Powdery Mildew on Lawn: Fungicide or Compost?

White powdery coating returning yearly? That’s powdery mildew (or snow mold). Standard treatment: Benomyl fungicide. But high-quality, thermophilic compost applied site-wide often suppresses it naturally by boosting beneficial microbes.

Fungi thrive when soil is wet, nutrients abundant, and temps high. Compost improves drainage, balances nutrition, and introduces antifungal organisms. Try compost first—it’s safer and builds soil.