Espoma Soil Acidifier 6 lbs bag
This soil acidifier is an all natural, high purity mineral that can be used both as a plant food to provide the nutrient sulfur and as a soil amendment to correct the problem of alkaline soil. This all natural soil acidifier turns hydrangeas blue. Lowers the pH of soils and allows acid loving plants to achieve optimum growth. Long lasting and highly effective. Safe, nontoxic and safer than aluminum sulfate. Can be used for organic gardening. Comes in 6-pound bag.