Gray leaf spot is a foliar disease that affects perennial ryegrass and tall fescue. Moderate outbreaks of gray leaf spot result in clusters of thin, off-colored turf. Severe outbreaks, however, will result in the death and decay of extensive areas and ruin the entire turf stand. This publication describes the symptoms and development of this disease, and provides management options.

Brown patch is caused by a fungal pathogen that affects all cool-season turfgrass species. Moderate to severe outbreaks on high-maintenance creeping bentgrass and annual bluegrass can result in thin, poor quality turf that may be predisposed to algae and moss infestation. This publication describes the symptoms and development of this disease, and provides management options.

Dollar spot is caused by a fungal pathogen and is a common concern on golf course turf, especially creeping bentgrass and annual bluegrass greens, tees, and fairways, where it can result in poor turf quality and appearance. This publication describes the symptoms and development of this disease, and provides management options.

Leaf spot and melting out are different diseases with similar symptoms and pathogen characteristics. They both attack Kentucky bluegrass, perennial ryegrass, and tall fescue, and appear to cause the most damage to golf course roughs, sports turf, and residential lawns. This publication describes the symptoms and development of this disease, and provides management options.

Pink snow mold, sometimes knows as Microdochium patch, affects cool season grasses. The publication provides information on characteristics of the disease and disease control options.