Milorganite 0636 Organic Nitrogen Fertilizer, 36-Pound An organic nitrogen fertilizer composed primarily of heat dried microbes It is an all-purpose fertilizer used on lawns, shrubs, trees, flowers, vegetables, golf courses and as a seed carrier It contains 4 percent non-staining iron for deep greening Can be applied any time during the growing season and is suitable for any climate Children and pets can safely go onto areas that have been fertilized with Milorganite