Jonathan Green 17 lb. 10-0-1 Organic Lawn Food. It is a complex all organic lawn fertilizer that provides excellent turf nutrition for 8-10 weeks. It helps to rejuvenate tired, sick lawns with a slow, gentle feeding promoting a healthy, thick, dark green turf over time. It covers 5000 Sq.Ft. and is suitable for all grasses. It contains iron for deep greening and is great for establishing new seedlings. Apply the same day as seeding or sodding. Spread this product a day or two after mowing and when the lawn is dry. Use a rotary or drop lawn spreader. Best time to apply is spring, summer or fall depending on region. Children and pet friendly - can use immediately after spreading.