Kidneywood
Knife Acacia, Knife Blade Acacia
Krauter Vesuvius Flowering Plum
La Jolla Bougainvillea
Lady Banks' Rose
Lamb's Ears
Langman's Sage
Lantana
Large-flowered Blue Star
Large-spine Agave
Lavender Cotton
Leadplant Amorpha
Leather-Leaf Acacia
Lechuguilla
Lemon Bottlebrush
Leucophyllum Houdini
Leucophyllum Sierra Bouquet
Leyland Cypress
Licorice Mint
Likiang Cotoneaster