Little care needed. Keep moist until established. Fertilize annually. You can remove spent flower stalks to freshen appearance, but the gentle self seeding of Columbine is usually welcome, so wait until seeds have dropped. Foliage may melt away in hot summers, only to return in the fall. If Leaf Miners appear, leaving trails of white inside the leaves, Neem oil is a safe, organic way to discourage them. Occasionally a rebloom can happen in the fall if conditions are right.