Grow in sandy to average, well-drained soils in full sun. Tolerates some soil dryness, but prefers consistent moisture. Do not overwater, however. Deadhead spent flowers to encourage additional bloom. Winter hardy to USDA Zones 9-11. Grow as annuals in St. Louis, either in the ground or in containers. Prefers cool summer climates, and flowering may slow down considerably in hot and humid St. Louis summers. If growing from seed, start plants indoors in late winter (6-8 weeks before last frost date) and set plants outside after last frost date. Take basal offsets from favorite plants in late summer to early fall for rooting and subsequent overwintering indoors in pots. Container plants may also be brought inside for winter.
