Because diseases are much easier to prevent than to cure, treatments
for diseases should be done before the disease appears. The most common
disease is Brown Patch Disease. As its name suggests, the symptom of
Brown Patch Disease is brown, pie-sized patches of grass. Brown Patch
Disease is common in Fescue and Zoysia. Professionally curing Brown
Patch is expensive because it requires weekly treatments. To limit the
cost, you may want to do the treatments yourself.