These small joyful flowers are known for their upturned cup shape. They are commonly seen in shades of purple and white which contrast beautifully with their darker green leaves. Bell flowers are a hummingbird attractant, and begin blooming in early summer continuing into the fall. They like average moisture, but can handle short periods of drought once established depending on variety. Cold hardiness make them a reliable choice for your garden. Grow in full sun to part shade. Year after year, they begin to spread, making a magical bed, container filler, as well as a perfect cut flower for your household vases.