Enjoy months of big, bold blooms as they cover this attractive shrub throughout the entire summer. Large 4–6" flower heads appear on both old and new wood, and display a lovely pink shade in alkaline soil, blue in acidic soil. The compact plant is hardy, blooming in late summer even if a late frost kills off the buds. Excellent for use in small gardens and containers. For best results, plant in moist, well-drained soil.