How to Identify and Treat Snow Mold in March Lawns

by

As winter ends and spring begins, many lawn owners notice an unusual appearance on their grass. Snow mold is a common problem that can affect lawns during early spring, especially in March. Recognizing and treating snow mold promptly can help restore your lawn’s health and appearance.

What is Snow Mold?

Snow mold is a fungal disease that develops under snow cover during cold weather. It appears as patches of gray or pinkish mold on the grass. The disease thrives in moist, cold conditions and can cause significant damage if not addressed.

How to Identify Snow Mold

Identifying snow mold involves observing the lawn for specific signs:

  • Appearance: Grayish or pinkish mold patches on the grass surface.
  • Texture: Moldy areas may feel fuzzy or slimy.
  • Shape: Patches are often irregular and can spread over large areas.
  • Timing: Usually occurs in early spring after snow melts.
  • Grass Condition: Affected grass may appear brown or dead but often recovers after treatment.

Steps to Treat Snow Mold

Effective treatment involves proper lawn care practices and, if necessary, fungicides. Follow these steps:

  • Rake the Lawn: Remove moldy debris and thatch to improve air circulation.
  • Aerate the Soil: Aeration reduces soil compaction and helps dry out the lawn.
  • Improve Drainage: Ensure proper drainage to prevent excess moisture.
  • Reduce Lawn Moisture: Water lawn only when necessary, preferably in the morning.
  • Apply Fungicides: Use a fungicide labeled for snow mold if the problem persists. Follow manufacturer instructions carefully.
  • Reseed Damaged Areas: After the lawn dries and recovers, overseed bare patches to promote healthy growth.

Preventing Snow Mold in Future Winters

Prevention is key to avoiding snow mold recurrence:

  • Maintain a Healthy Lawn: Fertilize appropriately and mow at recommended heights.
  • Avoid Excessive Thatching: Remove excess thatch that retains moisture.
  • Manage Snow Cover: If possible, lightly brush snow off the lawn during heavy snowfalls to reduce prolonged coverage.
  • Proper Lawn Drainage: Improve soil drainage to prevent water accumulation.
  • Timing of Fertilization: Avoid fertilizing late in the season to reduce lush, vulnerable growth.

By recognizing snow mold early and applying appropriate treatments, you can restore the health of your March lawn and enjoy a lush, green space in the coming months.