The Old Farmer's Almanac Lawn Food is an innovative, natural, plant-based fertilizer that promotes a lush, green lawn without harsh chemicals, offensive odors, manure or bio-solids. Suitable for a wide variety of grasses in all geographic areas, nutrient rich 10-0-2 Lawn Food works with your soil to promote a strong root system, encourage thick turf growth that crowds out new weeds, and protect against potential future problems. The Old Farmer's Almanac Lawn Food's slow release formula provides vital, long-lasting nutrition without burning your lawn. Each 20 lb bag (approximately 1100 Cubic Inches) covers up to 5000 square feet and will feed for 6-8 weeks between applications.