Fungicides are used to control or prevent fungal disease. Fungicides work by stopping or killing the fungus that causes a lawn disease, which prevents the disease from infecting plants and spreading throughout the lawn.Unfortunately, fungicides cannot completely “cure” grass or plants that have already been affected by a lawn disease. However, if applied quickly enough, fungicides can stop the spread of the disease and help plants recover from the disease.
Fungicides also do not control or prevent damage to grass or plants caused by insects. For this reason, be sure to determine if your lawn damage has been caused by a fungus, pest, or something else before treating your lawn.
Fungus or fungi, as they are known collectively, are like weeds in that certain fungi are prevalent in different areas of the country. Where a fungus is found depends on temperature, humidity, and local crops.