Thatch reduction will also help reduce disease severity. The most effective means of controlling leaf spot and melting out is to plant resistant cultivars. Several varieties of Kentucky bluegrass are available with good resistance to this disease. It is recommended that a blend of three or more bluegrass cultivars be used. Those cultivars with moderate resistance include Aquila, Belturf, Birka, Bristol, Brunswick, Cheri, Georgetown, Monopoly, Plush, Primo, Silverblu, Vantage, and Windsor.
Several fungicides are available for the control of leaf spot and melting out.
Application of fungicides depends somewhat on disease severity and the susceptibility of the turfgrass cultivar. If leaf spot has occurred in previous years but has not caused significant injury, then fungicides may not be needed. Nevertheless, chemical protection may be required on susceptible cultivars. Fungicides are protective in nature and should be applied as soon as symptoms are observed. The disease is very difficult to control once the crown rot or melting- out phase has begun.