Additional Details ------------------------------ Product description: Each bag delivers primary nutrients Nitrogen and Phosphorus to plants as well as important micro-nutrients that they need to develop. Milorganite is made from microbes that eat the organic material found in wastewater, die when they have nothing else to eat, and are heat-dried in dryers that operate at 900-1200 degrees Fahrenheit. There?s no immediate, excessive release of nutrients after fertilizing, which causes a flush of growth. This slow-release formula results in uniform growth and a well-established root system. Milorganite has no expiration date. It will work indefinitely if stored properly in a cool and dry area out of the reach of children and animals. Directions: Apply Milorganite fertilizer at a rate of approximately 50 lbs. per 8,000 square feet. This slow-release formula does not require watering in and will deliver primary nutrients, including nitrogen and phosphorus, to plants for up to 10 weeks after application. The fertilizer is non-burning and will not scorch or stripe your lawn, even in hot temperatures and dry conditions. It is ideal for lawns, trees, shrubs, flower and vegetable gardens, seeding, and sodding. The slow-release nitrogen formula provides nutrition over an 8-12 week period, promoting root growth and reducing mowing, while enriching the soil with important micro-nutrients.