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Patches of Dead Looking Grass in Early Spring

March 25, 2015

I am getting questions from northern lawn owners this time of year about patches in the lawn with stuck together grass blades.   This is caused by Gray Snow Mold or Pink Snow Mold which are fungi that thrive in moist conditions under melting snow that is on your lawn for several months. The Snow Mold patches are covered with gray, pink or white matted grass blades that appear to be stuck together. These patches can be up to several feet wide.  The problem is these matted patches can inhibit your lawn from coming out of winter dormancy.

Rake patches as soon as you can in spring with a leaf rake to allow air and sunlight to get to grass plants. Lightly infected grass plants usually recover when you feed your grass and temperatures start to warm. If the patches are dead (showing no small green grass shoots coming from the base of the grass plant after you rake), you may need to spread grass seed in those spots.

Your feeding should include a crabgrass preventer if crabgrass was a problem last summer. Click here to learn about Turf Builder with Halts Crabgrass Preventer. If you are putting down grass seed, be sure to use a crabgrass preventer that will not prevent your grass seed from growing. Click here to learn about Turf Builder Starter Food For New Grass plus Weed Preventer.

This is snow mold.  A light raking with a leaf rake will break up matted grass so sunlight and air can reach new grass shoots

This is snow mold. A light raking with a leaf rake will break up matted grass so sunlight and air can reach new grass shoots

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2 Comments
  1. Jared permalink

    Ashton, wondering if you can suggest a good reliable granular type moss killer that will nuke the moss in the lawn and kill it so I can power rake it out afterwards. Thanks

  2. Hi Jared
    Scotts Moss Control Granules will do the trick. The moss will turn black in a few days and can be easily removed.

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