HyR BRIX Phosphorus-Free Lawn Fertilizer keeps your lawn healthy, dense, and green, season after season. It provides an ideal balance of micro-nutrients and slow-release nitrogen. This balance maximizes your turf's nutrient absorption. For best results, apply in spring or fall. Evenly apply 11 pounds of HyR BRIX per 1,000 square feet of lawn. One 45-pound bag covers about 4,500 square feet. Refer to your spreader manual to determine your correct application rates. A single feeding of HyR BRIX lasts all season long. This fertilizer also improves soil biology, resulting in a dense lawn that naturally fights weeds. This formula contains nitrogen (20%), potassium (8%), calcium (5.63%), and sulfur (12.12%). Sold in 45-pound bags.