This unique potting soil combines the best fertilizers found on land with the finest sea ingredients available. The result is a rich, light, organic potting soil, ready to use right from the bag, that encourages healthy root growth, disease resistance and leafy foliage. Consists of rich composted forest humus, sphagnum peat for aeration, bat guano, fish, crab, shrimp and Norwegian kelp meals – and of course, Fox Farm's premium earthworm castings. There are even some oyster shells mixed in to ensure a balanced pH. For planting in containers both indoors and out, tilling into gardens, filling raised beds or top dressing established plants. 1.5 cubic feet.