Milorganite All-Purpose Slow-Release Nitrogen 6-4-0 Fertilizer, 32 Pound Bag

Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. 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.

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