C-I-L BIOMAx Mushroom Compost is a by-product from mushroom farming that improves aeration and water retention in the soil. It is a naturally weed-free, non-burning alternative to compost that helps improve soil structure and texture, soil aeration to increase the roots ability to absorb nutrients and oxygen.  It helps to retain moisture to reduce the risk of plant dehydration.  A great product for shrubs, trees, lawns and gardens.