This tough perennial produces spikes of white or blue blooms in early and midsummer. Like most cottage garden plants, the flowers are great for cutting.
Name: Campanula percisifolia
Growing conditions: Full sun or part shade and well-drained soil
Height: To 3 feet tall
Zones: 3-8, depending on variety
Easy to grow and beautiful, columbine blooms in spring and early summer. The colorful blooms are loved by hummingbirds and gardeners alike.