Espoma Organic Land & Sea Gourmet Compost is a special blend of the finest ingredients available. It combines peat and humus from the land and crab & lobster shells from the sea to create a high quality finished compost.This product is regionally formulated from 35-45% aged forest products, Canadian sphagnum peat moss, aged humus, and limestone to adjust pH. In New Hampshire this product contains aged forest products, Canadian sphagnum peat moss, aged humus, and limestone to adjust pH.