Milorganite slow-release nitrogen fertilizer is one of the oldest branded fertilizers on the market today, with over 90 years of providing an environmentally-friendly alternative to synthetic fertilizer. Milorganite remains inspired by our mission to improve the environment by creating a low impact formulation that recycles valuable nutrients. Milorganite fertilizer is derived from heat-dried microorganisms, which feed on the nutrient-rich wastewater from local businesses such as MillerCoors. The Milorganite program is one of the nation's largest recycling efforts. Headquartered in Milwaukee, Wisconsin, Milorganite products are manufactured and marketed by the Milwaukee Metropolitan Sewerage District (MMSD), a regional government agency that provides water reclamation and flood management services for about 1.1 million customers in 28 communities in the Greater Milwaukee Area. Milorganite promotes healthy growth of lawns, trees, shrubs, flowers, and vegetables. Milorganite contains slow-release nitrogen which helps produce thick, green lawns without excessive top growth. Milorganite is fortified with 2.5% iron for enhanced greening. The non-burning formula doesn't contain any salts and doesnt have to be watered-in. It stays in the soil ready to work when moisture comes later. Eco-friendly Milorganite is USDA Bio-Preferred certified containing 85% organic matter.