Black Gold 1390302 16 QT U 16 Quart Earthworm Castings Blend: * Earthworm castings * Listed by the Organic Materials Review institute (OMRI) for the production of organic food and fiber * Excellent for use as a top dressing, diluted to make a rich liquid "tea" or mixed with soil to stimulate plant growth * Improves soil structure and increases microbial activity in a way that outperforms most commercial fertilizers * Minerals and nutrients from earthworm castings are in a water soluble form, readily available to plants * Contains earthworm castings, and Canadian sphagnum peat moss * Western region only * 16 quart