Hi-Yield Ammonium Sulphate
Product ID: 8006918
The Ammonium Sulphate Fertilizer by Hi-yield is a 21-0-0 formulation, and it comes in a 4 pound bag. This high nitrogen formula is fast acting, providing rapid growth and greening to all plant types. Adding sulphur to your soil also raises the acidity, which is often beneficial to flowering plants. Typical application is 3/4 pound per 100 square feet.