Easy as Organic Living Soil 25L How it works Living soil Peat, compost, worm castings and biochar create optimal soil structure, rich with humus and packed with beneficial soil life with excellent nutrient and water holding properties. Nutrient dense Organic nutritional amendments are held in soil and converted to plant available form by microbes as needed throughout the crop life-cycle. Optimal soil structure Lightweight scoria provides aeration to the rhizosphere. Roots require oxygen for sugar production to grow and feed soil biology. In exchange, microbes convert nutrients to plant available form. Premium organic amendments Amendments contain a full spectrum of macro nutrients, trace elements, pest and disease resisting compounds and many natural growth promoting hormones.