Spiraea douglasii Plant Data Family Name: Rosaceae Common Name: hardhack Other Name(s): Spiraea douglasii Hardiness Zones: Zone 5: (-29 to -23 C) Plant Code: spdo Fruit Color: Brown, Flowering Time: Jun, Jul, Flowering Color: Pink, Purple, Leaf Form: Simple, Leaf Arrangement: Alternate, Leaf Shape: Oblong, PlantSomething BC Wholesale Listings No members have selected this plant.