Control weeds, insects, and other lawn pests which can cause stress. A stressful turfgrass environment often favors diseases. Follow all label directions when using lawn chemicals, as improper application can sometimes lead to turfgrass injury. However, if you follow a sound program of disease management through the practices described above, rarely should you need fungicides for a home lawn. Before using any fungicide, be sure the disease is properly diagnosed.
Commercial fungicides are effective only against specific turfgrass diseases.
They must be applied at the right time to be effective and often must be applied several times. For these reasons, fungicide use is generally discouraged for home lawns. If a disease breaks out in your lawn, keep in mind that a return to weather favorable for turf growth and vigor will help alleviate the problem.