Southern Ag Sulfate of Potash 0-0-50 (5 Pound Bag) Strengthens turfgrass and ornamental plants, making them less susceptible to disease & adverse conditions such as winter Corrects Potassium deficiency in turfgrass, woody ornamental plants, vegetable plants, flowers. CONTAINS: Granular Grade Potassium Sulfate. Not for spraying. USE ON: Vegetables, flowers, shrubs and lawns. FOR: Use in potassium low soils. Helps plants form healthier, stronger roots, stems, and tubers