Rule of Thumb—Species in this genus are easily grown in full sun or light shade in the ground or deep containers planted in late fall, kept moist during active growth with watering reduced as leaves wither and watering stopped during dormancy. In areas with heavy frost they should be well mulched. They can tolerate a bit of summer water, but the combination of moisture and high soil temperatures can cause them to rot. They need protection from deer, squirrels, mice, and gophers.