From the ArcaMax Publishing, Gardening Newsletter:
http://www.arcamax.com/news/gardening/s-160628-257300
Plant type: Shrub
USDA Hardiness Zones: 4a to 7a
Height: 48" to 96"
Spread: 48" to 96"
Exposure: partial shade partial sun
Bloom Color: Lavender, Pink
Bloom Time: Early summer, Late spring, Mid spring
Leaf Color: Green
Growth Rate: slow
Moisture: moist
Soil Condition: Acidic, Loamy, Sandy, Well drained
Form: Rounded
Landscape Uses:
Border, Massing, Specimen, Woodland garden
Special Features:
Blooms are very showy