Principle Turfgrass Hosts:
St. Augustine grass, Perennial ryegrass, Bermudagrass, Centipedegrass, Bentgrass, St. Augustine and various species of Fescue
The symptoms of gray leaf spot vary depending on the grass type. On St. Augustine grass
, gray leafspot first appears as small, brown spots on the leaves and stems. The spots quickly enlarge to approximately ¼ inch in length and become bluish-gray in color and oval or elongated in shape. The mature lesions are tan to gray in color and have depressed centers with irregular margins that are purple to brown in color.