Southern Ag Black Snake Sulfur is used to lower soil pH in areas where an acidic soil is desired. Mix 1-2 pounds per 100 square feet. This product works well for plants that like acidic soil, such as azaleas, hydrangeas, and blueberries to improve overall color and health. It helps plants improve water absorption and utilization and promotes disease resistance. Black Snake Sulfur can be used on lawns to establish an acid soil condition and correct soil alkalinity.