'Just Joey' Rose Kaempfer Azalea
'Kagero' Japanese Maple Kaka Beak
'Kaleidoscope' Glossy Abelia 'Kaleidoscope™' Rose
Kalm St. Johnswort 'Ames' Kalm St. Johnswort 'Blues Festival™'
'Kandy Kitchen' Japanese Maple Karapincha
'Karasu gawa' Japanese Maple 'Kardinal' Bigleaf Hydrangea
Karoo Cycad 'Kasen nishiki' Japanese Maple
Kashmir False Spirea 'Kasia (Sunjoy® Mini Saffron)' Japanese Barberry
'Kate Arendall' Evergreen Azalea 'Katherine Dykes' Shrubby Cinquefoil
'Katherine Havemeyer' Common Lilac 'Katsura' Japanese Maple
'Keepsake' Mountain Laurel Kei Cycad
'Kelleriis' Japanese Barberry 'Kelseys Gold' Red Osier Dogwood
'Kembu' False Holly 'Ken Taylor' Flannel Bush
'Ken Taylor' Rosemary 'Kentish Belle' Flowering Maple
Kerria, Japanese (spp.) Kerria, Japanese 'Albaflora'
Kerria, Japanese 'Aureovitla' Kerria, Japanese 'Golden Guinea'
Kerria, Japanese 'Picta' Kerria, Japanese 'Shannon'
'Kesselringii' White Dogwood 'Kew Blue' Blue Mist Spirea
'Kew Green' Skimmia 'King Edward VII' Red Flowering Currant
'King George' Rhododendron 'King Rose' Magnolia
King Sago Palm King's Crown
King's Mantle 'Kinlochruei' Scotch Heather
Kinnikinick 'Point Reyes' Kinnikinick 'Radiant'
Kirk's Kohuhu 'Kiwi' New Zealand Tea Tree
'Kiyo sumi' Japanese Maple 'Kiyohime' Japanese Maple
'Kiyosumi' Sawtooth Hydrangea 'Kleims Hardy' Gardenia
Knife Acacia Knifeleaf Wattle
'Knock Out®' Rose 'Knowles Ryerson' Ceanothus: hybrid
'Kobold' Japanese Barberry Koehne Holly 'Wirt L.Winn'
Kohuhu 'Irene Paterson' Kohuhu, Kirk's
'Kokyo' Japanese Maple Kolkol
'Kolmbeau (Mystical™ Beauty)' St. Johnswort: Hypericum 'Komachi hime' Japanese Maple
Korean Abelialeaf Korean Arborvitae
Korean Azalea 'Compacta' Korean Barberry
Korean Early Lilac (spp.) Korean Early Lilac 'Cheyenne'
'Korean Gold' Japanese Plum Yew Korean Greenstem Forsythia 'Bandel'
Korean Greenstem Forsythia 'Kumsun' Korean Greenstem Forsythia 'Seoul Gold'
Korean Greenstem Forsythia 'Suwan Gold' Korean Lilac 'Miss Kim'
Korean Littleleaf Boxwood (spp.) Korean Littleleaf Boxwood 'Wedding Ring®'
Korean Mountain Magnolia Korean Spirea (spp.)
Korean Spirea 'Pink Parasols®' Korean Sweetheart Tree
Koreanspice Viburnum (spp.) Koreanspice Viburnum 'Aurora'
Koreanspice Viburnum 'Compactum' Koreanspice Viburnum 'SMVCB (Spice Baby™)'
Koreanspice Viburnum 'Spiro (Spice Girl®)' Koreanspice Viburnum Variegated
'Koshibori nishiki' Japanese Maple 'Kosteri' Hinoki False Cypress
'Koto maru' Japanese Maple 'Kotohime' Japanese Maple
'Kramer's Supreme™' Japanese Camellia Kruse's Mallee
Kumquat, Oval 'Kumsun' Korean Greenstem Forsythia
Kunzea, Scarlet Kuro-Chiku 'Boryana'