Improve Yard Conditions
In certain situations, it may be better to plant disease resistant types of grass to keep powdery mildew at bay.
Increase Sunlight
Trimming back excess foliage and pruning trees that provide a lot of shade in your lawn can help to decrease the shade and allow more sunlight to reach your lawn to prevent powdery mildew growth.
Increase Airflow
Pro Tip
Plant Disease Resistant Grass
In areas that cannot receive more light from pruning and are shaded most of the time from buildings or other structures, it might be best to replant this grass with a resistant variety, especially if powdery mildew is a continual issue each season.