1.5 cu. ft. bag A powerful blend of Pacific Northwest sea-going fish, crab meal, shrimp meal, and plenty of our own earthworm castings, Ocean Forest Potting Soil is nature's finest soil amendment. It is ideal for greenhouse applications, as well as indoor/outdoor plantings. Fox Farm has added composted forest humus and selected peat mosses to create the optimum organic medium for a versatile planting environment. Ocean Forest Potting Soil contains earthworm castings, bat guano, and micronutrients. It is light in texture and well aerated...a premium blend of good things from the earth and the sea.