Dr. Earth soils are a 100% natural and organic superior blend of rich composted materials including Fir bark fines and forest humus. Also added are Sphagnum peat moss for its moisture holding properties and perlite (in potting soil) to facilitate air circulation and good drainage. Dr. Earth soils are also enriched with earthworm castings, composted chicken manure, bat guano, kelp meal, seaweed extract, ecto and endo mycorrhizae and 7 strains of champion soil building microbes making its combined technology the most advanced soil available! Dr. Earth soils are complete and ready to use; they stimulate early root development, reduce transplant shock, increase transplant success and feed for months after planting. Contains Aloe Vera and Yucca extract ProMoisture Hydrate which keeps micro-organisms moist, protected, and alive, even when exposed to extreme hot and cold temperatures. ONLY Dr. Earth soils have ProMoisture Hydrate. Dr. Earth's Organic Premium Potting Soil is an all-purpose indoor and outdoor container potting mix. Ideal for hanging baskets, houseplants, and container plants. People and pet safe. Bag Size: 12 Quart.