Biobizz Worm·HumusWorm humus, also known as vermicast, is the final product of decomposed material excreted by the king of the soil the earthworm. This high quality organic compost is made from 100% pure, organic worm castings that have been stringently lab tested to ensure they dont contain any farmyard waste, landfill waste or compost. Packed with water soluble nutrients and bacteria, our WormHumus is a very nutritious organic fertilizer and excellent all round soil