Did last winter’s lasting snowpack make dead patches on your lawn? This is caused by gray snow mold, a fungus.
Snow mold occurs when snow or leaves cover lawns for a prolonged period through the winter, especially in shady areas. The mold forms a circular shape, and actively grows when temperatures are just above freezing.
To prevent snow mold, remove leaves and matted materials from the lawn, which encourages proper air flow. Grass will grow back in the spring.
If snow mold is a consistent problem over several years, applying a fungicide, like F-Stop from Fertilome, in the fall can prevent damage.
