McKana Giant Hybrid Columbine Seeds - A Favorite Perennial Wildflower McKana Giant Columbine Mix .1 Oz - 2500 Seeds Favorite Wildflower up to 32" Tall Spring Perennial Wildflower. Grows in Zones 3-9 in the U.S. Non GMO and Neonicotinoid Seed Marde Ross & Company specializes in flowering bulbs and peonies and has been a licensed California Nursery since 1985