Powdery Mildew
(Erysiphe grarninis)

Powdery mildew occurs primarily in the spring and autumn when days are mild and cloudy and nights are cool and damp. This disease is more severe when the lawn is growing in a shaded area and the air
circulation is restricted (on north or east side of buildings and under dense trees).

On an established lawn, a severe outbreak will weaken and may kill the plant. Typically, it will cause lawn deterioration by thinning the turfgrass shoots and roots.

Signs and Symptoms:
Powdery mildew appears as a white powdery cast, as if the lawn area had been dusted with flour. The leaf blade under the mildew will become yellow and later turn to a tan color. If severe, the leaves will dry up and die.

Cultural Practices for Control:
Seed or sod with disease-resistant and shade-tolerant cultivars.
Avoid light, frequent watering.
Avoid watering during evening hours.
Mow the lawn at a height of 2" to 3" and a frequency that removes no more than 1/3 of the leaf blade.

Treatment:
For severe outbreaks, it may be necessary to combine a fungicide with the practices listed. Contact Pro Care's customer service department or your county cooperative extension agent for recommendations.

The Pro Care staff is always ready to assist you with your lawn. Please call if we may provide any information to enhance your lawn's health or appearance.