Problem: Septoria Leaf Spot
This lawn disease, also called tip burn, is caused by a fungus (Septoria species) that infects most northern grass species and bermudagrass. It is most prevalent in the cool, wet weather of early spring and fall. Lawns that have not been fertilized are most susceptible. The disease usually attacks in the spring, declines during the hot summer months, and returns in the fall. Because the disease infects leaf tips first, frequent mowing removes much of the diseased part of the grass blades.
Lawns that have not been fertilized are most susceptible to this disease. Keep the lawn healthy and vigorous by following recommended lawn care practices. Mow the lawn regularly. Because no variety is completely resistant, plant a blend of two or three disease-tolerant varieties.