Perennial ryegrass (Lolium perenne) is found in lawns all across the United States. In cooler climates, it's a popular cool-season turf grass for permanent lawns. In warmer climates, it's often ...

With some TLC in fall and winter, hardy perennial lawn grasses like Kentucky bluegrass, fescues, and perennial ryegrass, will send up bright green shoots when days lengthen and temperatures ...