Covers up to 15,000 square feet. Great for fescue, Kentucky bluegrass, centipede, zoysia, bermuda, perennial ryegrass, St. Augustine and bahia lawns. Greens 3x longer. Controls over 200 varieties of weeds while feeding your lawn! 3% iron for rich green turf. Phosphorus free. Isomer Specific by AOAC Methods. EPA Reg. No. 2217-643-9404. EPA Est. No. 9404-FL-01. Driven by Duration CR. Controlled-release fertilizer. Engineered for performance. Contains essential Micro-Nutrients for complete nutrition. Up to 4 month feeding.