Characteristics of Gray Leaf Spot
Gray Leaf Spot is primarily caused by warm and humid conditions, making Houston’s climate an ideal breeding ground for this fungal disease. The pathogen thrives in temperatures ranging from 75 to 85 degrees Fahrenheit and is exacerbated by prolonged periods of leaf wetness. St. Augustinegrass, a popular turfgrass variety in Houston, is particularly susceptible to Gray Leaf Spot.Read Also : Battling Pythium Blight: Protecting Your Houston, Texas Lawn
Identification
- Leaf Lesions: Gray Leaf Spot is characterized by small, dark brown to gray lesions with distinct, dark borders on the grass blades.
- Circular Spots: The lesions often merge, forming larger, irregularly shaped spots on the leaves.
- Blades and Sheaths: The disease can affect both the blades and sheaths of the grass, leading to weakened, discolored, and easily damaged turf.