Milorganite Pro 6-4-0 is derived from granular fertilizer composed of organic matter, expertly processed to ensure a slow-release and consistent nutrient supply that delivers sustained nourishment for up to 10 weeks. Derived from recycled organic bio-solid matter processed by microbes. Non-burning, low-salt, safe for lawns, flowers, shrubs, and vegetables. Milorganite Pro has an expertly balanced formula of 6% nitrogen, 4% phosphorus, and 0% potassium, this product is tailored to fuel robust growth, root development, and enhanced resilience in your plants.