Easily grown in loose, medium moisture, well-drained soils in full sun to part shade. Best flower production is in full sun. Tolerates average to poor garden soils. Moderate drought tolerance once established. Shrubs are vegetatively winter hardy to USDA Zones 5-8, but may not always flower well in Zone 5 because of harsh winter temperatures or late winter freezes of unopened flowers. Flower buds are typically lost when winter temperatures fall below -5°F.