Snow Mold: How Can Greenwise Help?

Snow Mold circles

Snow Mold Circles

Has Your Turf been Hit with Snow Mold?

Our spring season has just begun, and Andy, one of our turf technicians, is seeing quite a few patches of snow mold.

Snow mold is something we can see in the Chicagoland area after a long winter. The good news is that it’s fairly easy to resolve. If you are on our lawn care program, we’ll take care of this issue throughout the season with aeration, seeding, organic fertilizer, as well as good mowing and watering practices.

Signs and Symptoms

Do you see circles of dead grass in your lawn? That may be a sign. Snow mold is a type of fungus and turf disease that damages grass after the snow melts, typically in late winter. Usually, snow mold occurs in patches that look like circles between three and 12 inches in diameter. Sometimes, your yard might have so many circles, it’s hard to differentiate between them, so they look like one big patch. 

Two Types of Snow Mold:  Pink and Gray

Gray Snow Mold

Close up of Gray Snow Mold

Close up of pink snow mold

Pink Snow Mold

Both types of mold look alike, so aren’t that easy to differentiate.

Gray snow mold causes less damage than the pink version, because even though it may seem widespread, it’s only harming the blades of grass, not the grass itself. Pink snow mold is more troublesome because it causes more damage by destroying the roots and crowns of grass.

In both cases, you’ll see patches that are a whitish tan straw color. The pink version gets its name because of a slight pinkish tint on the edges of the patch, and the gray snow mold has sclerotia (small, seedlike structures) that are dark reddish brown to black.

In both types, the leaves are matted together and the patches look sunken. When the patches are wet, they appear slimy, and when dry the texture is more like a crust of dead leaves.

Questions? Please call us at 847.866.1930. We are happy to take a look at your property and see how we can help resolve your lawn issues.

2 Responses to Snow Mold: How Can Greenwise Help?

  1. A-Jay Buhay April 17, 2019 at 11:48 am #

    Hey there,

    I’m from Saskatchewan in Canada, and our winters are pretty brutal too. I’ve never seen this snow mold before. What is the cause of it, and what kind of treatments are necessary?


    • Robyn Hurtig September 25, 2019 at 4:16 pm #

      Hi A-Jay, I’m sorry that I didn’t see your question months ago! We don’t see snow mold often, but usually when the winters are especially long. As mentioned in the article, it’s pretty easy to remedy through aeration, seeding, organic fertilizer, as well as good mowing and watering practices. Hope that helps!

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