Discover the unwelcome signs of snow mold, a fungal issue affecting cool-season grasses, typically visible in spring after the snow melts.
Causes of Snow Mold: Learn how a heavy, early snowfall on unfrozen ground, combined with moisture and coverage from leaves and debris, contributes to snow mold. Differentiate between gray snow mold (Typhula blight) and pink snow mold (Microdochium patch or Fusarium patch).
Signs of Snow Mold: Identify the straw-colored circular patches with matted and crusty grass, appearing as the snow melts. Understand the distinctions between gray and pink snow mold symptoms.
Treatment Strategies: Emphasize the importance of prevention, as fungicide treatments are not effective in spring. Recommend Scotts® DiseaseEx™ Lawn Fungicide in the fall before significant snowfall. For post-snow mold damage, advise gentle raking, followed by repair and reseeding with products like Scotts® EZ Seed® Patch & Repair.
Preventative Measures: Provide practical tips to prevent snow mold:
- Mow Before the First Snow: Trim grass shorter to discourage gray snow mold.
- Manage Leaves: Mulch leaves into the lawn to avoid creating a favorable environment.
- Dethatch: Reduce thatch thickness in fall to discourage snow mold development.
- Moderate Nitrogen Use: Apply a slow-release fertilizer like Scotts® Turf Builder® WinterGuard® Fall Lawn Food to prevent excessive nitrogen.
- Apply Preventative Fungicide: Suggest using Scotts® DiseaseEx™ Lawn Fungicide in the fall for areas prone to annual snow mold.
- Snow Removal: Advise against creating deep snow piles in the lawn during snow clearing to prevent prolonged snow mold development.
By following these guidelines, homeowners can understand, prevent, and manage snow mold for a healthier and more resilient lawn.