Oyster Shell ^Sale

Oyster shell is a great neutralizing agent, pest deterrent, and source of calcium for your garden. 

If you have acidic soil, the calcium carbonate in oyster shell works to raise the pH of your soil, just like limestone. Calcium is also an essential plant nutrient, so oyster shell can prevent calcium deficiency in your plants. On top of this, the small shards of oyster shell can deter slugs, snails, and small burrowing animals from your garden.