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How to Get Rid of Black Mold on a Lawn

By Carmen L. Diaz ; Updated September 21, 2017

A healthy, beautiful lawn adds value to your property and provides a place in which adults can entertain, children can play and let their imaginations and energy run free and everyone can connect with nature. Lawn diseases can turn your piece of nature into an unsightly area. According to Allaboutlawns.com, most lawn diseases come from fungi that live off grass. What looks like black mold in grass is usually a species called slime mold.

Attack the mold promptly before it can get hold of your lawn. Slime molds received their name because of the way in which they can spread, but their consistency is crusty. Use a rake to scrape the mold off. Wear a pair of latex gloves and a mask before you begin. Place the mold particles inside a ziplock bag for safe disposal.

Inspect your lawn. Look closely to determine how bad the problem is. Is it an isolated patch or has the problem spread throughout your plot? Are there pools of water on the surface of your lawn? Is the top surface of the soil very moist, and it is very dry one or two inches below?

Aerate your lawn. If you found pools of water or any other indication that water is not penetrating the soil, aerating will help control and cure the problem. Use a manual aeration tool and poke it on the ground so water and nutrients can penetrate the soil instead of lingering on the surface. It is a good idea to treat your whole lawn to keep it beautiful and healthy. Clean the tool with soap and water and apply a fungicide and allow to dry before aerating the parts of the lawn that don't have the mold to avoid cross-contamination.

Apply a fungicide to the affected areas. It is important to also treat about two inches beyond the affected area to control the problem from spreading.

Check your lawn every week and treat again to keep this problem under control.


Things You Will Need

  • Latex gloves
  • Mask
  • Ziplock bag
  • Tool to aerate the lawn
  • Fungicide
  • Rake


  • Rake leaves that fall on your lawn promptly to prevent them from decaying and spreading mold to your lawn.