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Home > Diseases > Lawn Diseases > Snow Molds

Pink Snow Mold—Microdochium nivale

Gray Snow MoldTyphula spp.

Snow molds affect the aesthetics of turf and lawns.

pink snow mold damage snow mold up close
Damage from snow molds become apparent as snow melts. Pink snow mold, shown above, starts white and becomes a faint pink color. Symptoms are circles, 3 to 12 inches in diameter, of dead grass which may merge and not be recognizable as individual circles. Gray snow mold, shown above, is generally white to gray in color. Circles consist of dead and matted grass blades.
close-up of pink snow mold damage close-up of gray snow mold damage dead grass caused by gray snow mold
Close-up of pink snow mold damage. Close-up of gray snow mold damage. Dead and matted grass caused by gray snow mold.

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[Photos: William M. Brown Jr.,; unknown; William M. Brown Jr.,; Iowa State University; Iowa State University; Iowa State University]

It is the policy of the State of Maine to minimize reliance on pesticides. The Maine Department of Agriculture and the Maine IPM Council encourage everyone to practice integrated pest management and to use pesticides only as a last resort. The mention of pesticides in the fact sheets linked to these pages does not imply an endorsement of any product. Be sure that any product used is currently registered and follow all label directions.