Best grown in loose, medium moisture, well-drained soils in full sun. Plant in sheltered locations north of USDA Zone 7. In USDA Zones 5 and 6, this shrub often suffers winter dieback or dies to the ground. It is not considered reliably winter hardy throughout USDA Zone 5. Pruning after the first flowers fade stimulates new growth making possible a second flush of blossoms in late-summer or early-fall.