Oyster Shell Flour is a high-quality soil conditioner that consists of 96% calcium carbonate and many micronutrients, Oyster Shell Flour provides a long-lasting, steady release of nutrients to help regulate pH levels, improves fertilizer uptake, promotes healthy cellular structure and enhances soil tilth. Oyster Shell is also helpful in creating more active habitats for soil microbes in compost piles and worm bins.
For soil building or top dressing, apply at a rate of 1 cup per cubic foot of soil.
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