Gro-Power Inc. has been manufacturing Humus based fertilizer/soil conditioner products since 1966. All of our basic products contain true plant-based (below fibrous stage) Humus Humic Acids and benficial soil bacteria. Gro-Power is designed to increase the soils fertility by adding high quality organic matter (Humus) and beneficial soil micro-organisms back into the soil. Gro-Power products are odor free environmentally safe and free of waste products such as animal waste poultry litter sewage sludge or toxic mine tailings. All products contain non-staining Iron Manganese Zinc.