Jonathan Green Winter Survival Fall Lawn Fertilizer, 45 pound Bag, covers 15000 square foot. This 10-0-20 fertilizer is ideal for winter turf protection and keeps the lawn greener later into the year. It provides a well-balanced formula suitable for all grasses. The iron and sulfur content helps maintain a deep green color. It is ideal to use with fall seeding. This post-emergent fertilizer is safe for Bermuda grass and can be applied during the fall season. It comes in a bagged packaging.