While fungus naturally occurs in grass and can be harmless, certain conditions can cause these fungi to become harmful diseases to your grass. Weather conditions, especially temperature and humidity, can make certain fungi flare up, and too much rain or drought can also cause disease. Mowing too low of a setting and cutting the grass off closer to the roots can make it more susceptible to fungus, and large amounts of fertilizer can green up your lawn quickly, but too much nitrogen can lower grass’ defense against disease. Here are some tips to help prevent disease in your lawn:
- Aerate your yard every couple of years. This loosens the soil and allows grass to put down stronger roots, as well as allows more oxygen and water into the ground.
- De-thatch your yard. Removing excess grass clippings and debris allows better absorption of water and drainage of excess water.
- Apply a layer of top-dress. This will also help drainage and improve the soil.