all products All Products » Ornamental & Vegetable Soil Amendments » Ornamentals and FlowersAluminum Sulphate Use with Hydrangea to alter bloom color Application Rate Quantities Available 1 lb/3 ft of height 5 lb bag All Products » Ornamental & Vegetable Soil Amendments » Ornamentals and FlowersAluminum Sulphate Use with Hydrangea to alter bloom color Application Rate Quantities Available 1 lb/3 ft of height 5 lb bag