Garden Sulfur is a valuable nutrient that can lower soil pH, help improve soil characteristics, and enhance plant nutrient availability. Oyster Shell, DTE Lime, Dolomite Lime, & Gypsum will supply calcium, an essential nutrient required for proper plant growth. Azomite is a popular product because it contains a broad spectrum of trace minerals and can help to improve plant and root system growth, crop yields, and quality as well as re-mineralize nutrient depleted soils.