08/31/2026
High humidity and late-summer heat create the perfect storm for Gray Leaf Spot—a destructive fungus that can wipe out perennial ryegrass and tall fescue in just a few days. Read our guide on identifying early symptoms and prevention strategies before it spreads! 🌿
Gray Leaf Spot (GLS) is commonly thought to be a disease associated with the cool-season grasses of ryegrass and tall fescue, but it has a rather destructive history with the warm-season grasses of St. Augustinegrass and kikuyugrass. Gray leaf spot is most severe in newly established turf. The disea...