There are three groups of grasses which are used for the development of lawns in the far south (throughout Georgia, Alabama, and Florida). The first group consists of the more or less native grasses, Bermuda grass, St. Augustine grass, and blanket or carpet grass. These grasses will not make a perfect turf as a "perfect turf" is known in the northern states. They grow vigorously and spread rapidly when the temperature does not fall below 50 or 55 degrees. The second group, of which Ross's Southern Mixture is typical, is composed of types of northern grasses, such as orchard grass, Rhode Island bent, redtop, and a small portion of Italian rye, which as a result of experiments have produced good turf on southern lawns. The third group is made up of Italian rye, which germinates quickly and produces a green turf and lives for but a short period during the cooler winter months. It burns out quickly during the hot summer months.