Which type of grass is primarily attacked by gray leaf spot?

Gray leaf spot is a fungal disease that primarily affects St. Augustine grass. This grass species is particularly susceptible because it grows well in warm, humid environments where the gray leaf spot pathogen thrives. The disease is characterized by lesions that can cause significant aesthetic and health issues for the lawn, leading to thinning grass and possible turf loss.

While other grasses like Bermudagrass and Ryegrass can be affected by various diseases, they are not the primary targets of gray leaf spot. Bermudagrass has different disease vulnerabilities, including dollar spot and similar issues that are more prevalent in that species. Ryegrass also faces its own set of diseases but does not typically show the same level of susceptibility to gray leaf spot as St. Augustine grass does. Perennial Bluegrass is similarly less impacted by the gray leaf spot pathogen compared to St. Augustine grass.

Understanding the specific susceptibilities of different grass types to pests and diseases is crucial for effective management and treatment approaches in turf management.