Easily grown in average, medium, well-drained soils in full sun to part shade. Prefers rich, sandy loams. Tolerant of some drought. Mulch roots in winter. Top growth is not reliably winter hardy in zone 5, where plants may suffer tip dieback or die entirely to the ground in harsh winters. When plants die to the ground in winter, the roots often survive and send up new shoots in spring. Flowers bloom on new wood, so winter damage will not adversely affect flowering.