It causes a rapid drying-out of the leaf tissue turning the leaf a light straw color. Patches may mat together and become closely pressed to the soil surface. Restricted to the leaf blades only. Late winter and early spring. When temperatures are between 55 to 70 degrees F, and extended periods of rainfall or overcast weather.
Areas turn dark pruplish-red, then turn brown and finally a dull white.
Damage is mostly seen on the entire sheath of the grass causing the leaves to drop off. Kentucky bluegrass, bentgrasses, ryegrasses, chewing fescue, tall fescue and creeping red fescue. Late winter, spring and fall. Cool wet spring and fall months. Areas turn tan or brown.