Large patch is an occasional disease of warm-season turfgrasses (hybrid bermudagrass, zoysiagrass, and St. Augustinegrass) in Oklahoma. The disease can occur in residential, landscape, and recreational warm-season turfgrasses.  In Oklahoma, the disease is most noticeable in early spring when turfgrasses are breaking dormancy and weather conditions are wet and mild. In some years, the disease is also evident in the fall.  However, infection by the pathogen during this time of year may not always result in visible symptoms