Wormganix Worm castings is the manure created naturally by earthworms. This extraordinary soil is scientifically proven to have incredible benefits such as increased plant growth, soil aeration, moisture retention, natural pest resistance and protection from disease. Wormganix Worm castings are produced in the UK, 100% Organic, the worms are fed on high quality composted bark, with nothing being added at any point in the process. The worms then produce a rich earthly matter, commonly referred to as Humus or Vermicompost. The castings are then sieved twice to ensure the finest quality worm castings on the market, proven by its light, neutral earthy odour, and dark fluffy appearance Wormganix Worm castings is a Living product.