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How to Treat Snow Mold on Your Lawn

Snow mold is a fungal infection of the lawn that often occurs in early spring as snow melts from the grass. The melting snow results in over-watering of the lawn's roots, which provides an ideal growing environment for fungus that gradually kills off the grass. Snow mold typically grows in circular patches that take on a yellowed or bleached appearance, according to North Dakota State University. Treating snow mold takes time and patience to get the lawn looking healthy again.

Things You'll Need

  • Shovel
  • Rake
  • Fungicide
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Instructions

    • 1

      Shovel the snow off the grass as it starts melting or spread it out around the yard so it melts faster. The sooner the lawn gets regular sunlight and dries out from the excess moisture, the better the odds it will survive a snow mold infection.

    • 2

      Rake the grass so it stands upright. Grass gets flattened by the weight of the snow and foot traffic, which makes it susceptible to snow mold. Raking out the affected areas undoes some of this damage and helps the lawn to repair itself.

    • 3

      Mow the lawn in the fall, before snow falls, to further prevent the threat of snow mold. The longer the grass when the snow starts to build, the better the environment for snow mold growth.

    • 4

      Apply a fungicide to the lawn in extreme cases if the snow mold isn't going away on its own. This is rarely necessary but will help prevent further lawn damage if the mold is still spreading. Preventative fungicide application in the late fall is only recommended if your lawn has a history of snow mold problems.