COLUMBINE MCKANA MIX BLUE/YELLOW/PINK/RED/MAROON McKana Giant Columbine Seeds grow beautiful blooms in radiant hues of red, white, yellow and purple. Our McKana Giant Columbine Seed Mix will liven up any garden, meadow or flowerbed; plus, they make a lovely bouquet! McKana Giant Columbines stand 2 to 3 feet high and produce buttercup shaped flowers that are 3 to 4 inches across. Elite gardeners chose McKana Giants! Columbines are a highly adaptable flower. They do well in many climates and sun conditions, but they will bloom best in full sun to light shade. Plus, columbines are deer resistant, and birds and butterflies love the nectar found in tip of the petal’s thin spur! For best results, put columbine seeds in the refrigerator for 24 hours prior to planting. Another, slightly more intensive way to stratify (a process of breaking seeds’ dormancy by subjecting them to moist/cold treatments) your seeds is to first, sow them into a container filled with moist soil. Next, place the container in a plastic bag and refrigerate or freeze it for 3 weeks. Finally, remove the seeds, and place them outdoors in a sunny location or under grow lights and allow them to germinate (21 to 28 days). If sowing outdoors: In the early spring (3 to 4 weeks before the last frost), sow your columbine seeds on top of lightly raked soil. They do not need to be covered. Your columbine seeds will germinate in around 21 days. If starting indoors, plant columbine seeds 6 weeks before the average last spring frost. Columbines are perennials that are hardy to zones 3 to 8 or 9, depending on variety.