5lb Calcium Carbonate Fertilizer | Oyster Shell Powder | All Natural Fertilizer | 35% Calcium

This five-pound bag of oyster shell powder delivers calcium carbonate to support healthy plant development across your garden. Made from crushed oyster shells, it's a natural source of calcium that helps prevent common issues like blossom end rot in tomatoes while improving soil structure and pH balance. Whether you're growing vegetables, fruits, or flowers, this all-natural fertilizer works to nourish stronger, more vibrant plants.