Pink Snow Mold - Cool Season Grass

Pink snow mold in the lawn

Grass species affected

Disease occurrence

  • Late-fall through early-spring
  • Pink snow mold doesn’t require prolonged snow cover, although snow, as well as cool, wet conditions, may enhance its development.

Symptoms

  • Circular, pale-yellowish to reddish patches that may become white to pale-pink, typically seen with a pink outer ring.
  • Grass has a matted appearance.
  • In ideal conditions, you’ll notice a thin, fluffy covering of fungi that looks like stretched-out cotton covering the patch.
  • Generally, infected areas are a little slower to green up.

Management

  • Avoid excess application of nitrogen in the fall. A slow-release, low-nitrogen fertilizer, such as Milorganite, should be used for dormant fertilization.
  • Rake up leaves in fall.
  • Distribute large piles of snow to encourage rapid melting.
  • Gently rake the affected areas to promote drying.
  • Regularly dethatch your lawn.

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