How to Avoid Snow Mold on Your Lawn

As winter blankets your yard in snow, a hidden threat might be quietly brewing beneath: snow mold. This common lawn disease thrives under snow-covered, damp conditions and can leave unsightly patches on your grass by spring. But don’t worry—there are effective ways to prevent snow mold from taking hold.

Here’s what you need to know about snow mold and how to protect your lawn.

What Is Snow Mold?

Snow mold is a fungal lawn disease that typically appears as circular, matted patches of discolored grass when the snow melts. There are two main types:

  1. Gray Snow Mold: Less severe and commonly found in cool-season grasses.
  2. Pink Snow Mold: More aggressive and capable of killing grass roots.

Both types thrive under the insulating layer of snow, especially if your lawn was left damp and covered with debris.

Tips to Prevent Snow Mold

  1. Mow Your Lawn Properly Before Winter
    Keep your grass at a moderate height before the first snowfall. Grass that’s too long can create ideal conditions for snow mold to develop.
  2. Rake Leaves and Remove Debris
    Fallen leaves and organic debris trap moisture, which promotes fungal growth. Clear your yard of any debris to ensure proper air circulation.
  3. Avoid Over-Fertilizing in Late Fall
    Applying too much nitrogen fertilizer late in the season can encourage lush growth that’s more susceptible to snow mold. Opt for a balanced winterizer fertilizer.
  4. Spread Snow Evenly
    Avoid piling snow in certain areas, as these heaps take longer to melt and create ideal conditions for mold.
  5. Aerate Your Lawn
    Aeration improves soil drainage and reduces compaction, making it harder for snow mold to take hold.
  6. Apply Preventative Fungicides
    For areas prone to snow mold, a late-season fungicide application can provide an extra layer of protection.

What to Do If Snow Mold Appears

If snow mold does develop, don’t panic. Once the snow melts:

  • Rake out the affected patches to promote airflow and dry the grass.
  • Avoid overwatering the lawn as it recovers.
  • Overseed damaged areas to encourage new growth.

For severe cases, consult a lawn care professional to assess and treat the damage.

Keep Your Lawn Healthy All Year with Hartigan Outdoors

Don’t let snow mold ruin your lawn’s curb appeal. At Hartigan Outdoors, we specialize in year-round lawn care, from pre-winter preparations to spring recovery services. Our experts can ensure your lawn stays lush and mold-free through every season.

Contact Hartigan Outdoors today to schedule your winter lawn care consultation and keep your yard looking its best!

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