 | Hi-Yield Aluminum Sulfate. Formulation: Aluminum Sulfate Helps create an acid soil condition for plants, such as Azaleas, Gardenias, Camellias, Rhododendrons, Blueberries, and others Intensifies blue color in Hydrangeas Application rate: Shrubs: 1 lb. per 3 ft. of height Trees: 1 lb. per inch of diameter To correct alkaline soil: 5 lb. per 100 sq. ft.... - Hi-Yield Aluminum Sulfate. |