Brown Patch

Brown patch is a fungus that causes circular or irregular patch of thinned, light brown grass. The leaves of the turfgrass will wilt and die, which causes the brown patchy areas. It affects the leaves of the turfgrass, but doesn't kill or discolor the turfgrass roots Active infections are recognized by yellow leaves at the edge of the patches. Brown patch develops most rapidly in wet conditions and between 75 and 85 degrees F Brown patch is most evident in this area from September through the beginning of December.