Hydrangea, Azure Skies™ HydrangeaAzure Skies Hydrangea is a reblooming deciduous shrub with a rounded habit and rich green leaves that turn yellow in fall. The mophead flower clusters bloom on both old and new wood, with color that depends on the soil PH acidic soils produce the signature bright blue while alkaline soils produce pink. The flowers attract pollinators. Best bloom in partial sun and rich, moist well drained soils. Type: Shrub Origins: East Asia Height: 5' 6' Spread: 5'