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1,763 Plants
- Kaa-Long: Bauhinia acuminata
- Kaala Cyrtandra: Cyrtandra kaalae, Cyrtandra x kaalae
- Kaala Melicope: Melicope kaalaensis
- Kaala Pelea: Melicope kaalaensis
- Kaala Rockwort: Nototrichium humile
- Kaala Stenogyne: Stenogyne kaalae
- Kaanapali Stenogyne: Stenogyne viridis
- Kaapeape: Cyrtomium caryotideum
- Kaber Mustard: Sinapis arvensis
- Kabitan Hosta: Hosta sieboldii ’Kabitan’
- Kablouna Calendula: Calendula officinalis ’Kablouna’
- Kabob Tomato Lycopersicon Lycopersicum: Lycopersicon lycopersicum ’Kabob’
- Kabocha: Cucurbita maxima ’Ambercup’, Cucurbita maxima ’Cha-Cha’, Cucurbita maxima ’Hokkori’, Cucurbita maxima ’Special Export’
- Kabonori: Gracilaria textorii, Gracilaria textorii cunninghamii, Gracilaria textorii tenuis
- Kabschia Saxifrage: Saxifraga burseriana, Saxifraga ferdinandi-coburgi, Saxifraga ferdinandi-coburgi ’Dracula’, Saxifraga iranica, Saxifraga juniperifolia, Saxifraga lilacina, Saxifraga marginata, Saxifraga ’Myra Cambria’, Saxifraga sancta var. macedonica, Saxifraga scardica, Saxifraga tombeanensis, Saxifraga vandellii, Saxifraga x apiculata’Alba’, Saxifraga x apiculata’Gregor Mendel’, Saxifraga x arco-valleyi’Hocker’s Edge’, Saxifraga x borisii’Marianna’, Saxifraga x boydii’Hindhead Seedling’, Saxifraga x boydii’Mondscheinsonate’, Saxifraga x bursiculata’King Lear’, Saxifraga x gloriana’Amitie’, Saxifraga x gloriana’Godiva’, Saxifraga x irvingii’Jenkinsae’, Saxifraga x kelleri’Suendermannii’
- Kabuki Ballet Daylily: Hemerocallis ’Kabuki Ballet’
- Kabuki Dancer Daylily: Hemerocallis ’Kabuki Dancer’
- Kabuki Daylily: Hemerocallis ’Kabuki’
- Kabuki Plus Daylily: Hemerocallis ’Kabuki Plus’
- Kachina Daisy: Erigeron kachinensis
- Kachina Dancer Daylily: Hemerocallis ’Kachina Dancer’
- Kachina Fleabane: Erigeron kachinensis
- Kacie Boy Daylily: Hemerocallis ’Kacie Boy’
- Kacip Fatimah: Labisia pumila
- Kadam: Neonauclea purpurea
- Kadibiri: Sclerolobium guianense
- Kadjatoa: Eugeissona utilis
- Kadjoesi Auka: Vataireopsis surinamensis
- Kadota Fig: Ficus carica ’Kadota’
- Kadul: Dischidia minor
- Kaempfer’s Glorybower: Clerodendrum kaempferi
- Kaempferia: Kaempferia rotunda
- Kaete Waechter Daylily: Hemerocallis ’Kaete Waechter’
- Kaffir Fig: Ficus lutea
- Kaffir Lily: Clivia miniata ’French Hybrid’
- Kaffir Lime: Citrus hystrix
- Kaffir Potato: Plectranthus esculentus
- Kaffir-lily: Clivia minata, Schizostylis coccinea
- Kaffirboom Coral Tree: Erythrina fusca
- Kafir Lily: Clivia caulescens, Clivia miniata
- Kafir Palm: Jubaeopsis caffra
- Kaga Nishiki Sedge: Carex dolichostachya var. glabberima ’Kaga Nishiki’
- Kago-No-Ki: Actinodaphne lancifolia
- Kah-nee-tah Tall Bearded Iris: Iris ’Kah-Nee-Tah’
- Kahana Valley Cyrtandra: Cyrtandra crenata
- Kahanae Cyrtandra: Cyrtandra kahanaensis, Cyrtandra x kahanaensis
- Kahika: Dacrycarpus dacrydioides
- Kahikatea: Dacrycarpus dacrydioides
- Kahila Garland-Lily: Hedychium gardnerianum
- Kahili Flower: Grevillea banksii
- Kahili Ginger: Hedychium gardnerianum, Hedychium gardnerianum ’Kahili Fiesta’
- Kahiliflower: Grevillea banksii
- Kahn Bloody Cranesbill: Geranium sanguineum’Kahn’
- Kaholuamanu Melicope: Melicope macropus
- Kaholuamanu Schiedea: Schiedea helleri
- Kahuaha Forest Peperomia: Peperomia rockii
- Kai Lan: Brassica oleracea var. alboglabra ’Full White’, Brassica oleracea var. alboglabra ’New Veg-gin’, Brassica oleracea var. alboglabra ’Veg-gin’
- Kai Silversword: Argyroxiphium kai
- Kaibab Agave: Agave utahensis kaibabensis
- Kaibab Beardtongue: Penstemon pseudoputus
- Kaibab Bladder-Pod: Lesquerella kaibabensis
- Kaibab Bladderpod: Lesquerella kaibabensis
- Kaibab Draba: Draba asprella Greene var. kaibabensis C.L.Hitchc.
- Kaibab Indian Paintbrush: Castilleja kaibabensis
- Kaibab Indian-Paintbrush: Castilleja kaibabensis
- Kaibab Pediocactus: Pediocactus paradinei
- Kaibab Pincushion Cactus: Pediocactus paradianei, Pediocactus paradinei
- Kaibab Plateau Beardtongue: Penstemon pseudoputus
- Kaibab Plateau Indian Paintbrush: Castilleja kaibabensis
- Kaibab Pussytoes: Antennaria rosea rosea
- Kaibab Sedge: Carex curatorum
- Kaibab Suncup: Camissonia specuicola hesperia
- Kaibab Whitlowgrass: Draba asprella Greene var. kaibabensis C.L.Hitchc.
- Kaiholena Cyanea: Cyanea stictophylla
- Kailan: Brassica ’Gai Lohn’, Brassica oleracea var. alboglabra ’Green Lance’, Brassica oleracea var. alboglabra ’Happy Rich’
- Kaimi Clover: Desmodium incanum
- Kaiparowits Beardtongue: Penstemon atwoodii
- Kaiparowits Milkvetch: Astragalus malacoides
- Kairn’s Sensitive-briar: Mimosa latidens
- Kairns Sensitive-briar: Mimosa latidens
- Kaisai: Cassia fistula
- Kajimbourra: Angophora costata
- Kaka Beak: Clianthus puniceus, Clianthus puniceus ’Roseus’
- Kaka-Beak: Clianthus puniceus
- Kakadu Daylily: Hemerocallis ’Kakadu’
- Kakaho: Cortaderia fulvida
- Kakea Clermontia: Clermontia kakeana
- Kaki: Diospyros kaki, Diospyros kaki ’Fuyu’, Diospyros kaki Thunb. ’Hachiya’, Diospyros kaki ’Ichikikei Jiro’, Diospyros kaki ’Jiro’, Diospyros kaki ’Matsumoto Wase Fuyu’, Diospyros kaki ’Sheng’, Diospyros kaki ’Tamopan’, Diospyros kaki ’Tanenashi’
- Kaki Daylily: Hemerocallis ’Kaki’
- Kakiran: Epipactis thunbergii
- Kako Bamboo: Dendrocalamus hamiltonii
- Kakonakona: Panicum xerophilum
- Kala Daylily: Hemerocallis ’Kala’
- Kalahari Christmas Tree: Dichrostachys cinerea
- Kalahari Daylily: Hemerocallis ’Kalahari’
- Kalahari Safari Daylily: Hemerocallis ’Kalahari Safari’
- Kalahari Sand Acacia: Acacia luederitzii var. Luederitzii
- Kalai Hot Pepper: Capsicum annuum ’Kalia’
- Kalalau Valley Remya: Remya montgomeryi
- Kalalau Valley Starviolet: Wiegmannia tryblium
- Kalalau Valley Stenogyne: Stenogyne campanulata
- Kalamalo: Eragrostis monticola
- Kalamazoo Dewberry: Rubus uvidus
- Kalanchoe: Kalanchoe beharensis ’Brown Dwarf’, Kalanchoe beharensis ’Chocolate Chip’, Kalanchoe beharensis ’Fang’, Kalanchoe blossfeldiana ’Meru’, Kalanchoe blossfeldiana ’Simone’, Kalanchoe bracteata, Kalanchoe carnea ’Modoc’, Kalanchoe ceratophylla, Kalanchoe fedtschenkoi, Kalanchoe grandidieri, Kalanchoe hildebrandtii, Kalanchoe longiflora, Kalanchoe manginii, Kalanchoe orgyalis, Kalanchoe ’Pink Zinfandel’, Kalanchoe prolifica, Kalanchoe sexangularis, Kalanchoe thyrsiflora, Kalanchoe thyrsiflora ’Bronze Sculpture’, Kalanchoe uniflora
- Kalanchoe Magic Tower: Kalanchoe serrata
- Kalanchoe Rhombopilosa: Kalanchoe rhombopilosa
- Kalanchoe Stonecrop: Kalanchoe fedtschenkoi
- Kalapari: Neoraimondia herzogiana
- Kale: Beta oleracea var. acephala ’Blue Armor’, Brassica oleracea, Brassica oleracea ’Bear Necessities’, Brassica oleracea ’Budget Cuts’, Brassica oleracea ’Darkibor’, Brassica oleracea ’Dwarf Blue Curled Scotch’, Brassica oleracea ’Dwarf Blue Curled Vates’, Brassica oleracea ’Grunkohl’, Brassica oleracea ’Gulag Stars’, Brassica oleracea ’Jersey Walking Stick’, Brassica oleracea ’Lacinato’, Brassica oleracea ’Nero Di Toscana’, Brassica oleracea ’Red Ursa’, Brassica oleracea ’Reflex’, Brassica oleracea ’Semi Dwarf Westlandse’, Brassica oleracea ’Starbor’, Brassica oleracea ’Top Bunch’, Brassica oleracea ’Toscano’, Brassica oleracea ’Tuscano’, Brassica oleracea var. acephala ’Blue Armor’, Brassica oleracea var. acephala ’Blue Ridge’, Brassica oleracea var. acephala ’Cottagers’, Brassica oleracea var. acephala ’Pentland Brig’, Brassica oleracea var. acephala ’Red Winter’, Brassica oleracea var. acephala ’Rubibor’, Brassica oleracea var. acephala ’Squire’, Brassica oleracea var. acephala ’Westland Winter’, Brassica oleracea ’Western Front’, Brassica oleracea ’White Russian’
- Kalebas: Crescentia cujete
- Kaleidomania Daylily: Hemerocallis ’Kaleidomania’
- Kaleidoscope Coleus: Solenostemon ’Kaleidoscope’
- Kaleidoscope Dreams Daylily: Hemerocallis ’Kaleidoscope Dreams’
- Kaleidoscope Fantasy Daylily: Hemerocallis ’Kaleidoscope Fantasy’
- Kaleidoscope Moth Orchid: Phalaenopsis Baldan’s Kaleidoscope
- Kaleidoscope Shrub Rose: Rosa ’Kaleidoscope’
- Kalgoorlie Daylily: Hemerocallis ’Kalgoorlie’
- Kali Daylily: Hemerocallis ’Kali’
- Kalia: Eremalche parryi kernensis
- Kaliandra: Calliandra houstoniana
- Kalich’s Cyrtandra: Cyrtandra kalihii
- Kalifas Horn Arilbred Iris: Iris ’Kalifa’s Horn’
- Kalij Pheasant: Lophura leucomelanos
- Kalili: Sclerolobium guianense
- Kalimantan Mango: Mangifera casturi
- Kalimeris: Kalimeris incisa ’Variegata’
- Kalina Daylily: Hemerocallis ’Kalina’
- Kalipso Spurge: Euphorbia ’Kalipso’
- Kalita Daylily: Hemerocallis ’Kalita’
- Kallista Daylily: Hemerocallis ’Kallista’
- Kalm’s Brome: Bromus kalmii
- Kalm’s Hawkweed: Hieracium kalmii
- Kalm’s Lobelia: Lobelia kalmii
- Kalmia Flowered Deutzia: Deutzia × kalmiiflora
- Kalms Brome: Bromus kalmii
- Kalms Hawkweed: Hieracium kalmii
- Kalo: Colocasia esculenta
- Kalon Daylily: Hemerocallis ’Kalon’
- Kalorama Daylily: Hemerocallis ’Kalorama’
- Kaluaaha Valley Peperomia: Peperomia degeneri
- Kaluha: Schoenoplectus juncoides
- Kalura Romaine Lettuce: Lactuca sativa’Kalura’
- Kalutara Daylily: Hemerocallis ’Kalutara’
- Kalwerbossie: Pelargonium sidoides
- Kalwerbossie Geranium: Pelargonium sidoides
- Kam Shu T’ang: Callerya reticulata
- Kama Sutra Menta: Satureja viminea
- Kamahi: Weinmannia racemosa
- Kamakahala: Labordia cyrtandrae, Labordia fagraeoidea, Labordia lydgatei, Labordia tinifolia var. wahiawaensis
- Kamakahala Lau Li’i: Labordia waialealae
- Kamakahala-Lau-Lii: Labordia waialealae
- Kamala Tree: Mallotus philippensis
- Kamalo Gulch Catchfly: Silene alexandri
- Kamalo Gulch Schiedea: Schiedea lydgatei
- Kamalo Pritchardia: Pritchardia munroi
- Kamani: Calophyllum inophyllum
- Kamanomano: Cenchrus agrimonioides, Cenchrus agrimonioides var. agrimonioides, Cenchrus agrimonioides var. laysanensis
- Kamapua’a: Kadua fluviatilis
- Kambroo: Fockea angustifolia
- Kamchatica Rockcress: Arabis kamchatica
- Kamchatka Aconite: Aconitum maximum
- Kamchatka Buttercup: Ranunculus kamchaticus
- Kamchatka Fritillary: Fritillaria camschatcensis
- Kamchatka Globeflower: Trollius riederianus
- Kamchatka Monkshood: Aconitum maximum
- Kamchatka Rhododendron: Rhododendron camtschaticum
- Kamchatka Spike-Rush: Eleocharis kamtschatica
- Kamchatka Spikerush: Eleocharis kamtschatica
- Kamchatka Thistle: Cirsium kamtschaticum
- Kamchatka Whitlowgrass: Draba kamtschatica
- Kamias: Averrhoa bilimbi
- Kamikaze Daylily: Hemerocallis ’Kamikaze’
- Kamo’oloa Cyrtandra: Cyrtandra kamooloaensis
- Kamraj: Helminthostachys zeylanica
- Kamschatca Stonecrop: Sedum kamtschaticum ellacombianum, Sedum kamtschaticum var. floriferum
- Kamschaticum Sedum: Sedum kamschaticum
- Kamschatka Stonecrop: Sedum kamtschaticum ellacombianum, Sedum kamtschaticum var. floriferum ’Weihenstephaner Gold’
- Kamtschatca Mountain-Avens: Dryas octopetala var. kamtschatica
- Kamuka Tomato Lycopersicon Lycopersicum: Lycopersicon lycopersicum ’Kamuka’
- Kamuri-zasa Bamboo: Pleioblastus viridistriatus ’Kamuri-Zasa’
- Kanakambaram: Crossandra infundibuliformis, Crossandra pungens
- Kananga Cycad: Encephalartos poggei
- Kanani Daylily: Hemerocallis ’Kanani’
- Kanaria Sneezeweed: Helenium ’Kanaria’
- Kanawao: Broussaisia arguta
- Kanawao Ke’oke’o: Cyrtandra paludosa, Cyrtandra paludosa var. paludosa Gaud.
- Kanawao-Ke’oke’o: Cyrtandra paludosa
- Kandy Apple Canna Lily: Canna x generalis’Kandy Apple’
- Kane Breadroot: Pediomelum megalanthum var. epipsilum
- Kane County Twinpod: Physaria lepidota
- Kane Everet Daylily: Hemerocallis ’Kane Everet’
- Kangaroo Apple: Solanum aviculare, Solanum lanceolatum
- Kangaroo Fern: Microsorum pustulatum
- Kangaroo Grass: Themeda quadrivalvis, Themeda triandra
- Kangaroo Island Spider Orchid: Caladenia ovata
- Kangaroo Ivy: Cissus antarctica
- Kangaroo Joe Daylily: Hemerocallis ’Kangaroo Joe’
- Kangaroo Paw: Anigozanthos ’Bush Ember’, Anigozanthos ’Bush Garnet’, Anigozanthos ’Bush Illusion’, Anigozanthos ’Bush Nugget’, Anigozanthos ’Bush Pearl’, Anigozanthos ’Bush Ranger’, Anigozanthos ’Bush Ruby’, Anigozanthos flavidus, Anigozanthos manglesii ’Kanga Orange’, Anigozanthos manglesii ’Kanga Red’, Anigozanthos manglesii ’Royal Cheer’
- Kangaroo Paw Fern: Microsorum diversifolium
- Kangaroo Paws: Anigozanthos ’Bush Emerald’, Anigozanthos ’Bush Games’, Anigozanthos manglesii ’Kanga Pink’
- Kangaroo Pocket: Dischidia pectinoides
- Kangaroo Pouch Daylily: Hemerocallis ’Kangaroo Pouch’
- Kangaroo Rose: Lapidaria margaretae
- Kangaroo Thorn Acacia Paradoxa: Acacia hamulosa
- Kangaroo Vine: Cissus antarctica
- Kangu: Flacourtia sapida
- Kaningo Daylily: Hemerocallis ’Kaningo’
- Kanji Bush: Acacia pyrifolia
- Kanjiro Camellia: Camellia sasanqua ’Kanjiro’
- Kankakee Mallow: Iliamna rivularis
- Kanna: Sceletium tortuosum
- Kanooka: Tristaniopsis laurina
- Kanpes: Pithecellobium unguis-cati
- Kanpococum: Caesalpinia yucatanensis
- Kansan Daylily: Hemerocallis ’Kansan’
- Kansas Arrowhead: Sagittaria ambigua
- Kansas Aschisma Moss: Aschisma kansanum
- Kansas City Canna Lily: Canna x generalis’Kansas City’
- Kansas City Hail Daylily: Hemerocallis ’Kansas City Hail’
- Kansas City Pearl Daylily: Hemerocallis ’Kansas City Pearl’
- Kansas City Plaza Daylily: Hemerocallis ’Kansas City Plaza’
- Kansas Double Peony: Paeonia x ’Kansas’
- Kansas Gayfeather: Liatris pycnostachya, Liatris pycnostachya ’Eureka’
- Kansas Gold Daylily: Hemerocallis ’Kansas Gold’
- Kansas Haswthorn: Crataegus coccinioides, Crataegus coccinioides var. corallicola, Crataegus coccinioides var. pottsii
- Kansas Hawthorn: Crataegus coccinioides, Crataegus coccinioides var. corallicola, Crataegus coccinioides var. pottsii
- Kansas Milkweed: Asclepias syriaca
- Kansas Rebel Daylily: Hemerocallis ’Kansas Rebel’
- Kansas Snakeroot: Echinacea angustifolia
- Kansas Sunrise Daylily: Hemerocallis ’Kansas Sunrise’
- Kansas Sunset Daylily: Hemerocallis ’Kansas Sunset’
- Kansas Thistle: Solanum rostratum
- Kansas Woodsia: Woodsia ilvensis
- Kansu Gentian: Gentiana gracilipes
- Kantali Champa: Artabotrys siamensis
- Kantara Daylily: Hemerocallis ’Kantara’
- Kanuka: Kunzea ericoides
- Kanzacam: Pachycereus gaumeri
- Kaori Blanc: Agathis moorei
- Kaori Rouge: Agathis corbassonii
- Kap Farvel Hawkweed: Hieracium scholanderi
- Kapana: Phyllostegia grandiflora
- Kapok: Ceiba pentandra, Pseudobombax septenatum
- Kapok Tree: Bombax ceiba, Ceiba acuminata, Ceiba pentandra, Cochlospermum gillivraei
- Kapokkie Heath: Erica peziza
- Kapoktree: Ceiba pentandra, Ceiba pentandra var. caribaea
- Kaponga: Cyathea smithii
- Kappie Blenny: Fernandezia nigro-signata
- Kappis Choice Daylily: Hemerocallis ’Kappis Choice’
- Kappler’s Bristle Fern: Trichomanes kapplerianum
- Kapu Melicope: Melicope radiata
- Kapua Chinalaurel: Antidesma kapuae
- Kapuka: Griselinia littoralis, Griselinia littoralis ’Variegata’
- Kara Hosta: Hosta ’Kara’
- Kara Kum Daylily: Hemerocallis ’Kara Kum’
- Kara Mia Daylily: Hemerocallis ’Kara Mia’
- Kara Nishiki Azalea: Rhododendron ’Kara Nishiki’
- Karachi Silk Daylily: Hemerocallis ’Karachi Silk’
- Karaka Nut: Corynocarpus laevigatus
- Karakaranut: Corynocarpus laevigatus
- Karamu: Coprosma robusta
- Karamyschev’s Wheat: Triticum karamyschevii
- Karanda: Carissa carandas
- Karapa Bossi: Dipteryx odorata
- Karate Kid Daylily: Hemerocallis ’Karate Kid’
- Karateaka Daylily: Hemerocallis ’Karateaka’
- Karee Moer: Trichodiadema stellatum
- Kareel: Capparis decidua
- Karefo: Schleinitzia novo-guineensis
- Kareho: Schleinitzia novo-guineensis
- Karen Azalea: Rhododendron x gable ’Karen’
- Karen Christine Tall Bearded Iris: Iris ’Karen Christine’
- Karen Hosta: Hosta ’Karen’
- Karen Lynn Daylily: Hemerocallis ’Karen Lynn’
- Karen Lynne Daylily: Hemerocallis ’Karen Lynne’
- Karen Maddock Tall Bearded Iris: Iris ’Karen Maddock’
- Karen My Love Daylily: Hemerocallis ’Karen My Love’
- Karen Rose Daylily: Hemerocallis ’Karen Rose’
- Karen Sue Daylily: Hemerocallis ’Karen Sue’
- Karen Tall Bearded Iris: Iris ’Karen’
- Karen Wilkerson Daylily: Hemerocallis ’Karen Wilkerson’
- Karen’s Appalachian Blush Dogwood: Cornus florida ’Karen’s Appalachian Blush’
- Karens Curls Daylily: Hemerocallis ’Karen’s Curls’
- Kari Yasu: Miscanthus tinctorius
- Kariba Weed: Salvinia molesta
- Kariba-Weed: Salvinia molesta
- Kariho: Schleinitzia novo-guineensis
- Karin Bentley Daylily: Hemerocallis ’Karin Bentley’
- Karin Hosta: Hosta ’Karin’
- Karita: Swertia chirita
- Karkade: Hibiscus sanguineus
- Karl Feldstadt Canna Lily: Canna x generalis’Karl Feldstadt’
- Karl Foerster Feather Reed Grass: Calamagrostis x acutiflora ’Karl Foerster’
- Karl Foerster’s Feather Reed Grass: Calamagrostis × acutiflora ’Karl Foerster’
- Karl Petersen Daylily: Hemerocallis ’Karl Petersen’
- Karl Rosenfield Double Peony: Paeonia x ’Karl Rosenfield’
- Karla Kitamura Daylily: Hemerocallis ’Karla Kitamura’
- Karley Rose Oriental Fountain Grass: Pennisetum orientale
- Karley Rose White Fountain Grass: Pennisetum orientale
- Karlsruh Yucca: Yucca karlsruhensis
- Karma Daylily: Hemerocallis ’Karma’
- Karmic Treasure Daylily: Hemerocallis ’Karmic Treasure’
- Karmina Cranesbill: Geranium ’Karmina’
- Karneval Der Nacht Daylily: Hemerocallis ’Karneval Der Nacht’
- Karnock Village Daylily: Hemerocallis ’Karnock Village’
- Karo: Pittosporum crassifolium
- Karolina Kozka Daylily: Hemerocallis ’Karolina Kozka’
- Karoo Cycad: Encephalartos lehmannii
- Karoo Rose: Lapidaria margaretae
- Karri: Eucalyptus diversicolor
- Karroo Bluebush: Diospyros lycioides
- Karroo Thorn: Acacia karroo
- Karst Schneckenklee: Medicago carstiensis
- Kartang: Centrolobium paraense
- Karum Tree: Pongamia pinnata
- Karwinski’s Sage: Salvia karwinskii
- Kas: Cassia fistula
- Kasan Pyracantha: Pyracantha coccinea ’Kasan’
- Kasbah Fez Daylily: Hemerocallis ’Kasbah Fez’
- Kasbah Seductor Daylily: Hemerocallis ’Kasbah Seductor’
- Kase Sek: Samyda pubescens
- Kashan Daylily: Hemerocallis ’Kashan’
- Kashinoki-Ran: Gastrochilus japonicus
- Kashmir Bellflower: Campanula cashmeriana, Campanula cashmeriana ’Blue Cloud’
- Kashmir Canna Lily: Canna x generalis’Kashmir’
- Kashmir Cypress: Cupressus cashmeriana
- Kashmir Deodar Cedar: Cedrus deodar var. Kashmir
- Kashmir False Spirea: Sorbaria tomentosa
- Kashmir Rowan: Sorbus cashmiriana
- Kashmir Sage: Phlomis cashmeriana
- Kashmir White Tall Bearded Iris: Iris ’Kashmir White’
- Kasondi Senna: Senna sophera
- Kaspyant: Senna occidentalis
- Kass Draba: Draba kassii
- Kass Rockcress: Draba kassii
- Kass’ Draba: Draba kassii
- Kasseler Gold Hosta: Hosta ’Kasseler Gold’
- Kassod Tree: Senna siamea
- Kat Sola: Aeschynomene indica
- Katahdin Daylily: Hemerocallis ’Katahdin’
- Katchu: Colocasia esculenta
- Kate Akins Daylily: Hemerocallis ’Kate Akins’
- Kate Carpenter Daylily: Hemerocallis ’Kate Carpenter’
- Kate Daylily: Hemerocallis ’Kate’
- Kate Hill Daylily: Hemerocallis ’Kate Hill’
- Kate Hollingsworth Daylily: Hemerocallis ’Kate Hollingsworth’
- Kate Smith Daylily: Hemerocallis ’Kate Smith’
- Katemfe: Thaumatococcus daniellii
- Kates Mountain Clover: Trifolium virginicum
- Katey Scarlett Daylily: Hemerocallis ’Katey Scarlett’
- Katha Rice Canna Lily: Canna x generalis’Katha Rice’
- Katheerine Adele Cranesbill: Geranium × oxonianum ’Katherine Adele’
- Katherine Elizabeth Cox Daylily: Hemerocallis ’Katherine Elizabeth Cox’
- Katherine Garden Phlox: Phlox paniculata ’Katherine’
- Katherine Huggins Daylily: Hemerocallis ’Katherine Huggins’
- Katherine Jaffray Daylily: Hemerocallis ’Katherine Jaffray’
- Katherine Kennedy Carmichael Daylily: Hemerocallis ’Katherine Kennedy Carmichael’
- Katherine Lewis Hosta: Hosta ’Katherine Lewis’
- Katherine Sprouse Daylily: Hemerocallis ’Katherine Sprouse’
- Katherine-Wheel: Scadoxus multiflorus katherinae
- Kathleen Adair Daylily: Hemerocallis ’Kathleen Adair’
- Kathleen Elsie Randall Daylily: Hemerocallis ’Kathleen Elsie Randall’
- Kathleen Glenn Dale Azalea: Rhododendron ’Kathleen’
- Kathleen Hosta: Hosta ’Kathleen’
- Kathleen Kay Nelson Tall Bearded Iris: Iris ’Kathleen Kay Nelson’
- Kathleen Salter Daylily: Hemerocallis ’Kathleen Salter’
- Kathleen Terrell Daylily: Hemerocallis ’Kathleen Terrell’
- Kathryn Barfield Daylily: Hemerocallis ’Kathryn Barfield’
- Kathryn Daylily: Hemerocallis ’Kathryn’
- Kathryn Fields Daylily: Hemerocallis ’Kathryn Fields’
- Kathryn Mariea Daylily: Hemerocallis ’Kathryn Mariea’
- Kathryn Nelson Daylily: Hemerocallis ’Kathryn Nelson’
- Kathryn Rose Painted Nettle Solenostemon Scutellar: Solenostemon scutellarioides ’Kathryn Rose’
- Kathryn Summers Daylily: Hemerocallis ’Kathryn Summers’
- Kathul Mountain Draba: Draba murrayi
- Kathy Ann Batson Yaupon Holly: Ilex vomitoria ’Kathy Ann Batson’
- Kathy Barnhart Daylily: Hemerocallis ’Kathy Barnhart’
- Kathy Dove Daylily: Hemerocallis ’Kathy Dove’
- Kathy Hicks Daylily: Hemerocallis ’Kathy Hicks’
- Kathy Kat Daylily: Hemerocallis ’Kathy Kat’
- Kathy Lou Daylily: Hemerocallis ’Kathy Lou’
- Kathy O Hosta: Hosta ’Kathy O’
- Kathy Parnessesse Daylily: Hemerocallis ’Kathy Parnessesse’
- Kati Vandunk Daylily: Hemerocallis ’Kati Vandunk’
- Katie Canna Lily: Canna x generalis’Katie’
- Katie Daylily: Hemerocallis ’Katie’
- Katie Elizabeth Miller Daylily: Hemerocallis ’Katie Elizabeth Miller’
- Katie Lady Daylily: Hemerocallis ’Katie Lady’
- Katie Mcconnell Daylily: Hemerocallis ’Katie Mcconnell’
- Katie Ruellia: Ruellia elegans ’Katie Blue’
- Katie-koo Intermediate Bearded Iri: Iris ’Katie-Koo’
- Katinka Azalea: Rhododendron ’Katinka’
- Katira Gum: Astracantha heratensis
- Katis Blush Tall Bearded Iris: Iris ’Kati’s Blush’
- Katisue Daylily: Hemerocallis ’Katisue’
- Katmandu Daylily: Hemerocallis ’Katmandu’
- Katmandu Tall Bearded Iris: Iris ’Katmandu’
- Katoelimia: Dipteryx odorata
- Katoomba Daylily: Hemerocallis ’Katoomba’
- Katrina Jo Hosta: Hosta ’Katrina Jo’
- Katsura Tree: Cercidiphyllum japonicum, Cercidiphyllum japonicum ’Heronswood Globe’, Cercidiphyllum japonicum ’Raspberry’, Cercidiphyllum japonicum ’Rotfuchs’, Cercidiphyllum japonicum ’Ruby’, Cercidiphyllum japonicum ’Strawberry’, Cercidiphyllum magnificum ’Pendulum’
- Katsuragawa Beni Hosta: Hosta ’Katsuragawa Beni’
- Katsuragawa Hosta: Hosta ’Katsuragawa’
- Katsuratree: Cercidiphyllum japonicum ’Heronswood Globe’
- Katy Mcsparron Primrose: Primula veris ’Katy McSparron’
- Katy Petts Standard Dwarf Bearded Iri: Iris ’Katy Petts’
- Katys Blue Daylily: Hemerocallis ’Katy’s Blue’
- Kau Ni Yalewa: Sophora tomentosa
- Kau Silversword: Argyroxiphium kauense
- Kauai Beggarticks: Bidens cervicata
- Kauai Blacksnakeroot: Sanicula kauaiensis
- Kauai Bloodgrass: Isachne pallens
- Kauai Bluegrass: Poa siphonoglossa
- Kauai Bottlebrush: Metrosideros waialealae, Metrosideros waialealae (Rock) Rock var. fauriei (Levl.) J.W.Dawson & Stemmerm., Metrosideros waialealae (Rock) Rock var. waialealae (Rock) Rock
- Kauai Canyon Daylily: Hemerocallis ’Kauai Canyon’
- Kauai Catchbirdtree: Pisonia wagneriana
- Kauai Catchfly: Silene lanceolata
- Kauai Cheesewood: Pittosporum kauaiense
- Kauai Clermontia: Clermontia clermontioides clermontioides
- Kauai Colicwood: Myrsine kauaiensis
- Kauai Cove Daylily: Hemerocallis ’Kauai Cove’
- Kauai Cyanea: Cyanea fissa fissa
- Kauai Cyrtandra: Cyrtandra olona
- Kauai Delissea: Delissea rhytidosperma
- Kauai Dubautia: Dubautia microcephala
- Kauai False Lobelia: Trematolobelia kauaiensis
- Kauai Flatsedge: Cyperus rockii
- Kauai Geranium: Geranium kauaiense
- Kauai Hau Kuahiwi: Hibiscadelphus distans
- Kauai Hesperomannia: Hesperomannia lydgatei
- Kauai Island-Aster: Hesperomannia lydgatei
- Kauai Jackbean: Canavalia kauaiensis
- Kauai Kihifern: Adenophorus epigaeus
- Kauai Koki’o: Kokia kauaiensis
- Kauai Korthal Mistletoe: Korthalsella latissima
- Kauai Korthalsella: Korthalsella latissima
- Kauai Labordia: Labordia pumila
- Kauai Ma’oloa: Neraudia kauaiensis
- Kauai Melicope: Melicope kavaiensis
- Kauai Nehe: Lindheimera texana
- Kauai Neraudia: Neraudia kauaiensis
- Kauai Pa’iniu: Astelia waialealae
- Kauai Panicgrass: Panicum lineale
- Kauai Pelea: Melicope kavaiensis
- Kauai Phyllostegia: Phyllostegia waimeae
- Kauai Pipturus: Pipturus kauaiensis
- Kauai Prickly-Ash: Zanthoxylum kauaense
- Kauai Pricklyash: Zanthoxylum kauaense
- Kauai Pteralyxia: Pteralyxia kauaiensis
- Kauai Remya: Remya kauaiensis
- Kauai Sandmat: Chamaesyce halemanui
- Kauai Schiedea: Schiedea apokremnos, Schiedea kauaiensis
- Kauai Sedge: Carex kauaiensis
- Kauai Spurge: Euphorbia haeleeleana
- Kauai Starviolet: Wiegmannia foggiana
- Kauai Tomato Lycopersicon Lycopersicum: Lycopersicon lycopersicum ’Kauai’
- Kauai Treecotton: Kokia kauaiensis
- Kauai Wild Coffee: Psychotria greenwelliae
- Kauai Wormwood: Artemisia kauaiensis
- Kauai Yellow Loosestrife: Lysimachia kalalauensis
- Kauai Yellowwood: Ochrosia kauaiensis
- Kauaikinana Wood Fern: Dryopteris podosora
- Kauaikinana Woodfern: Dryopteris podosora
- Kaufmanniana Tulip: Tulipa ’Daylight’, Tulipa ’Ice Stick’
- Kauila: Alphitonia ponderosa, Colubrina oppositifolia
- Kaulfuss Lipfern: Cheilanthes kaulfussii
- Kaulfuss Spleenwort: Asplenium kaulfussii
- Kaulfuss’ Lipfern: Cheilanthes kaulfussii
- Kaulfuss’ Spleenwort: Asplenium kaulfussii
- Kaulu: Pteralyxia kauaiensis, Sapindus oahuensis
- Kaumahana: Korthalsella complanata, Korthalsella remyana
- Kauna’oa: Cuscuta sandwichiana
- Kaurasiga: Clidemia hirta
- Kauri: Agathis australis, Agathis robusta
- Kauri Renee Daylily: Hemerocallis ’Kauri Renee’
- Kausoni: Solanum torvum
- Kava: Piper methysticum
- Kava Kava: Piper methysticum
- Kaw Valley Peony: Paeonia ’Kaw Valley’
- Kawa Kawa: Macropiper excelsum ’Variegata’
- Kawa’u: Zanthoxylum dipetalum
- Kawaihae Hibiscadelphus: Hibiscadelphus bombycinus
- Kawaka New Zealand Cedar: Libocedrus plumosa
- Kawakami Maple: Acer caudatifolium
- Kawakawa: Macropiper excelsum
- Kawana Daylily: Hemerocallis ’Kawana’
- Kawanori: Prasiola japonica
- Kaweah Brodiaea: Brodiaea insignis
- Kaweah Lakes Fawn Lily: Erythronium pusaterii
- Kaweah Lakes Fawnlily: Erythronium pusaterii
- Kaweah Monkeyflower: Mimulus norrisii
- Kaweah River Bush Monkeyflower: Diplacus calycinus
- Kaweah River Phacelia: Phacelia egena
- Kaweah River Scorpion-Weed: Phacelia egena
- Kawelu: Eragrostis variabilis
- Kawich Range Beardtongue: Penstemon pseudospectabilis pseudospectabilis, Penstemon pudicus
- Kay Daylily: Hemerocallis ’Kay’
- Kay Dee Daylily: Hemerocallis ’Kay Dee’
- Kay Girl Daylily: Hemerocallis ’Kay Girl’
- Kay Grama: Bouteloua kayi
- Kay Gramma: Bouteloua kayi
- Kay Hodge Daylily: Hemerocallis ’Kay Hodge’
- Kay Mackellar Daylily: Hemerocallis ’Kay Mackellar’
- Kay Paris Magnolia: Magnolia grandiflora ’Kay Paris’
- Kay Parris Southern Magnolia: Magnolia grandiflora ’Kay Parris’
- Kay Parrish Daylily: Hemerocallis ’Kay Parrish’
- Kay’s Grama: Bouteloua kayi
- Kayak Hosta: Hosta ’Kayak’
- Kayes Hart Tongue Fern: Asplenium scolopendrium ’Laceratum Kaye’
- Kayla Daylily: Hemerocallis ’Kayla’
- Kayleigh Ann Daylily: Hemerocallis ’Kayleigh Ann’
- Kayleigh Jayne Louise Tall Bearded Iris: Iris ’Kayleigh Jayne Louise’
- Kaylen Hardy Wax Leaf Begonia: Begonia ’Kaylen’
- Kaylene Daylily: Hemerocallis ’Kaylene’
- Kayli Marie Daylily: Hemerocallis ’Kayli Marie’
- Kaylie Girl Daylily: Hemerocallis ’Kaylie Girl’
- Kaylyn Vandunk Daylily: Hemerocallis ’Kaylyn Vandunk’
- Kayo Standard Dwarf Bearded Iri: Iris ’Kayo’
- Kays Grama: Bouteloua kayi
- Kayto Nette Daylily: Hemerocallis ’Kayto Nette’
- Kayu Rapat: Parameria barbata
- Kazdadi Fir: Abies nordmanniana
- Kazuq Daylily: Hemerocallis ’Kazuq’
- Ke’oke’o: Hibiscus waimeae waimeae
- Keaau Valley Dubautia: Dubautia herbstobatae
- Keahi: Nesoluma polynesicum
- Keal’s Cyrtandra: Cyrtandra kealiae
- Kealia Cyanea: Cyanea recta
- Kealia Gulch Burr Cucumber: Sicyos erostratus
- Kearney Sumac: Rhus kearneyi
- Kearney’s Blue-Star: Amsonia kearneyana
- Kearney’s Bluestar: Amsonia fugatei, Amsonia kearneyana
- Kearney’s Buckwheat: Eriogonum nummulare
- Kearney’s Slimpod: Amsonia kearneyana
- Kearney’s Snakewood: Condalia warnockii var. kearneyana
- Kearney’s Sumac: Rhus kearneyi
- Kearneys Bluestar: Amsonia kearneyana
- Kearneys Sumac: Rhus kearneyi
- Kearny Condalia: Condalia warnockii var. kearneyana
- Kechapi: Sandoricum koetjape
- Kecia Daylily: Hemerocallis ’Kecia’
- Keck: Anthriscus sylvestris
- Keck’s Beardtongue: Penstemon leiophyllus var. keckii
- Keck’s Bluegrass: Poa keckii
- Keck’s Checkerbloom: Sidalcea keckii
- Kecks Checkerbloom: Sidalcea keckii
- Kedah Bungor: Lagerstroemia floribunda
- Kedang Belom: Callerya vasta
- Kedang Blum: Callerya vasta
- Kedong Dracaena: Dracaena ellenbeckiana
- Keek: Rorippa sylvestris
- Keeled Bladderpod: Lesquerella carinata
- Keeled Bulrush: Isolepis carinata
- Keeled Garlic: Allium carinatum, Allium carinatum pulchellum
- Keeled Silverside: Plagiochila nodulosa
- Keeled Tassel Fern: Lycopodium carinatum
- Keemo Sahbee Daylily: Hemerocallis ’Keemo Sahbee’
- Keen Eye Daylily: Hemerocallis ’Keen Eye’
- Keeners Golden Memories Daylily: Hemerocallis ’Keener’s Golden Memories’
- Keeno Daylily: Hemerocallis ’Keeno’
- Keep On Dancing Daylily: Hemerocallis ’Keep On Dancing’
- Keep Talking Daylily: Hemerocallis ’Keep Talking’
- Keever’s Orthotrichum Moss: Orthotrichum keeverae
- Keezie Daylily: Hemerocallis ’Keezie’
- Kefersteinia: Kefersteinia angustifolia
- Keg Cactus: Ferocactus viridescens var. littoralis
- Kei Apple: Dovyalis caffra
- Kei Bottlebrush: Greyia flanaganii
- Kei Cycad: Encephalartos princeps
- Kei Lily: Cyrtanthus sanguineus
- Kei River Cycad: Encephalartos princeps
- Keikansai: Meristotheca papulosa
- Keikos World Tall Bearded Iris: Iris ’Keiko’s World’
- Keiserskroon: Crassula perfoliata subsp. falcata ’Variegata’, Crassula perfoliata var. falcata
- Keith Carr Daylily: Hemerocallis ’Keith Carr’
- Keith Dean Daylily: Hemerocallis ’Keith Dean’
- Keith Greer Daylily: Hemerocallis ’Keith Greer’
- Keith Kent Daylily: Hemerocallis ’Keith Kent’
- Keithie Daylily: Hemerocallis ’Keithie’
- Kelat Skies Tall Bearded Iris: Iris ’Kelat Skies’
- Kelby Lynn Daylily: Hemerocallis ’Kelby Lynn’
- Kelkheim Daylily: Hemerocallis ’Kelkheim’
- Kellerman’s Sunflower: Helianthus kellermanii
- Kelley Lily: Lilium kelleyanum
- Kelley’s Lily: Lilium kelleyanum
- Kelli Michelle Daylily: Hemerocallis ’Kelli Michelle’
- Kellog Snapdragon: Neogaerrhinum strictum
- Kellogg Bitteroot: Lewisia kelloggii
- Kellogg Hawthorn: Crataegus kelloggii
- Kellogg Lily: Lilium kelloggii
- Kellogg Sedge: Carex lenticularis Michx. var. lipocarpa (Holm) L.A.Standley
- Kellogg’s Blackberry: Rubus kelloggii
- Kellogg’s Bluegrass: Poa kelloggii
- Kellogg’s Hawthorn: Crataegus kelloggii
- Kellogg’s Horkelia: Horkelia cuneata sericea
- Kellogg’s Lewisia: Lewisia kelloggii, Lewisia kelloggii hutchisonii, Lewisia kelloggii kelloggii
- Kellogg’s Lily: Lilium kelloggii
- Kellogg’s Monkey-Flower: Mimulus kelloggii
- Kellogg’s Monkeyflower: Mimulus kelloggii
- Kellogg’s Onion: Allium anceps
- Kellogg’s Purple Crapemyrtle: Lagerstroemia’Kellogg’s Purple’
- Kellogg’s Rush: Juncus kelloggii
- Kellogg’s Sedge: Carex lenticularis Michx. var. lipocarpa (Holm) L.A.Standley
- Kellogg’s Spurred Lupine: Lupinus argenteus
- Kellogg’s Tarweed: Hemizonia kelloggii
- Kellogg’s Umbrellawort: Tauschia kelloggii
- Kellogg’s Yampah: Perideridia kelloggii
- Kelloggia: Kelloggia galioides
- Kelloggs Breakfast Tomato: Lycopersicon lycopersicum ’Kellogg’s Breakfast’
- Kelloggs Tarweed: Hemizonia kelloggii
- Kelly Ann Daylily: Hemerocallis ’Kelly Ann’
- Kelly Baby Daylily: Hemerocallis ’Kelly Baby’
- Kelly Potter Daylily: Hemerocallis ’Kelly Potter’
- Kelly’s Girl Daylily: Hemerocallis ’Kelly’s Girl’
- Kelly’s Gold Box Elder Maple: Acer negundo ’Kelly’s Gold’
- Kelly’s Gold Golden-Leaved Boxelder: Acer negundo ’Kelly’s Gold’
- Kelly’s Lily: Lilium kelleyanum
- Kelm Lake Daylily: Hemerocallis ’Kelm Lake’
- Kelsey Hosta: Hosta ’Kelsey’
- Kelsey’s Cat’s-Eye: Cryptantha kelseyana
- Kelsey’s Cryptantha: Cryptantha kelseyana
- Kelsey’s Phlox: Phlox kelseyi
- Kelseys Cryptantha: Cryptantha kelseyana
- Kelseys Garden Daylily: Hemerocallis ’Kelsey’s Garden’
- Kelso Creek Monkeyflower: Mimulus shevockii
- Kelvin Pricklypear: Opuntia kelvinensis
- Kelvin’s Pricklypear: Opuntia kelvinensis
- Kelway Renaissance Tall Bearded Iris: Iris ’Kelway Renaissance’
- Kelway’s Coral Plume Plume Poppy: Macleaya microcarpa ’Kelway’s Coral Plume’
- Kemp Owyne Daylily: Hemerocallis ’Kemp Owyne’
- Kempion Daylily: Hemerocallis ’Kempion’
- Kempton Designer Daylily: Hemerocallis ’Kempton Designer’
- Ken Daylily: Hemerocallis ’Ken’
- Ken Henson Daylily: Hemerocallis ’Ken Henson’
- Ken Janeck Rhododendron: Rhododendron ’Ken Janeck’
- Ken Janek Rhododendron: Rhododendron yakusimanum ’Ken Janek’
- Ken’s Favorite Large-Cupped Daffodil: Narcissus ’Ken’s Favorite’
- Ken’s Favorite Long-Cupped Narcissus: Narcissus ’Ken’s Favorite’
- Kenaf: Hibiscus cannabinus, Hibiscus cannabinus ’Dowling’, Hibiscus cannabinus ’Everglades 41’, Hibiscus cannabinus ’Gregg’, Hibiscus cannabinus ’Sf-459’, Hibiscus cannabinus ’Tainung 2’
- Kenai Birch: Betula papyrifera kenaica
- Kenai Sedge: Carex kenaica, Carex × kenaica
- Kenan Daylily: Hemerocallis ’Kenan’
- Kendra Brazell Daylily: Hemerocallis ’Kendra Brazell’
- Kendra Daylily: Hemerocallis ’Kendra’
- Kendra Jannell Daylily: Hemerocallis ’Kendra Jannell’
- Kenearly Tomato Lycopersicon Lycopersicum: Lycopersicon lycopersicum ’Kenearly’
- Kenesta Daylily: Hemerocallis ’Kenesta’
- Kenilworth Ivy: Cymbalaria muralis, Cymbalaria muralis ’Globosa’
- Kennebunkport Dewberry: Rubus harmonicus
- Kennedia: Kennedia coccinea
- Kennedy Buckwheat: Eriogonum kennedyi
- Kennedy’s Bentgrass: Agrostis tandilensis
- Kennedy’s Blackberry: Rubus kennedyanus
- Kennedy’s Buckwheat: Eriogonum kennedyi, Eriogonum kennedyi var. kennedyi
- Kennedy’s Hawthorn: Crataegus kennedyi
- Kennedy’s Milkvetch: Astragalus lentiginosus var. kennedyi
- Kennedys Bentgrass: Agrostis tandilensis
- Kennedys Buckwheat: Eriogonum kennedyi
- Kennedys Mariposa: Calochortus kennedyi
- Kennells Folly Daylily: Hemerocallis ’Kennell’s Folly’
- Kenneth Brazell Daylily: Hemerocallis ’Kenneth Brazell’
- Kenneth Cobb Daylily: Hemerocallis ’Kenneth Cobb’
- Kenneth Johnson Daylily: Hemerocallis ’Kenneth Johnson’
- Kenneth Juenger Daylily: Hemerocallis ’Kenneth Juenger’
- Kenneth Martin Junior Daylily: Hemerocallis ’Kenneth Martin Junior’
- Kennywood Park Daylily: Hemerocallis ’Kennywood Park’
- Keno Tomato Lycopersicon Lycopersicum: Lycopersicon lycopersicum ’Keno’
- Kens Choice Daylily: Hemerocallis ’Ken’s Choice’
- Kensington Daylily: Hemerocallis ’Kensington’
- Kensington Manor Daylily: Hemerocallis ’Kensington Manor’
- Kent Beauty Oregano: Origanum ’Kent Beauty’, Origanum rotundifolium ’Kent Beauty’
- Kent Cheerful Giver Daylily: Hemerocallis ’Kent Cheerful Giver’
- Kent Fever Daylily: Hemerocallis ’Kent Fever’
- Kent Ogden Daylily: Hemerocallis ’Kent Ogden’
- Kent Pride Tall Bearded Iris: Iris ’Kent Pride’
- Kent’s Favorite Two Daylily: Hemerocallis ’Kent’s Favorite Two’
- Kente Cloth Daylily: Hemerocallis ’Kente Cloth’
- Kentia Palm: Howea forsteriana
- Kentiopsis: Kentiopsis piersoniorum
- Kents Favorite Daylily: Hemerocallis ’Kent’s Favorite’
- Kentucky Bluegrass: Poa pratensis, Poa pratensis colpodea, Poa pratensis pratensis
- Kentucky Bluegrass Mix: Poa pratensis ’Scotts Pure Premium’
- Kentucky Bluegrass Standard Dwarf Bearded Iri: Iris ’Kentucky Bluegrass’
- Kentucky Coffee Tree: Gymnocladus dioica, Gymnocladus dioicus ’Espresso’
- Kentucky Coffeetree: Gymnocladus dioica
- Kentucky Derby Tall Bearded Iris: Iris ’Kentucky Derby’
- Kentucky Fescue: Lolium arundinaceum
- Kentucky Hills Daylily: Hemerocallis ’Kentucky Hills’
- Kentucky Hills Tall Bearded Iris: Iris ’Kentucky Hills’
- Kentucky Jazz Daylily: Hemerocallis ’Kentucky Jazz’
- Kentucky Lady’s Slipper: Cypripedium kentuckiense
- Kentucky Ladys Slipper: Cypripedium kentuckiense
- Kentucky Spleenwort: Asplenium kentuckiense
- Kentucky Starwort: Stellaria fontinalis
- Kentucky Sunrise Daylily: Hemerocallis ’Kentucky Sunrise’
- Kentucky Thoroughbred Daylily: Hemerocallis ’Kentucky Thoroughbred’
- Kentucky Viburnum: Viburnum molle
- Kentucky Woman Tall Bearded Iris: Iris ’Kentucky Woman’
- Kentucky Yellowwood: Cladrastis kentukea, Cladrastis lutea ’Rosea’
- Kenwood Marsh Checker-Mallow: Sphaeralcea ambigua rosacea
- Kenwood Marsh Checkerbloom: Sphaeralcea ambigua rosacea
- Kenya Burr Grass: Tragus heptaneuron
- Kenya Canna Lily: Canna x generalis’Kenya’
- Kenya Clover: Trifolium semipilosum
- Kenya Daylily: Hemerocallis ’Kenya’
- Kenya White Clover: Trifolium semipilosum
- Kenyan Shower: Cassia afrofistula
- Kenyatto Daylily: Hemerocallis ’Kenyatto’
- Keowee Daylily: Hemerocallis ’Keowee’
- Kepo: Cumulopuntia boliviana
- Ker-Gawl: Hedychium gardnerianum
- Kermes Shrub Oak: Quercus coccifera
- Kermesina Crapemyrtle: Lagerstroemia’Kermesina’
- Kermit Daylily: Hemerocallis ’Kermit’
- Kermit Intermediate Bearded Iri: Iris ’Kermit’
- Kern Buckwheat: Eriogonum kennedyi var. pinicola
- Kern Canyon False Goldenaster: Heterotheca shevockii
- Kern Cinquefoil: Potentilla wheeleri
- Kern County Evening-Primrose: Camissonia kernensis
- Kern County Larkspur: Delphinium purpusii
- Kern County Milkvetch: Astragalus subvestitus
- Kern County Suncup: Camissonia kernensis
- Kern Frasera: Frasera tubulosa
- Kern Larkspur: Delphinium hansenii kernense
- Kern Mallow: Eremalche parryi
- Kern Milkvetch: Astragalus lentiginosus var. kernensis
- Kern Plateau Horkelia: Horkelia tularensis
- Kern Plateau Milkvetch: Astragalus lentiginosus var. kernensis
- Kern Plateau Monardella: Monardella beneolens
- Kern River Clarkia: Clarkia exilis
- Kern River Daisy: Erigeron multiceps
- Kern River Evening-Primrose: Camissonia integrifolia
- Kern River Fairyfan: Clarkia exilis
- Kern River Fleabane: Erigeron multiceps
- Kern Suncup: Camissonia kernensis
- Kern Tarplant: Hemizonia pallida
- Kern Tarweed: Hemizonia pallida
- Kern’s Pitted Onion: Allium lacunosum var. kernense McNeal & Ownbey
- Kerner’s Dock: Rumex kerneri
- Kerner’s Mullein: Verbascum kerneri
- Kerosene Bush: Grevillea paniculata, Ozothamnus hookeri, Ozothamnus ledifolius, Ozothamnus rodwayi
- Kerplop Hosta: Hosta ’Kerplop’
- Kerplunk Hosta: Hosta ’Kerplunk’
- Kerr’s Milk-Vetch: Astragalus kerrii
- Kerr’s Milkvetch: Astragalus kerrii
- Kerrs Milkvetch: Astragalus kerrii
- Kerry Bryce Daylily: Hemerocallis ’Kerry Bryce’
- Kersting’s Groundnut: Macrotyloma geocarpum
- Kesselringii Black Stemmed Dogwood Cornus Alba: Cornus alba ’Kesselringii’
- Ketapang: Terminalia catappa
- Keteleer Juniper: Juniperus chinensis var. keteleeri
- Keteleeria: Keteleeria davidiana, Keteleeria evelyniana, Keteleeria fortunei
- Ketembilla: Dovyalis hebecarpa
- Kettle Falls Lupine: Lupinus minimus
- Kettle Gourd: Langenaria siceraria ’Kettle Gourd’
- Keurboom: Virgilia oroboides
- Kevan Scott Daylily: Hemerocallis ’Kevan Scott’
- Kevin Courville Daylily: Hemerocallis ’Kevin Courville’
- Kevin Kelley Hosta: Hosta ’Kevin Kelley’
- Kevin Kennon Daylily: Hemerocallis ’Kevin Kennon’
- Kevin Lee Daylily: Hemerocallis ’Kevin Lee’
- Kevin Mayo Daylily: Hemerocallis ’Kevin Mayo’
- Kevin Michael Coyne Daylily: Hemerocallis ’Kevin Michael Coyne’
- Kevin Vaughn Hosta: Hosta ’Kevin Vaughn’
- Kevin Volz Daylily: Hemerocallis ’Kevin Volz’
- Kevin’s Glow Canna Lily: Canna x generalis’Kevin’s Glow’
- Kevins Theme Tall Bearded Iris: Iris ’Kevin’s Theme’
- Kew Blue Bluebeard Caryopteris X Clandonensis: Caryopteris × clandonensis ’Kew Blue’
- Kew Broom: Cytisus × kewensis
- Kew Magnolia: Magnolia x kewensis’Wada’s Memory’
- Kew Red Spanish Lavender: Lavandula stoechas L. ’Kew Red’
- Kewanee Daylily: Hemerocallis ’Kewanee’
- Kewpie Doll Daylily: Hemerocallis ’Kewpie Doll’
- Key Byrsonima: Byrsonima lucida
- Key Flower: Dactylorhiza aristata
- Key Largo Hosta: Hosta ’Key Largo’
- Key Lime: Citrus aurantiifolia
- Key Lime Hosta: Hosta ’Key Lime’
- Key Lime Pie Daylily: Hemerocallis ’Key Lime Pie’
- Key Lime Pie Hosta: Hosta ’Key Lime Pie’
- Key Thatch Palm: Thrinax morrisii
- Key Thatchpalm: Thrinax morrisii
- Key Tree Cactus: Cereus robinii, Pilosocereus polygonus, Pilosocereus robinii, Pilosocereus robinii (Lem.) Byles and Rowley var. robinii (Lem.) Byles and Rowley
- Key Tree-Cactus: Pilosocereus robinii
- Key West Heliotrope: Heliotropium fruticosum
- Key West Hosta: Hosta ’Key West’
- Key West Nightshade: Solanum bahamense
- Key West Threeawn: Aristida floridana
- Key’s Sandmat: Chamaesyce porteriana
- Keyflower: Dactylorhiza aristata, Dactylorhiza aristata var. aristata
- Keygrass: Monanthochloe littoralis
- Keyhaven Standard Dwarf Bearded Iri: Iris ’Keyhaven’
- Keylime Canna Lily: Canna x generalis’Keylime’
- Keys To Heaven: Centranthus ruber, Centranthus ruber ’Alba’, Centranthus ruber ’Snowcloud’
- Keys Wire-Grass: Aristida floridana
- Keystate Hybrid Tomato Lycopersicon Lycopersicum: Lycopersicon lycopersicum ’Keystate Hybrid’
- Keystone 40 Tomato Lycopersicon Lycopersicum: Lycopersicon lycopersicum ’Keystone 40’
- Keystone Cop Daylily: Hemerocallis ’Keystone Cop’
- Keystone Daylily: Hemerocallis ’Keystone’
- Keystone Hawthorn: Crataegus tanuphylla
- Khair: Acacia catechu
- Khaki Weed: Alternanthera pungens
- Khakiweed: Alternanthera pungens
- Khan Daylily: Hemerocallis ’Khan’
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