This disease typically develops in cold, wet weather under snow or leaf cover:

Fusarium patch, also known as pink snow mold, is a turfgrass disease that thrives in cold, wet conditions, particularly under snow or leaf cover. The pathogens that cause Fusarium patch are more active during cooler temperatures, typically becoming prominent in late winter or early spring when snow begins to melt and conditions are favorable for the disease to develop.

In these specific environmental conditions, the disease can spread rapidly, resulting in characteristic circular patches of affected turf that may be brown or tan in color. The presence of leaf litter or snow cover can exacerbate the situation by creating an environment that is conducive to the fungal growth, trapping moisture and limiting air circulation.

Understanding the specific conditions under which Fusarium patch develops helps in proper management and preventive strategies. This can include practices such as reducing leaf litter, ensuring proper drainage, and managing thatch to minimize the habitat conducive to this disease.