What is the appearance of brown patch disease in turfgrass?

Brown patch disease in turfgrass is characterized by its distinct appearance, which manifests primarily as irregular, brownish patches on the grass surface. The areas affected may initially show a purple or gray-green coloration, particularly at the edges, before they ultimately turn brown. This is indicative of the disease's progression and the combination of both discoloration and the die-off of tissue.

The purple to gray-green areas are often more prominent in warmer weather, especially during periods of high humidity and temperatures. These conditions create an environment conducive to the pathogen responsible for brown patch disease, making the identification of this specific visual cue crucial for effective management.

Understanding this appearance is vital for lawn care professionals and homeowners alike, as it allows for timely treatment interventions that can mitigate damage and restore the turf's health.