Perennials: Kash - Kopp (100)
'Kashmir Purple' Clarke's Geranium
Kashmir Sage
'Kashmir White' Clarke's Geranium
'Kate' Diascia
'Katherine Lewis' Hosta
'Katherine' Summer Phlox
'Katie Pink' Mexican Petunia
'Kelsae Sweet Giant' Onion
'Kelwayi' Common Yarrow
'Kelwayi' Golden Marguerite
'Ken Aslet' Nasturtium
'Ken Clifford' Spiderwort: hybrid
Kencur
Kennedy's Buckwheat
Kentucky Blue Grass
'Kentucky Colonel' Spearmint
'Kew Rose' Tree Lavatera
'Kewensis' Primrose: hybrid
Keyflower (spp.)
Kiepersol
'Kiku-san' Yarrow: sibirica
'Kimberly Queen' Boston Fern
'Kimono' Alumroot: Heuchera
'Kimono' Foamy Bells
'Kim's Knee High' Purple Coneflower
'Kim's Mophead' Purple Coneflower
'Kindly Light' Daylily
'King Arthur' Sweet Corn
'King Creole' Louisiana Iris
'King Edward' Woolly Yarrow
'King Edward' Yarrow
'King George' Italian Aster
'King Klock' Daylily
'King of Kings' Bromeliad: hybrid
King Protea
'King Tut' Hosta
'King Tut®' Egyptian Paper Reed
King's Spear (spp.)
King's Spear 'Yellow Candles'
King's Spear: aitchisoniii
King's Spear: himalaicus
King's Spear: isabellinushybrid
King's Spear: robustus
King's Spear: tubergeniihybrid
'Kingston Cardinal' Hellebore
'Kingswood Gold' Jewels Of Opar
'Kinkaku' Ginger Lily
'Kinkaku' Hosta: montana
'Kinshi' Japanese Tree Peony
Kirengeshoma: palmata
'Kiss Yellow' Treasure Flower
'Kiwi Fern' Coleus: hybrid
'Klaus Jelitto' Stokes' Aster
'Kleine Siberspinne' Maiden Grass
'Klondyke Mix' Gazania: Gazania
Knapweed, Greater
Knapweed, John Coutts 'John Coutts'
Knapweed, Ornamental
Knapweed: uniflora nervosa, Ornamental
Knautia (spp.)
Knautia 'Jesse'
'Kneiffii' Goat's Beard
Knight's Star Lily 'Ruby Meyer'
Knight's Star Lily 'Safari'
'Knightshayes' Willow Gentian
'Kniola's Black' Morning Glory: tricolor
Knotted Cranesbill
Knotted Marjoram 'Compactum'
Knotted Marjoram 'Sicillian'
Knotweed (spp.)
Knotweed 'Border Jewel'
Knotweed, Chinese
Knotweed, Climbing
Knotweed, Flowery
Knotweed, Japanese (spp.)
Knotweed, Japanese 'Compactum'
Knotweed, Japanese 'Crimson Beauty'
Knotweed, Japanese Variegated
Knotweed, Lesser
Knotweed: amplexicaule (spp.)
Knotweed: amplexicaule 'Atrosanguineum'
Knotweed: amplexicaule 'Speciosa (Firetail)'
Knotweed: amplexicaule 'Taurus'
Knotweed: capitatum
Knotweed: emodi
Knotweed: polymorphum
Knotweed: virginianum (spp.)
Knotweed: virginianum 'Compton's Form'
Knotweed: virginianum 'Lance Corporal'
Knotweed: virginianum Variegated
Knotweed: weyrichii
'Kobold' Spiked Blazing Star
Koeleria Grass
'Kohaku' Hybrid Toad Lily
Kokerboom Aloe
'Kong Rose' Coleus
'Konigin Charlotte' Hybrid Windflower
'Konjac' Devil's Tongue
'Kooriyama' Hosta: opipara
'Kopper King' Mallow