Timing and method of application, weather and crop conditions, mixture with other chemicals not specif cally recommended and other infuencing factors in the use of this product are beyond the control of the manufacturer. Buyer assumes all risks of use storage and handling of this product. DIRECTION FOR USE A soil test is the best way to determine your gardens need for Aluminum Sulfate. A pH above 7.0 indicates alklinity The chart below indicates the amount of this product needed to lower soil pH to 5.0 a suitable pH for many garden plants that thrive in acidic environments. Do not exceed the recommended amount of this product. The chart mention on bottle approximates the amount of Aluminum sulfate needed to lower soil pH to 5.0 a suitable pH for many plantsGardens: In established Aluminum sulfate is best if used in early spring. To help intnsify the blue blossoms of hydrangeas, apply Aluminum sulfate lightly around the plant, work into the soil if possible and water thoroughly.Trees & Shrubs: Apply 30 g of Aluminum Sulfate per inch of diameter or per 3ft of height around the drip line of the plant avoiding contact with the plant itself. water thoroughly.