E.B.Stone Organics Edna’s Best Potting Soil is a special blend of the finest 100% natural and organic ingredients formulated to make a superior mix for container gardens. It is ready to use right out of the bag in any size pot from starter pots to larger containers. We’ve created a potting soil with excellent moisture retention and air-filled pore space encouraging root growth. It is a fir-based mix which lasts much longer then peat moss based potting soils. We also use pumice for drainage which stays down in the soil and will not float on the surface like perlite. Contains aged fir bark, aged redwood, sphagnum peat moss, pumice, earthworm castings, sand, feather meal, bat guano, alfalfa meal, kelp meal, and mycorrhizae. Oyster shell lime and dolomite lime as pH adjusters. A natural wetting agent has been added to help re-moisten the product.