High quality soil conditioner derived from the crushed shells of oysters which provides immediate and long term release of nutrients that control pH levels. Natural, organic source of calcium is used to correct Calcium deficiencies and raise pH in acidic soils. This product provides a steady release of calcium while improving fertilizer uptake and soil tilth. Oyster Shell is also helpful in creating more active habitats for soil microbes in compost piles and worm bins.

• Contains 96% calcium carbonate plus a natural balance of 10 other nutrients and micronutrients.
• Variable particle size provides both immediate and long-term fertilization.