Grows best in Full Sun • Cold hardy to zone 4 (-34°C/- 30°F)Mature height x width: 4-6' x 4-6'; Rounded Small, blue tinged leaves contrast beautifully with scores of pure white flowers in late spring. A profuse bloomer on previous year's wood, so prune right after flowering has finished. Will do well in average garden soils. Blooms in Summer • Flowers are White