By spreading Gulf Annual Ryegrass now you can enjoy a green lawn through the winter. We recommend spreading it at the rate of 10 pounds per 1,000 square feet. Annual Ryegrass will quickly sprout if enough moisture is available making it very useful at preventing erosion during the cool months. No damage should occur to your permanent lawn by over-seeding Ryegrass provided that is properly mowed in the spring when your permanent lawn will be coming out of dormancy