Succeeds in an ordinary medium soil in sun or shade. Requires a moist soil. Prefers a well-drained soil. Dormant plants are hardy to about -25°c. This species is a biennial or short-lived perennial. Some named forms have been selected for their ornamental value. Members of this genus are rarely if ever troubled by browsing deer.

None known

Seed - sow April in a greenhouse. Only just cover the seed. Germination should take place within 2 weeks, prick out the seedlings into individual pots when they are large enough to handle and plant them out in the summer. The seed can also be sown in situ.

Disturbed soils in Texas.