Does Columbine need sun or shade?
Also question is, can Columbine grow in shade?
Columbine plants aren't too particular about soil as long it's well-draining and not too dry. While they enjoy full sun in most areas, they don't like it very hot, especially during summer. Therefore, in warmer areas like the south, grow them in partial shade and give them plenty of mulch to help keep the soil moist.
Beside above, do Columbines bloom all summer?
Columbine (also known as Granny's bonnet) is known for its distinctive, bell-shaped, spurred flowers, which bloom from mid-spring to early summer. Though individual plants are short-lived, lasting only two to three years, columbine self-seeds prolifically and will persist in the garden with volunteer seedlings.
Deadheading and Pruning Your Columbine This may result in a garden that grows out of control if the buds are not deadheaded, but it also adds to the new growth the garden needs after a few years. When the flower starts to fade and droop, it's no longer attractive in the garden, and this is the time to deadhead.