Rocky Mountain Columbine Seed Balls for Fall Planting - Bulk Seed Balls for Seed Bombing (Aquilegia caerulea) (20) Delicately poised Blue and White Flowers in the Sping Custom seed ball recipe engineered by a soil scientist. A bee, butterfly, and hummingbird favorite! Best planted in Fall or Winter. Non-GMO. Pesticide free. Protects seeds from foraging and displacement.