Hi-Yield Ammonium Sulfate, NPK 21-0-0, 4 lb

Ammonium Sulfate is great source of Nitrogen with the acidifying addition of Sulfur. Use on Alkaline soils and soils with higher pH. Use on Trees, Shrubs, Flowers and Vegetables. Use on Lawns for a quick, long lasting green. This is the preferred fertilizer of Blueberries, providing the form of Nitrogen that they can use.