'Kobold' Spiked Blazing Star Koeleria Grass
'Kohaku' Hybrid Toad Lily Kokerboom Aloe
'Kong Rose' Coleus 'Kooriyama' Hosta: opipara
'Kopper King' Mallow Korean Angelica
Korean Bellflower Korean Chrysanthemum 'Clara Curtis'
Korean Mint 'Golden Jubilee' Korean Tassel Fern (spp.)
Korean Tassel Fern Variegated 'Kozuhara' Flamingo Flower
Kralalwyn Aloe 'Krossa Regal' Hosta
'Krugerand' Tall Bearded German Iris Kuma Bambaoo Grass
Kuro-Chiku (spp.) 'Kurt's Variegated' Hybrid Geranium
'Kwanso' Double Daylily Kweek 'Austrailia'
Kweek 'Santa Ana' 'KY31' Tall Fescue
'Kyoto' Vase Plant Kyushu Meadow Rue
'La Fresco' Cardinal Flower Labrador Violet
Lace Cactus Lace Fern
Lace-leaf Sundew Lachenalia
Lachenalia: orthopetala Lachenalia: pallida
'Lacquer Leaf' Foamflower: Tiarella Ladder Fern (spp.)
Ladder Fern 'Bostoniensis' Ladder Fern 'Crispa'
Ladder Fern 'Dallas' Ladder Fern 'Fluffy Ruffles'
Ladder Fern Golden Ladder Fern 'Kimberly Queen'
Ladder Fern 'Portor's Rossevelt' Ladder Fern: spicant
Ladies Delight (spp.) Ladies Delight 'Bingo Blue Frost'
Ladies Delight 'Crown Golden' Ladies Delight 'Fancy Dark-Eyed Blue'
Ladies Delight 'Fancy Dark-Eyed Red' Ladies Delight 'Fancy Dark-Eyed Yellow'
Ladies Delight 'Fancy Golden Yellow' Ladies Delight 'Fancy Purple & White'
Ladies Delight 'Joker® Rot-Gold' Ladies Delight 'Jolly Joker®'
Ladies Delight 'Universal Orange Plus' 'Lady Elizabeth™' Daylily
'Lady Fair' Daylily Lady Fern (spp.)
Lady Fern 'Veronica-Cristata' Lady Fern: dilatatum
'Lady Georgia' Daylily 'Lady in Black' Calico Aster
'Lady in Blue' Bushy Aster 'Lady Jane' Anthurium
Lady of the Night Lady Tulip
Lady Tulip: clusiana chrysantha Ladybells
Ladybells, Lilyleaf Ladybells: stricta
Ladyfinger Cactus Lady's Fingers
Lady's Leek Lady's Mantle (spp.)
Lady's Mantle 'Thriller' Lady's Mantle, Alpine
Lady's Mantle, Dwarf Lady's Mantle, Mountain
Lady's Mantle, Red-stemmed Lady's Mantle, Silver
Lady's Mantle: xanthochlora Lady's Slipper 'Agincourt'
Lady's Slipper, Pink Lady's Slipper, Showy
Lady's Slipper, Yellow Lady's Tresses, Nodding
Ladyslipper Orchid 'Lakeside Cha Cha' Hosta
Lamb's Ears (spp.) Lamb's Ears 'Big Ears'
Lamb's Ears 'Helen von Stein' Lamb's Ears: byzantinum
Lambstongue Trout Lily