What types of grasses are primarily susceptible to Gray Snow Mold?

Gray Snow Mold, caused by the fungus Typhula spp., primarily affects specific types of turfgrasses that are more vulnerable to its effects, particularly during periods of snow cover and cool, moist conditions. Creeping bentgrass and tall fescue are notably susceptible to this disease, making them key grasses to monitor and manage in order to prevent infection.

Creeping bentgrass is often found on golf course greens and is known for its dense growth, which can retain moisture—creating ideal conditions for the development of Gray Snow Mold. The susceptibility of tall fescue also lies in its growth pattern and environmental preferences, as it thrives in similar conditions that promote fungal growth.

In contrast, other grass types listed—such as fine fescue, annual bluegrass, Bermuda grass, perennial ryegrass, and zoysia grass—exhibit varying levels of resilience or adaptability to Gray Snow Mold, thus being less prone to damage from this specific fungal pathogen. Understanding the susceptibility of different grass types is crucial for developing effective turf management practices to manage and mitigate the impacts of this disease.