50 YELLOW COLUMBINE Aquilegia Flower Seeds BLOOM TIME: Spring HARDINESS ZONE: 3 - 9 (and reseeds itself easily) PLANT HEIGHT: 18 - 30" . . . PLANT SPACING: 12 - 18" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average Columbines make excellent cut flowers and attract bees, butterflies, & birds including HUMMINGBIRDS.