae
Cotoneaster microphyllus littleleaf cotoneaster, small-leaf cotoneaster Rosaceae
Cotoneaster salicifolius var. floccosus willowleaf cotoneaster Rosaceae
Crassula ovata jade plant Crassulaceae
Crataegus douglasii black hawthorn Rosaceae
Crataegus laevigata English hawthorn Rosaceae
Crataegus monogyna common hawthorn Rosaceae
Crataegus phaenopyrum Washington hawthorn Rosaceae
Crataegus x lavallei Lavalle hawthorn Rosaceae
Crataegus x mordenensis Morden hawthorn Rosaceae
Crocosmia 'Lucifer' Lucifer montbretia Iridaceae
Crocosmia x crocosmiiflora montbretia Iridaceae
Crocus chrysanthus snow crocus, golden crocus Iridaceae
Crocus speciosus fall flowering crocus, Bieberstein's crocus Iridaceae
Crocus vernus (incl. hybrid cvs.) Dutch crocus, crocus Iridaceae
Crossandra infundibuliformis firecracker flower Acanthaceae
Cryptanthus bivittatus earth star Bromeliaceae
Cryptanthus zonatus 'Zebrinus' zebra plant Bromeliaceae
Cryptomeria japonica Japanese cedar Cupressaceae
Cryptomeria japonica 'Cristata' cockscomb Japanese cedar, crested Japanese cedar Cupressaceae
Cryptomeria japonica 'Elegans' plume Japanese cedar Cupressaceae
Cryptomeria japonica 'Vilmoriniana' globe Japanese cedar Cupressaceae
Ctenanthe oppenheimiana never never plant Marantaceae
Cucumis melo cantaloupe, honeydew, muskmelon Cucurbitaceae
Cucumis sativus long English cucumber, European cucumber Cucurbitaceae
Cucurbita maxima pumpkin, winter squash Cucurbitaceae
Cucurbita pepo summer squash, zucchini Cucurbitaceae
Cunninghamia lanceolata China fir Cupressaceae
Cuphea hyssopifolia (incl. hybrid cvs.) Mexican heather Lythraceae
Cuphea ignea (incl. hybrid cvs.) firecracker plant, cigar flower Lythraceae
Cuphea x purpurea firecracker Lythraceae
Cupressus arizonica Arizona cypress Cupressaceae
Cupressus nootkatensis 'Pendula' ( syn. Chamaecyparis ) weeping Nootka false cypress Cupressaceae
Cupressus nootkatensis ( syn. Chamaecyparis ) Nootka cypress, yellow cedar Cupressaceae
Cupressus x leylandii Leyland cypress Cupressaceae
Curio rowleyanus ( syn. Senecio rowleyanus ) string-of-pearls, string-of-beads Asteraceae
Cycas revoluta Japanese sago palm Cycadaceae
Cyclamen hederifolium hardy cyclamen Primulaceae
Cyclamen persicum (incl. hybrid cvs.) cyclamen Primulaceae
Cyclamen repandum hardy cyclamen, spring sowbread Primulaceae
Cydonia oblonga quince Rosaceae
Cymbidium (hybrids) boat orchid Orchidaceae
Cynara cardunculus cardoon, globe artichoke Asteraceae
Cyperus spp. papyrus, umbrella plant Cyperaceae
Cyrtomium falcatum Japanese holly fern Dryopteridaceae
Cytisus scoparius Scotch broom Fabaceae
Cytisus x praecox Warminster broom Fabaceae
Daboecia cantabrica Irish heath Ericaceae
Dactylis glomerata orchard grass Poaceae
Dahlia x hybrida dahlia Asteraceae
Daphne cneorum rose daphne, garland flower, rock daphne Thymelaeaceae
Daphne laureola spurge laurel Thymelaeaceae
Daphne odora 'Aureomarginata' variegated winter daphne Thymelaeaceae
Darmera peltata umbrella plant Saxifragaceae
Datura inoxia pricklyburr, thorn apple Solanaceae
Daucus carota ssp. sativus carrot Apiaceae
Davallia sp. rabbit's foot fern Davalliaceae
Davidia involucrata dove tree, kleenex tree, handkerchief tree Nyssaceae
Decaisnea insignis dead man's fingers Lardizabalaceae
Delosperma spp. hardy ice plant Aizoaceae
Delphinium (spp. & hybrids) delphinium Ranunculaceae
Delphinium elatum delphinium, perennial larkspur Ranunculaceae
Deschampsia cespitosa tufted hair grass Poaceae
Deutzia gracilis (incl. hybrid cvs.) slender deutzia Hydrangeaceae
Deutzia scabra 'Pride of Rochester' Pride of Rochester deutzia, fuzzy deutzia Hydrangeaceae
Dianthus barbatus (incl. hybrid cvs.) sweet William Caryophyllaceae
Dianthus caryophyllus carnation Caryophyllaceae
Dianthus chinensis (incl. hybrids) dianthus, China pink Caryophyllaceae
Dianthus deltoides maiden pink Caryophyllaceae
Dianthus gratianopolitanus cheddar pink Caryophyllaceae
Dianthus plumarius cottage pink Caryophyllaceae
Diascia x hybrida diascia, twinspur Scrophulariaceae
Dicentra (hybrid cvs.) bleeding heart Papaveraceae
Dicentra eximia fringed bleeding heart Papaveraceae
Dicentra formosa Pacific bleeding heart Papaveraceae
Dicksonia antarcticum Tasmanian tree fern Dicksoniaceae
Dieffenbachia seguine dumb cane Araceae
Diervilla sessilifolia 'Butterfly' dwarf bush honeysuckle Caprifoliaceae
Digitalis purpurea foxglove Plantaginaceae
Digitaria ischaemum smooth crabgrass Poaceae
Diphylleia cymosa umbrella leaf Berberidaceae
Disanthus cercidifolius red bud hazel Hamamelidaceae
Disocactus ackermannii (& hybrids) orchid cactus, strap cactus Cactaceae
Doronicum spp. leopard's bane Asteraceae
Dracaena braunii ribbon plant, lucky bamboo Asparagaceae
Dracaena fragrans corn plant, cornstalk dracaena, striped dracaena Asparagaceae
Dracaena marginata dragon tree, red margined dracaena Asparagaceae
Dracaena reflexa pleomele Asparagaceae
Dracaena surculosa gold-dust dracaena Asparagaceae
Dryopteris cycadina shaggy shield fern Dryopteridaceae
Dryopteris dilatata 'Jimmy Dyce' Jimmy's upright broad buckler fern Dryopteridaceae
Dryopteris erythrosora copper shield fern, autumn fern Dryopteridaceae
Dryopteris expansa northwest wood fern, Buckler fern Dryopteridaceae
Dryopteris filix-mas 'Crispa Cristata' crested male fern Dryopteridaceae
Dypsis lutescens Areca palm Arecaceae
Echeveria (sp. & hybrids) hens and chicks Crassulaceae
Echinacea purpurea coneflower, echinacea, purple coneflower Asteraceae
Echinacea purpurea cvs. (incl. hybrids) coneflower Asteraceae
Echinocactus grusonii golden barrel cactus Cactaceae
Echinochloa crus-galli barnyard grass Poaceae
Echinops bannaticus globe thistle Asteraceae
Echium vulgare blueweed, viper's bugloss Boraginaceae
Eichhornia crassipes water hyacinth, water orchid Pontederiaceae
Elaeagnus angustifolia Russian olive Elaeagnaceae
Elaeagnus commutata silverberry , wolf willow Elaeagnaceae
Elaeagnus pungens thorny elaeagnus, silverthorn Elaeagnaceae
Elaeagnus x ebbingei elaeagnus, Ebbinge's silverberry Elaeagnaceae
Eleutherococcus sieboldianus five-fingered aralia, five-leaf aralia Araliaceae
Elymus repens ssp. repens ( syn. Agropyron repens ) quackgrass, couchgrass Poaceae
Empetrum nigrum crowberry, crawberry Ericaceae
Enkianthus campanulatus redvein enkianthus Ericaceae
Epilobium ciliatum ( syn. E. glandulosum ) common willowherb, fringed willowherb Onagraceae
Epimedium 'Amber Queen' Amber Queen barrenwort Berberidaceae
Epimedium (hybrid cvs.) hybrid barrenwort Berberidaceae
Epimedium x cantabrigiense barrenwort Berberidaceae
Epimedium x perralchicum yellow epimedium, barrenwort, hybrid bishop's hat Berberidaceae
Epimedium x rubrum barrenwort Berberidaceae
Epimedium x youngianum barrenwort Berberidaceae
Epipremnum aureum devil's ivy, golden pothos Araceae
Equisetum arvense common horsetail Equisetaceae
Equisetum hyemale scouring rush, horsetail Equisetaceae
Equisetum spp. horsetail Equisetaceae
Eremurus x isabellinus foxtail lily Asphodelaceae
Erica carnea winter heather Ericaceae
Erica tetralix cross leaved heath Ericaceae
Erica x darleyensis erica, heath Ericaceae
Erigeron glaucus beach aster, seaside daisy Asteraceae
Eryngium alpinum alpine sea holly Apiaceae
Eryngium planum blue sea holly, flat sea holly Apiaceae
Eryngium variifolium marble-leaf sea holly, Moroccan sea holly Apiaceae
Erysimum 'Bowles Mauve' Bowles Mauve wallflower Brassicaceae
Erysimum cheiri English wallflower Brassicaceae
Erythronium (hybrid cvs.) hybrid fawn lily Liliaceae
Erythronium americanum yellow trout lily, adder's tongue Liliaceae
Escallonia x exoniensis 'Frades' pink princess escallonia Escalloniaceae
Eschscholzia californica California poppy Papaveraceae
Eucalyptus sp. eucalyptus Myrtaceae
Euonymus alatus burning bush, winged euonymus, winged burning bush Celastraceae
Euonymus europaeus common spindle tree, European euonymus Celastraceae
Euonymus fortunei wintercreeper, winter creeper Celastraceae
Euonymus japonicus 'Paloma Blanca' Paloma Blanca euonymus Celastraceae
Euonymus japonicus 'Silver King' Silver King euonymus Celastraceae
Eupatorium cannabinum double hemp agrimony, boneset Asteraceae
Euphorbia 'Charam' Redwing spurge Euphorbiaceae
Euphorbia amygdaloides wood spurge, Mrs. Robb's bonnet, purple wood spurge Euphorbiaceae
Euphorbia characias Mediterranean spurge Euphorbiaceae
Euphorbia cyparissias cypress spurge Euphorbiaceae
Euphorbia dulcis sweet spurge Euphorbiaceae
Euphorbia esula green spurge, leafy spurge Euphorbiaceae
Euphorbia griffithii 'Fireglow' Fireglow spurge Euphorbiaceae
Euphorbia hybrid cvs. hybrid spurge Euphorbiaceae
Euphorbia hypericifolia euphorbia, graceful spurge Euphorbiaceae
Euphorbia lacei ( syn. E. trigona ) African milk tree Euphorbiaceae
Euphorbia mammillaris corncob plant Euphorbiaceae
Euphorbia milii (incl. hybrids) crown of thorns Euphorbiaceae
Euphorbia myrsinites myrtle spurge, donkey-tail spurge Euphorbiaceae
Euphorbia polychroma golden spurge, cushion spurge Euphorbiaceae
Euphorbia pulcherrima poinsettia Euphorbiaceae
Eustoma grandiflorum lisianthus, prairie gentian, Texas bluebell Gentianaceae
Eutrochium purpureum Joe Pye weed Asteraceae
Exochorda x 'Blizzard' Snowy Day Blizzard pearlbush Rosaceae
Fagus grandifolia American beech Fagaceae
Fagus sylvatica European beech Fagaceae
Fagus sylvatica 'Aspleniifolia' fern-leaf beech Fagaceae
Fagus sylvatica 'Dawyck Gold' gold columnar beech Fagaceae
Fagus sylvatica 'Dawyck Purple' Dawyck purple beech Fagaceae
Fagus sylvatica 'Purple Fountain' weeping purple beech Fagaceae
Fagus sylvatica 'Purpurea Pendula' weeping copper beech Fagaceae
Fagus sylvatica 'Rohan Obelisk' red obelisk beech Fagaceae
Fagus sylvatica 'Rotundifolia' round leaf beech Fagaceae
Fagus sylvatica Atropurpurea Group copper beech, purple beech Fagaceae
Falkia repens creeping falkia, African morning glory Convolvulaceae
Fallopia baldschuanica silver lace vine Polygonaceae
Fallopia japonica ( syn. Reynoutria ) Japanese knotweed Polygonaceae
Fargesia nitida fountain bamboo Poaceae
Fatsia japonica fatsia Araliaceae
Faucaria tigrina tiger's jaws Aizoaceae
Felicia amelloides blue marguerite, blue daisy Asteraceae
Ferocactus sp. barrel cactus Cactaceae
Festuca arundinacea tall fescue Poaceae
Festuca glauca blue fescue, blue sheep fescue Poaceae
Festuca idahoensis Idaho fescue, blue bunchgrass Poaceae
Festuca longifolia hard fescue, fine fescue Poaceae
Festuca ovina sheep fescue, fine fescue Poaceae
Festuca rubra var. rubra creeping red fescue Poaceae
Festuca valesiaca 'Nefer' Nefer fescue Poaceae
Ficus benghalensis banyan, Audrey fig Moraceae
Ficus benjamina weeping ficus, weeping fig Moraceae
Ficus binnendijkii 'Alii' sabre fig Moraceae
Ficus carica common fig, garden fig Moraceae
Ficus elastica rubber plant, India rubber plant, rubber tree Moraceae
Ficus lyrata fiddle-leaf fig Moraceae
Ficus pumila creeping fig Moraceae
Filipendula purpurea Japanese meadowsweet Rosaceae
Filipendula ulmaria European meadowsweet Rosaceae
Filipendula vulgaris dropwort Rosaceae
Fittonia albivenis Argyroneura Group white nerve plant, mosaic plant Acanthaceae
Foeniculum vulgare fennel Apiaceae
Forsythia x intermedia cvs. showy forsythia Oleaceae
Fothergilla gardenii dwarf fothergilla, witch alder Hamamelidaceae
Fothergilla major fothergilla, witch alder Hamamelidaceae
Fragaria 'Frel' Pink Panda strawberry Rosaceae
Fragaria chiloensis coastal strawberry, wild strawberry Rosaceae
Fragaria x ananassa garden strawberry Rosaceae
Frangula purshiana cascara Rhamnaceae
Fraxinus (hybrid cvs.) hybrid ash Oleaceae
Fraxinus americana American ash, white ash Oleaceae
Fraxinus angustifolia narrow-leafed ash Oleaceae
Fraxinus excelsior common ash, European ash Oleaceae
Fraxinus nigra 'Fallgold' Fallgold black ash, swamp ash Oleaceae
Fraxinus ornus manna ash, flowering ash Oleaceae
Fraxinus pennsylvanica green ash Oleaceae
Fraxinus pennsylvanica cvs. green ash Oleaceae
Freesia x hybrida freesia Iridaceae
Fremontodendron californicum fremontia, California flannel bush Malvaceae
Fritillaria imperialis crown imperial Liliaceae
Fritillaria meleagris Guinea hen flower Liliaceae
Fritillaria michailovskyi fritillary Liliaceae
Fuchsia magellanica 'Riccartonii' Riccartoni hardy fuchsia Onagraceae
Fuchsia magellanica var. macrostema 'Tricolor' hardy fuchsia, lady's eardrops Onagraceae
Fuchsia magellanica var. molinae 'Sharpitor' pink hardy fuchsia Onagraceae
Fuchsia x hybrida hybrid fuchsia Onagraceae
Fumaria spp. fumitory Papaveraceae
Gaillardia cvs. blanket flower Asteraceae
Galanthus nivalis snowdrop Amaryllidaceae
Galium aparine northern bedstraw, cleavers Rubiaceae
Galium odoratum sweet woodruff Rubiaceae
Gardenia jasminoides gardenia Rubiaceae
Garrya elliptica wavyleaf silktassel, coast silk-tassel , silk tasselbush Garryaceae
Gaultheria mucronata pernettya; prickly heath Ericaceae
Gaultheria procumbens wintergreen Ericaceae
Gaultheria shallon salal Ericaceae
Gazania cv. gazania, treasure flower, African daisy Asteraceae
Genista lydia lydia genista Fabaceae
Genista pilosa spreading broom Fabaceae
Geranium cinereum dwarf cranesbill Geraniaceae
Geranium endressii Endres's cranesbill, French cranesbill Geraniaceae
Geranium himalayense (incl. hybrid cvs.) blue hybrid cranesbill, Johnson's Blue geranium Geraniaceae
Geranium macrorrhizum 'Ingwersen's Variety' Ingwersen's Variety bigroot geranium Geraniaceae
Geranium molle dove's foot cranesbill Geraniaceae
Geranium phaeum mourning widow Geraniaceae
Geranium pratense meadow cranesbill Geraniaceae
Geranium psilostemon Armenian cranesbill Geraniaceae
Geranium robertianum Robert geranium, herb Robert Geraniaceae
Geranium sanguineum bloody cranesbill Geraniaceae
Geranium spp. and/ or cvs. geranium, cranesbill Geraniaceae
Geranium x oxonianum pink cranesbill Geraniaceae
Gerbera jamesonii (incl. hybrids) Transvaal daisy Asteraceae
Geum coccineum dwarf orange geum, avens Rosaceae
Geum macrophyllum large-leaved avens Rosaceae
Gibasis geniculata Tahitian bridal veil Commelinaceae
Ginkgo biloba maidenhair tree, ginkgo Ginkgoaceae
Gladiolus cv. gladiolus, gladioli Iridaceae
Glechoma hederacea creeping Charlie, ground ivy Lamiaceae
Gleditsia triacanthos f. inermis thornless honey locust Fabaceae
Glyceria maxima 'Variegata' variegated manna grass Poaceae
Gnaphalium uliginosum marsh cudweed Asteraceae
Goeppertia makoyana ( syn. Calathea ) peacock plant Marantaceae
Goeppertia roseopicta ( syn. Calathea ) calathea Marantaceae
Gunnera manicata gunnera, giant rhubarb Gunneraceae
Guzmania lingulata scarlet star, vase plant Bromeliaceae
Gymnocarpium dryopteris oak fern Cystopteridaceae
Gymnocladus dioica Kentucky coffee tree Fabaceae
Gynura aurantiaca purple passion plant Asteraceae
Gypsophila paniculata baby's breath Caryophyllaceae
Hakonechloa macra golden variegated hakonechloa Poaceae
Halesia carolina Carolina silverbell Styracaceae
Hamamelis mollis Chinese witch hazel Hamamelidaceae
Hamamelis virginiana American witch hazel Hamamelidaceae
Hamamelis x intermedia hybrid witch hazel Hamamelidaceae
Hatiora x graeseri Easter cactus Cactaceae
Haworthiopsis attenuata ( syn. Haworthia ) zebra haworthia Asphodelaceae
Hebe 'Blue Mist' ( syn. Veronica ) Blue Mist hebe Plantaginaceae
Hebe 'Mrs. Winder' ( syn. Veronica ) Mrs. Winder hebe Plantaginaceae
Hebe ochracea ( syn. Veronica ) ochre whipcord hebe Plantaginaceae
Hebe odora ( syn. Veronica ) hebe Plantaginaceae
Hedera colchica 'Sulfur Heart' variegated Persian ivy Araliaceae
Hedera helix English ivy Araliaceae
Helenium autumnale 'Zimbelstern' Zimbelstern sneezeweed Asteraceae
Helianthemum nummularium rock rose Cistaceae
Helianthus annuus cvs. sunflower Asteraceae
Helianthus tuberosus Jerusalem artichoke Asteraceae
Helichrysum italicum curry plant, tall curry Asteraceae
Helichrysum petiolare cvs. licorice plant Asteraceae
Helichrysum thianschanicum silver spike Asteraceae
Heliconia spp. heliconia, lobster claw Heliconiaceae
Helictotrichon sempervirens blue oat grass Poaceae
Heliopsis helianthoides false sunflower, oxeye sunflower Asteraceae
Heliotropium arborescens cvs. heliotrope, cherry pie Boraginaceae
Helleborus foetidus stinking hellebore Ranunculaceae
Helleborus x hybridus hybrid Lenten rose Ranunculaceae
Hemerocallis cvs. daylily Asphodelaceae
Heptapleurum actinophyllum ( syn. Schefflera actinophylla ) umbrella plant, Australian umbrella tree Araliaceae
Heracleum lanatum cow parsnip Apiaceae
Heracleum mantegazzianum giant hogweed Apiaceae
Herniaria glabra rupturewort, green carpet Caryophyllaceae
Hesperantha coccinea crimson flag, river lily Iridaceae
Heuchera americana cvs. fancy-leaved coral bells Saxifragaceae
Heuchera cvs. coral bells, alumroot Saxifragaceae
Heuchera micrantha cvs. fancy-leafed coral bells, small-flowered alumroot, crevice alumroot Saxifragaceae
Heuchera micrantha var. diversifolia 'Palace Purple' Palace Purple alumroot Saxifragaceae
Heuchera sanguinea coral bells, red coral bells Saxifragaceae
Heuchera x brizoides hybrid coral bells, fancy-leaved coral bells Saxifragaceae
Heuchera x villosa coral bells Saxifragaceae
Hibiscus acetosella cranberry hibiscus, African rosemallow, false roselle Malvaceae
Hibiscus moscheutos (incl. hybrid cvs.) hardy hibiscus, swamp rose mallow Malvaceae
Hibiscus rosa-sinensis Chinese hibiscus Malvaceae
Hibiscus syriacus hardy hibiscus, rose of Sharon Malvaceae
Hieracium aurantiacum ( syn. Pilosella aurantiaca ) orange hawkweed Asteraceae
Hippeastrum cvs. amaryllis Amaryllidaceae
Holcus lanatus velvet grass Poaceae
Holodiscus discolor oceanspray Rosaceae
Hordeum vulgare barley Poaceae
Hosta 'Halcyon' Halcyon hosta Asparagaceae
Hosta 'June' June hosta Asparagaceae
Hosta cvs. hosta, plantain lily Asparagaceae
Hosta sieboldiana blue hosta Asparagaceae
Hottonia palustris water violet Primulaceae
Houstonia serpyllifolia thyme-leaved bluets Rubiaceae
Houttuynia cordata 'Chameleon' tricolor houttuynia, chameleon plant Saururaceae
Hoya carnosa wax plant Apocynaceae
Humulus lupulus common hop Cannabaceae
Hyacinthoides non-scripta English bluebell Asparagaceae
Hyacinthus orientalis (incl. hybrid cvs.) hyacinth Asparagaceae
Hydrangea arborescens hills of snow, smooth hydrangea Hydrangeaceae
Hydrangea aspera Chinese hydrangea, rough-leaved hydrangea Hydrangeaceae
Hydrangea macrophylla bigleaf hydrangea Hydrangeaceae
Hydrangea paniculata pee gee hydrangea Hydrangeaceae
Hydrangea petiolaris climbing hydrangea Hydrangeaceae
Hydrangea quercifolia oakleaf hydrangea Hydrangeaceae
Hylotelephium spectabile 'Herbstfreude' Autumn Joy sedum, hybrid stonecrop Crassulaceae
Hylotelephium telephium (incl. hybrid cvs.) ( syn. Sedum ) autumn stonecrop Crassulaceae
Hymenocallis (incl. hybrid cvs.) spider lily, Peruvian daffodil Amaryllidaceae
Hypericum calycinum St. John's wort Hypericaceae
Hypericum perforatum St. John's wort Hypericaceae
Hypericum x hidcoteense 'Hidcote' Hidcote St. John's wort Hypericaceae
Hypochaeris radicata false dandelion Asteraceae
Hypoestes phyllostachya polka-dot plant Acanthaceae
Iberis sempervirens evergreen candytuft, rock candytuft, candytuft Brassicaceae
Ilex aquifolium English holly Aquifoliaceae
Ilex crenata Japanese holly Aquifoliaceae
Ilex glabra cvs. inkberry Aquifoliaceae
Ilex x altaclerensis Highclere holly Aquifoliaceae
Ilex x meserveae blue holly Aquifoliaceae
Impatiens capensis jewelweed , orange balsam Balsaminaceae
Impatiens glandulifera Himalayan balsam Balsaminaceae
Impatiens hawkeri New Guinea impatiens Balsaminaceae
Impatiens walleriana impatiens Balsaminaceae
Impatiens x hybrida hybrid impatiens Balsaminaceae
Imperata cylindrica 'Red Baron' Japanese blood grass Poaceae
Inula helenium elecampane Asteraceae
Ipomoea batatas cvs. sweet potato vine Convolvulaceae
Iresine herbstii bloodleaf Amaranthaceae
Iris bucharica Juno iris Iridaceae
Iris ensata Japanese water iris Iridaceae
Iris pallida 'Variegata' variegated sweet iris Iridaceae
Iris pseudacorus yellow flag iris Iridaceae
Iris reticulata dwarf iris Iridaceae
Iris sibirica Siberian iris Iridaceae
Iris x germanica German iris, tall bearded iris Iridaceae
Iris x hollandica Dutch iris Iridaceae
Isolepis cernua fiber optic grass Cyperaceae
Jacobaea maritima dusty miller Asteraceae
Jasminum nudiflorum winter jasmine Oleaceae
Jasminum polyanthum jasmine Oleaceae
Juglans nigra black walnut Juglandaceae
Juncus effusus common rush, bog rush Juncaceae
Juncus effusus 'Spiralis' corkscrew rush Juncaceae
Juncus ensifolius dagger-leaved rush, swordleaf rush Juncaceae
Juniperus chinensis Chinese juniper Cupressaceae
Juniperus communis common juniper Cupressaceae
Juniperus horizontalis cvs. creeping juniper, horizontal juniper Cupressaceae
Juniperus procumbens Japanese garden juniper, green mound weeping juniper Cupressaceae
Juniperus sabina tamarix juniper, savin juniper Cupressaceae
Juniperus scopulorum cvs. Rocky Mountain juniper, Wichita Blue juniper, Tolleson's Blue Weeping juniper Cupressaceae
Juniperus squamata squamata juniper, Blue Star juniper Cupressaceae
Juniperus virginiana eastern red cedar Cupressaceae
Justicia brandegeana shrimp plant Acanthaceae
Kalanchoe blossfeldiana kalanchoe Crassulaceae
Kalanchoe tomentosa panda plant Crassulaceae
Kalmia latifolia mountain laurel Ericaceae
Kalmia microphylla western bog laurel Ericaceae
Kerria japonica Japanese kerria Rosaceae
Kirengeshoma palmata yellow waxbells Hydrangeaceae
Knautia arvensis field scabious Caprifoliaceae
Knautia macedonica crimson scabious Caprifoliaceae
Kniphofia uvaria (incl. hybrid cvs.) red hot poker Asphodelaceae
Koeleria glauca blue hair grass Poaceae
Koelreuteria paniculata golden rain tree Sapindaceae
Kolkwitzia amabilis beautybush Caprifoliaceae
Laburnum x watereri golden chain tree Fabaceae
Lactuca muralis wall lettuce Asteraceae
Lactuca sativa lettuce Asteraceae
Lagenaria spp. gourd Cucurbitaceae
Lagerstroemia fauriei (incl. hybrid cvs.) Japanese crape myrtle Lythraceae
Lamium galeobdolon 'Variegatum' lamium, variegated yellow archangel Lamiaceae
Lamium maculatum spotted deadnettle, dead nettle Lamiaceae
Lamium purpureum purple deadnettle Lamiaceae
Lampranthus spp. trailing ice plant Aizoaceae
Lamprocapnos spectabilis ( syn. Dicentra ) bleeding heart Papaveraceae
Lantana camara (incl. hybrid cvs.) lantana Verbenaceae
Larix decidua European larch Pinaceae
Larix kaempferi Japanese larch Pinaceae
Larix laricina tamarack, eastern larch, American larch Pinaceae
Larix occidentalis western larch (seedling) Pinaceae
Lathyrus latifolius perennial pea, everlasting pea Fabaceae
Lathyrus odoratus sweet pea Fabaceae
Laurus nobilis bay laurel Lauraceae
Lavandula angustifolia English lavender Lamiaceae
Lavandula stoechas French lavender, Spanish lavender Lamiaceae
Lemna minor common duckweed Araceae
Leptinella squalida brass buttons Asteraceae
Lespedeza thunbergii purple bush clover Fabaceae
Leucanthemum vulgare oxeye daisy Asteraceae
Leucanthemum x superbum Shasta daisy Asteraceae
Leucojum aestivum summer snowflake Amaryllidaceae
Leucothoe axillaris coast leucothoe Ericaceae
Leucothoe fontanesiana 'Rainbow' Rainbow leucothoe Ericaceae
Levisticum officinale lovage, garden lovage Apiaceae
Lewisia cotyledon (incl. hybrid cvs.) lewisia Montiaceae
Leycesteria formosa Himalayan honeysuckle Caprifoliaceae
Liatris spicata blazing star, liatris Asteraceae
Ligularia dentata bigleaf goldenray Asteraceae
Ligularia stenocephala ligularia Asteraceae
Ligustrum obtusifolium ( syn. L. amurense ) Amur privet, border privet Oleaceae
Ligustrum vulgare common privet Oleaceae
Lilium cvs. (Asiatic) Asiatic hybrid lily Liliaceae
Lilium cvs. (Oriental) Oriental hybrid lily Liliaceae
Lilium lancifolium tiger lily Liliaceae
Lilium longiflorum Easter lily Liliaceae
Limonium sinuatum annual statice Plumbaginaceae
Linaria vulgaris toadflax Scrophulariaceae
Linnaea borealis twin flower Caprifoliaceae
Linum spp. blue flax Linaceae
Liquidambar styraciflua American sweetgum Altingiaceae
Liriodendron chinense Chinese tulip tree Magnoliaceae
Liriodendron tulipifera tulip tree, yellow poplar Magnoliaceae
Liriodendron tulipifera 'Aureomarginatum' variegated tulip tree Magnoliaceae
Liriope muscari big blue lilyturf, monkey grass Asparagaceae
Lithodora diffusa blue lithospermum Boraginaceae
Lobelia cardinalis cardinal flower Campanulaceae
Lobelia erinus lobelia Campanulaceae
Lobelia pedunculata matted pratia, trailing pratia Campanulaceae
Lobelia x speciosa lobelia Campanulaceae
Lobularia maritima sweet alyssum, alyssum Brassicaceae
Lolium multiflorum annual ryegrass, Italian ryegrass Poaceae
Lolium perenne perennial ryegrass Poaceae
Lonicera henryi Henry honeysuckle Caprifoliaceae
Lonicera involucrata black twinberry, bearberry honeysuckle Caprifoliaceae
Lonicera japonica Japanese honeysuckle Caprifoliaceae
Lonicera nitida boxleaf honeysuckle Caprifoliaceae
Lonicera nitida 'Red Tips' boxleaf honeysuckle Caprifoliaceae
Lonicera pileata privet honeysuckle Caprifoliaceae
Lonicera x brownii 'Dropmore Scarlet' scarlet trumpet honeysuckle Caprifoliaceae
Lonicera xylosteum fly honeysuckle, shrub honeysuckle Caprifoliaceae
Lophospermum erubescens creeping gloxinia Plantaginaceae
Lophospermum purpusii asarina Plantaginaceae
Lotus berthelotii parrot's beak, coral gem, pelican's beak, lotus vine Fabaceae
Lunaria annua silver dollar plant, money plant Brassicaceae
Lupinus polyphyllus (incl. hybrid cvs.) lupine Fabaceae
Luzula nivea snowy woodrush Juncaceae
Luzula sylvatica greater woodrush Juncaceae
Lycianthes rantonnetii blue potato bush Solanaceae
Lysichiton americanus yellow skunk cabbage, swamp lantern Araceae
Lysimachia clethroides gooseneck lysimachia Primulaceae
Lysimachia latifolia starflower Primulaceae
Lysimachia monelli ( syn. Anagallis ) blue pimpernel Primulaceae
Lysimachia nummularia creeping Jenny, moneywort Primulaceae
Lysimachia punctata circle flower, yellow loosestrife Primulaceae
Lythrum salicaria purple loosestrife Lythraceae
Macleaya cordata plume poppy Papaveraceae
Magnolia 'Caerhays Belle' Caerhays Belle magnolia Magnoliaceae
Magnolia 'Galaxy' Galaxy magnolia Magnoliaceae
Magnolia 'Susan' Susan's magnolia Magnoliaceae
Magnolia denudata Yulan magnolia, lily tree Magnoliaceae
Magnolia grandiflora southern magnolia Magnoliaceae
Magnolia kobus northern Japanese magnolia Magnoliaceae
Magnolia officinalis Chinese magnolia, medical magnolia Magnoliaceae
Magnolia sieboldii Oyama magnolia Magnoliaceae
Magnolia stellata star magnolia Magnoliaceae
Magnolia x loebneri Loebner magnolia Magnoliaceae
Magnolia x soulangeana saucer magnolia Magnoliaceae
Mahonia aquifolium ( syn. Berberis ) Oregon grape Berberidaceae
Mahonia nervosa ( syn. Berberis ) longleaf mahonia, dull Oregon grape Berberidaceae
Mahonia repens ( syn. Berberis ) creeping mahonia, creeping barberry Berberidaceae
Mahonia x media 'Charity' charity mahonia Berberidaceae
Maianthemum dilatatum false lily-of-the valley Asparagaceae
Maianthemum racemosum false Solomon's seal Asparagaceae
Maianthemum stellatum star-flowered false Solomon's seal Asparagaceae
Malus 'JFS-KW5' Royal Raindrops crabapple Rosaceae
Malus floribunda Japanese flowering crabapple Rosaceae
Malus fusca Pacific crabapple Rosaceae
Malus sylvestris European crabapple Rosaceae
Malus x domestica apple Rosaceae
Malva neglecta common mallow Malvaceae
Mandevilla splendens shining mandevilla, pink mandevilla Apocynaceae
Manettia luteorubra Brazilian firecracker, candy corn vine Rubiaceae
Maranta leuconeura prayer plant, rabbit tracks Marantaceae
Maranta leuconeura 'Erythroneura' red-veined prayer plant, herringbone plant Marantaceae
Maranta leuconeura var. kerchoviana prayer plant, rabbit tracks Marantaceae
Marchantia polymorpha thalloid liverwort, lung liverwort Marchantiaceae
Marsdenia floribunda ( syn. Stephanotis ) Madagascar jasmine Apocynaceae
Matricaria discoidea pineapple weed Asteraceae
Matteuccia struthiopteris ostrich fern Onocleaceae
Matthiola incana stock Brassicaceae
Meconopsis betonicifolia Himalayan blue poppy Papaveraceae
Medicago lupulina black medic Fabaceae
Melaleuca citrina crimson bottlebrush Myrtaceae
Meliosma pinnata var. oldhamii meliosma Sabiaceae
Melissa officinalis lemon balm Lamiaceae
Melliodendron xylocarpum Chinese parasol Styracaceae
Melothria scabra cucamelon Cucurbitaceae
Mentha cervina water spearmint, Hart's pennyroyal Lamiaceae
Mentha spicata spearmint Lamiaceae
Mentha suaveolens apple mint Lamiaceae
Mentha x piperita peppermint Lamiaceae
Mespilus germanica medlar Rosaceae
Metasequoia glyptostroboides dawn redwood Cupressaceae
Microbiota decussata Siberian cypress Cupressaceae
Mikania ternata plush vine Asteraceae
Mimulus aurantiacus monkey flower Phrymaceae
Miscanthus sinensis maiden grass Poaceae
Miscanthus sinensis 'Cosmopolitan' variegated maiden grass Poaceae
Miscanthus sinensis 'Goliath' Goliath maiden grass Poaceae
Miscanthus sinensis 'Gracillimus' Gracillimus maiden grass Poaceae
Miscanthus sinensis 'Little Kitten' Little Kitten maiden grass Poaceae
Miscanthus sinensis 'Morning Light' variegated maiden grass Poaceae
Miscanthus sinensis 'Purpurascens' orange flame grass Poaceae
Miscanthus sinensis 'Silberfeder' silver feather maiden grass Poaceae
Miscanthus sinensis 'Strictus' porcupine grass Poaceae
Miscanthus sinensis 'Yaku Jima' dwarf maiden grass Poaceae
Miscanthus x giganteus giant silver grass Poaceae
Molinia caerulea ssp. arundinacea 'Skyracer' tall moor grass Poaceae
Molinia caerulea ssp. caerulea 'Variegata' variegated moor grass Poaceae
Monarda didyma cvs. bee balm Lamiaceae
Monopsis unidentata monopsis Campanulaceae
Monstera deliciosa Swiss cheese plant or hurricane plant Araceae
Morus alba 'Pendula' weeping mulberry Moraceae
Muehlenbeckia complexa creeping wire vine, maidenhair vine, mattress vine Polygonaceae
Mukdenia rossii mukdenia Saxifragaceae
Musa sp. banana Musaceae
Muscari armeniacum grape hyacinth Asparagaceae
Myosotis sylvatica garden forget-me-not Boraginaceae
Myrica californica California wax myrtle, Pacific wax myrtle Myricaceae
Myrica gale bog myrtle, sweet gale Myricaceae
Nandina domestica heavenly bamboo Berberidaceae
Narcissus 'King Alfred' King Alfred daffodil Amaryllidaceae
Narcissus cvs. daffodil Amaryllidaceae
Nassella tenuissima ( syn. Stipa ) narrow feather grass, Mexican feather grass, angel hair grass Poaceae
Nasturtium officinale watercress Brassicaceae
Nematanthus gregarius goldfish plant Gesneriaceae
Nemesia (incl. hybrids) nemesia Plantaginaceae
Neoregelia carolinae blushing bromeliad Bromeliaceae
Nepeta x faassenii cvs. catmint Lamiaceae
Nephrolepis exaltata Boston fern Nephrolepidaceae
Nerium oleander oleander, rose bay Apocynaceae
Nicotiana alata flowering tobacco, jasmine tobacco Solanaceae
Nicotiana sylvestris flowering tobacco Solanaceae
Nicotiana x sanderae flowering tobacco Solanaceae
Nothofagus antarctica southern beech Nothofagaceae
Nuphar polysepala yellow pond lily Nymphaeaceae
Nymphaea (incl. hybrids) water lily Nymphaeaceae
Nyssa sinensis Chinese tupelo Nyssaceae
Nyssa sylvatica black gum Nyssaceae
Ocimum basilicum sweet basil Lamiaceae
Oemleria cerasiformis Oso berry, Indian plum Rosaceae
Oenothera biennis evening primrose Onagraceae
Oenothera fremontii evening primrose Onagraceae
Oenothera lindheimeri wand flower, bee blossom Onagraceae
Olea europaea hardy olive Oleaceae
Omphalodes cappadocica Cappadocian navelwort, blue-eyed Mary Boraginaceae
Onoclea sensibilis sensitive fern Onocleaceae
Ophiopogon planiscapus 'Nigrescens' black mondo grass Asparagaceae
Oplopanax horridus devil's club Araliaceae
Opuntia microdasys bunny ears cactus Cactaceae
Origanum laevigatum 'Herrenhausen' ornamental oregano Lamiaceae
Origanum majorana sweet marjoram Lamiaceae
Origanum rotundifolium (incl. hybrids) hop-like oregano, round-leaved oregano Lamiaceae
Origanum vulgare oregano Lamiaceae
Ornithogalum spp. star-of-Bethlehem Asparagaceae
Orostachys iwarenge Chinese dunce cap Crassulaceae
Osmanthus decorus lance leaf osmanthus Oleaceae
Osmanthus delavayi tea olive Oleaceae
Osmanthus heterophyllus variegated holly osmanthus, false holly Oleaceae
Osmanthus x burkwoodii Burkwood osmanthus Oleaceae
Osmunda cinnamomea cinnamon fern Osmundaceae
Osmunda regalis royal fern Osmundaceae
Osteospermum cvs. osteospermum, cape daisy Asteraceae
Ostrya virginiana American hophornbeam, ironwood Betulaceae
Oxalis adenophylla silver shamrock Oxalidaceae
Oxalis corniculata creeping oxalis Oxalidaceae
Oxalis oregana redwood sorrel Oxalidaceae
Oxalis triangularis false shamrock Oxalidaceae
Oxydendrum arboreum sorrel tree, sourwood Ericaceae
Pachira aquatica money tree Malvaceae
Pachysandra terminalis Japanese spurge Buxaceae
Pachystachys lutea golden shrimp plant, lollipop plant Acanthaceae
Paeonia lactiflora (incl. hybrid cvs.) garden peony, Chinese peony Paeoniaceae
Paeonia ludlowii (incl. hybrid cvs.) Tibetan tree peony Paeoniaceae
Paeonia suffruticosa tree peony Paeoniaceae
Panicum virgatum switch grass Poaceae
Papaver nudicaule Icelandic poppy, arctic poppy Papaveraceae
Papaver orientale Oriental poppy Papaveraceae
Parrotia persica Persian parrotia, Persian ironwood Hamamelidaceae
Parthenocissus henryana Henryana parthenocissus, Chinese Virginia creeper Vitaceae
Parthenocissus quinquefolia Virginia creeper Vitaceae
Parthenocissus tricuspidata Boston ivy Vitaceae
Passiflora (incl. hybrid cvs.) passion flower, passion vine Passifloraceae
Passiflora caerulea blue passion flower, passion vine Passifloraceae
Paulownia tomentosa princess tree, empress tree Paulowniaceae
Paxistima myrsinites Oregon boxwood, false box Celastraceae
Pelargonium graveolens rose geranium, citronella geranium Geraniaceae
Pelargonium peltatum ivy-leaf geranium Geraniaceae
Pelargonium spp. geranium Geraniaceae
Pelargonium x domesticum pelargonium, regal geranium Geraniaceae
Pelargonium x hortorum zonal geranium, bedding geranium, hybrid geranium Geraniaceae
Pellaea rotundifolia button fern Pteridaceae
Peltandra virginica arrow arum Araceae
Pennisetum alopecuroides fountain grass Poaceae
Pennisetum glaucum 'Purple Majesty' purple ornamental millet Poaceae
Pennisetum massaicum 'Red Bunny Tails' Red Bunny Tails Poaceae
Pennisetum orientale oriental fountain grass Poaceae
Pennisetum setaceum fountain grass Poaceae
Penstemon barbatus (incl. hybrid cvs.) beard tongue Plantaginaceae
Penstemon cvs. beard tongue Plantaginaceae
Penstemon digitalis smooth beard tongue Plantaginaceae
Peperomia argyreia watermelon peperomia Piperaceae
Peperomia caperata emerald ripple peperomia Piperaceae
Peperomia griseoargentea silver-leaf peperomia, platinum pepper Piperaceae
Peperomia magnoliifolia spoon leaf peperomia Piperaceae
Peperomia obtusifolia baby rubber plant, blunt-leaved peperomia Piperaceae
Peperomia quadrangularis beetle peperomia, radiator plant Piperaceae
Pericallis x hybrida cineraria , Senetti daisy Asteraceae
Perovskia atriplicifolia ( syn. Salvia yangii ) Russian sage Lamiaceae
Persicaria affinis ( syn. Bistorta affinis ) dwarf fleeceflower , Himalayan knotweed Polygonaceae
Persicaria amplexicaulis mountain fleeceflower Polygonaceae
Persicaria bistorta European bistort, snakeweed Polygonaceae
Persicaria campanulata lesser knotweed Polygonaceae
Persicaria maculosa ( syn. Polygonum persicaria ) smartweed, lady's thumb Polygonaceae
Persicaria microcephala 'Red Dragon' Red Dragon knotweed Polygonaceae
Persicaria virginiana 'Painter's Palette' Painter's Palette fleeceflower Polygonaceae
Petasites japonicus giant butterbur Asteraceae
Petroselinum crispum parsley Apiaceae
Petunia x hybrida petunia, Supertunia mini Solanaceae
Phacelia tanacetifolia fiddleneck, lacy phacelia Boraginaceae
Phalaenopsis cvs. moth orchid Orchidaceae
Phalaris arundinacea reed canary grass, ribbon grass Poaceae
Phaseolus coccineus scarlet runner bean Fabaceae
Phaseolus vulgaris common bean, black bean, kidney bean, pinto bean, French bean Fabaceae
Phedimus kamtschaticus ( syn. Sedum kamtschaticum ) orange stonecrop, Russian stonecrop Crassulaceae
Phegopteris decursive-pinnata Japanese beech fern Thelypteridaceae
Philadelphus coronarius mock orange Hydrangeaceae
Philadelphus lewisii Lewis mock orange Hydrangeaceae
Philadelphus x virginalis virginal mock orange Hydrangeaceae
Philodendron hederaceum heart-leaf philodendron Araceae
Philodendron x hybrida hybrid philodendron Araceae
Phlomis russeliana sticky Jerusalem sage Lamiaceae
Phlox drummondii annual phlox Polemoniaceae
Phlox paniculata summer phlox, border phlox, common phlox Polemoniaceae
Phlox subulata creeping phlox, moss phlox Polemoniaceae
Phoenix roebelenii Pygmy date palm Arecaceae
Phormium tenax New Zealand flax Asphodelaceae
Photinia x fraseri photinia Rosaceae
Phygelius x rectus cape fuchsia Scrophulariaceae
Phyllostachys aurea gold stem bamboo, golden bamboo Poaceae
Phyllostachys nigra blackstem bamboo Poaceae
Physalis alkekengi Chinese lantern Solanaceae
Physalis philadelphica tomatillo , Mexican husk tomato Solanaceae
Physocarpus capitatus Pacific ninebark Rosaceae
Physocarpus opulifolius common ninebark Rosaceae
Physostegia virginiana obedient plant, false dragonhead Lamiaceae
Picea abies Norway spruce Pinaceae
Picea abies 'Acrocona' Acrocona Norway spruce Pinaceae
Picea abies 'Nidiformis' nest spruce Pinaceae
Picea abies 'Pendula' weeping Norway spruce Pinaceae
Picea abies 'Reflexa' weeping Norway spruce, cat tail spruce Pinaceae
Picea glauca white spruce Pinaceae
Picea glauca 'Conica' dwarf Alberta spruce Pinaceae
Picea mariana black spruce Pinaceae
Picea omorika Serbian spruce Pinaceae
Picea orientalis oriental spruce Pinaceae
Picea pungens 'Glauca Globosa' blue globe Colorado spruce Pinaceae
Picea pungens f. glauca Colorado blue spruce, Colorado spruce Pinaceae
Picea sitchensis Sitka spruce Pinaceae
Pieris japonica lily-of-the-valley shrub, Japanese pieris Ericaceae
Pilea cadierei aluminum plant Urticaceae
Pilea depressa artillery plant, giant baby's tears Urticaceae
Pilea involucrata ( syn. Pilea mollis ) friendship plant Urticaceae
Pilea nummulariifolia creeping Charlie Urticaceae
Pinus aristata bristlecone pine Pinaceae
Pinus cembra 'Glauca' blue Swiss stone pine Pinaceae
Pinus contorta var. contorta shore pine Pinaceae
Pinus contorta var. latifolia interior lodgepole pine (seedling) Pinaceae
Pinus densiflora Japanese red pine Pinaceae
Pinus flexilis 'Vanderwolf's Pyramid' limber pine, Vanderwolf's pyramid pine Pinaceae
Pinus heldreichii Bosnian pine Pinaceae
Pinus koraiensis Korean pine Pinaceae
Pinus monticola western white pine (seedling) Pinaceae
Pinus mugo mugo pine, Swiss mountain pine Pinaceae
Pinus nigra Austrian pine, black pine Pinaceae
Pinus parviflora Japanese white pine Pinaceae
Pinus ponderosa Ponderosa pine, yellow pine Pinaceae
Pinus strobiformis southwestern white pine, Mexican white pine (seedling) Pinaceae
Pinus strobus eastern white pine Pinaceae
Pinus strobus 'Radiata' dwarf eastern white pine Pinaceae
Pinus sylvestris Scots pine Pinaceae
Pinus sylvestris cvs. Scots pine (cultivars) Pinaceae
Pinus thunbergii Japanese black pine Pinaceae
Pinus wallichiana Himalayan pine, Butan pine, blue pine Pinaceae
Pistia stratiotes water lettuce Araceae
Pisum sativum garden pea Fabaceae
Plantago lanceolata narrow-leaved plantain Plantaginaceae
Plantago major broad-leaved plantain Plantaginaceae
Platanus x acerifolia ( syn. P. x hispanica ) London plane Platanaceae
Platanus orientalis oriental plane tree, oriental sycamore Platanaceae
Platycerium bifurcatum staghorn fern Polypodiaceae
Platycladus orientalis 'Aurea Nana' dwarf golden cedar, oriental arborvitae Cupressaceae
Platycodon grandiflorus balloon flower Campanulaceae
Plectranthus scutellarioides hybrids & cvs. ( syn. Solenostemon ) coleus Lamiaceae
Plectranthus verticillatus Swedish ivy Lamiaceae
Plerandra elegantissima ( syn. Schefflera ) false aralia Araliaceae
Plumbago auriculata blue plumbago, cape leadwort Plumbaginaceae
Poa annua annual bluegrass Poaceae
Poa annua var. reptans creeping bluegrass Poaceae
Poa compressa Canada bluegrass Poaceae
Poa pratensis Kentucky bluegrass Poaceae
Poa supina supina bluegrass Poaceae
Poa trivialis rough bluegrass, rough-stalked meadow grass Poaceae
Podocarpus lawrencei ( syn. P. alpinus ) Tasmanian podocarp Podocarpaceae
Podocarpus macrophyllus Buddhist pine, Japanese yew Podocarpaceae
Podocarpus nivalis alpine totara, mountain totara Podocarpaceae
Polemonium caeruleum Jacob's ladder Polemoniaceae
Polianthes tuberosa tuberose Asparagaceae
Polygonatum biflorum Solomon's seal Asparagaceae
Polygonum aviculare prostrate knotweed Polygonaceae
Polypodium glycyrrhiza licorice fern Polypodiaceae
Polyscias balfouriana Balfour aralia Araliaceae
Polyscias fruticosa Ming aralia Araliaceae
Polystichum braunii Braun's holly fern Dryopteridaceae
Polystichum luctuosum ( syn. P. tsus-simense ) Korean rock fern Dryopteridaceae
Polystichum munitum western sword fern Dryopteridaceae
Polystichum polyblepharum Japanese tassel fern Dryopteridaceae
Polystichum setiferum hedge fern Dryopteridaceae
Pontederia cordata pickerel weed Pontederiaceae
Populus alba white poplar, silver poplar Salicaceae
Populus deltoides plains cottonwood, necklace poplar Salicaceae
Populus nigra 'Italica' Lombardy poplar Salicaceae
Populus tremula 'Erecta' columnar European aspen, columnar Swedish poplar Salicaceae
Populus tremuloides trembling aspen , white poplar Salicaceae
Populus trichocarpa black cottonwood, western balsam-poplar Salicaceae
Portulaca grandiflora portulaca Portulacaceae
Portulaca oleracea purslane Portulacaceae
Potentilla fruticosa ( syn. Dasiphora fruticosa ) potentilla, cinquefoil Rosaceae
Potentilla nepalensis Asian cinquefoil, strawberry cinquefoil Rosaceae
Primula auricula mountain cowslip Primulaceae
Primula denticulata drumstick primrose Primulaceae
Primula malacoides fairy primrose Primulaceae
Primula pauciflora (syn. Dodecatheon pulchellum ) shooting star Primulaceae
Primula spp. primrose Primulaceae
Primula vulgaris (incl. hybrid cvs.) primula, primrose Primulaceae
Prunella vulgaris self-heal Lamiaceae
Prunus 'Kanzan' ( syn. P. 'Kwanzan' ) flowering cherry, Kwanzan cherry, Kanzan cherry Rosaceae
Prunus 'Shirotae' Mount Fuji cherry Rosaceae
Prunus (hybrid cvs.) ornamental cherry tree Rosaceae
Prunus americana American plum Rosaceae
Prunus avium sweet cherry, bird cherry Rosaceae
Prunus cerasifera 'Pissardii' Pissard plum Rosaceae
Prunus laurocerasus English laurel, cherry laurel Rosaceae
Prunus laurocerasus 'Otto Luyken' Otto Luyken laurel Rosaceae
Prunus laurocerasus 'Zabeliana' Zabel laurel Rosaceae
Prunus lusitanica Portugal laurel Rosaceae
Prunus padus European bird cherry Rosaceae
Prunus subhirtella 'Pendula Plena Rosea' double weeping Higan cherry Rosaceae
Prunus virginiana chokecherry Rosaceae
Prunus x yedoensis Yoshino cherry Rosaceae
Psephellus dealbatus ( syn. Centaurea dealbata ) Persian cornflower, knapweed Asteraceae
Pseudofumaria lutea yellow corydalis Papaveraceae
Pseudotsuga menziesii Douglas fir Pinaceae
Pteris cretica table fern, ribbon fern, Cretan brake fern Pteridaceae
Pteris ensiformis table fern, silver lace fern, variegated brake fern Pteridaceae
Pterocarya spp. wingnut Juglandaceae
Pulmonaria saccharata lungwort Boraginaceae
Pulsatilla vulgaris pasque flower Ranunculaceae
Purshia tridentata antelope bitterbrush Rosaceae
Pyracantha coccinea pyracantha, scarlet firethorn Rosaceae
Pyracantha fortuneana Chinese firethorn Rosaceae
Pyracantha koidzumii Formosa firethorn, Taiwan firethorn Rosaceae
Pyrus calleryana ornamental pear, Callery pear Rosaceae
Pyrus communis European pear, common pear Rosaceae
Pyrus pyrifolia Asian pear Rosaceae
Pyrus salicifolia willowleaf pear Rosaceae
Quercus acutissima sawtooth oak Fagaceae
Quercus alba white oak Fagaceae
Quercus coccinea scarlet oak Fagaceae
Quercus garryana Garry oak Fagaceae
Quercus macrocarpa bur oak Fagaceae
Quercus palustris pin oak Fagaceae
Quercus phellos willow oak Fagaceae
Quercus robur English oak Fagaceae
Quercus rubra red oak Fagaceae
Quercus x warei 'Long' Regal Prince oak Fagaceae
Radermachera sinica China doll Bignoniaceae
Ranunculus asiaticus ranunculus, Persian buttercup Ranunculaceae
Ranunculus ficaria lesser celandine, pilewort Ranunculaceae
Ranunculus repens creeping buttercup Ranunculaceae
Raoulia australis scab plant, scabwort, common mat daisy Asteraceae
Raphanus sativus radish Brassicaceae
Ravenea rivularis majesty palm Arecaceae
Rehderodendron macrocarpum Chinese rehderodendron Styracaceae
Rhapis excelsa lady palm Arecaceae
Rheum palmatum Chinese rhubarb, ornamental rhubarb Polygonaceae
Rheum rhabarbarum rhubarb Polygonaceae
Rhododendron deciduous hybrid azalea Ericaceae
Rhododendron 'Blue Diamond' Blue Diamond rhododendron Ericaceae
Rhododendron 'Coral Bells' pink hose in hose azalea, Kurume evergreen azalea Ericaceae
Rhododendron 'Hino Crimson' Hino Crimson azalea Ericaceae
Rhododendron 'PJM' PJM rhododendron Ericaceae
Rhododendron 'Purple Splendor' purple splendor azalea Ericaceae
Rhododendron 'Unique' Unique rhododendron Ericaceae
Rhododendron (evergreen spp. & cvs.) rhododendron Ericaceae
Rhododendron cv. azalea Ericaceae
Rhododendron groenlandicum Labrador tea Ericaceae
Rhododendron impeditum impeditum rhododendron Ericaceae
Rhododendron macrophyllum Pacific rhododendron Ericaceae
Rhodohypoxis baurii starflower, red-star Hypoxidaceae
Rhodotypos scandens black jetbead Rosaceae
Rhus glabra smooth sumac Anacardiaceae
Rhus typhina staghorn sumac Anacardiaceae
Ribes alpinum alpine currant Grossulariaceae
Ribes divaricatum coast black gooseberry, spreading gooseberry Grossulariaceae
Ribes nigrum black currant Grossulariaceae
Ribes sanguineum flowering currant, winter currant Grossulariaceae
Ribes uva-crispa gooseberry Grossulariaceae
Ricinus communis castor bean Euphorbiaceae
Robinia pseudoacacia black locust Fabaceae
Rodgersia aesculifolia fingerleaf rodgersia Saxifragaceae
Rodgersia pinnata rodgersia Saxifragaceae
Rosa 'Ballerina' Ballerina rose, hybrid musk rose Rosaceae
Rosa 'Golden Wings' Golden Wings rose, hybrid pimpinellifolia shrub rose Rosaceae
Rosa 'Jacqueline du Pre' Jacqueline du Pre rose Rosaceae
Rosa 'Macdub' Dublin Bay rose, floribunda climbing rose Rosaceae
Rosa 'Meidomonac' Bonica rose, floribunda rose Rosaceae
Rosa 'The Fairy' polyantha rose Rosaceae
Rosa cvs. hybrid tea rose, cut flower rose, miniature potted rose Rosaceae
Rosa Meineble cvs. Meidiland carpet rose Rosaceae
Rosa nutkana Nootka rose Rosaceae
Rosa rugosa rugosa rose Rosaceae
Rosa woodsii native rose, Wood's rose Rosaceae
Rosmarinus officinalis rosemary Lamiaceae
Rubus armeniacus Himalayan blackberry Rosaceae
Rubus fruticosus 'Black Satin' thornless blackberry Rosaceae
Rubus idaeus raspberry Rosaceae
Rubus laciniatus cutleaf evergreen blackberry Rosaceae
Rubus parviflorus thimbleberry Rosaceae
Rubus rolfei 'Emerald Carpet' Formosan Carpet rubus, creeping Taiwan bramble Rosaceae
Rubus spectabilis salmonberry Rosaceae
Rubus ursinus x idaeus boysenberry Rosaceae
Rudbeckia fulgida black-eyed Susan Asteraceae
Rudbeckia hirta black-eyed Susan, gloriosa daisy Asteraceae
Rudbeckia laciniata 'Herbstsonne' autumn sun coneflower Asteraceae
Rudbeckia occidentalis 'Green Wizard' Green Wizard coneflower, western coneflower Asteraceae
Ruellia brittoniana Mexican petunia Acanthaceae
Rumex acetosella sheep sorrel Polygonaceae
Rumex crispus curled dock Polygonaceae
Rumex sanguineus bloody dock, red veined dock Polygonaceae
Rumohra adiantiformis