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Friday, October 30, 2015

Silver White Spots on Grass: Powdery Mildew

I've had powdery mildew on plant leaves before, but this is my first time seeing it on grass in my side yard. My west side yard is moist and flat, so it's not surprising that this area got a fungal disease. Powdery mildew looks like white spray paint on the blades of grass, and from an angle almost looks silver. I even noticed my footprints looked silver because it caused the blades to line up on their sides and make the white stand out compared to the grass around my foot prints.

white powder spots on lawn
Powdery mildew on grass looks like white powder or spray paint on the blades

grass dying in shadewhite grass blades

Long term solution is to get better air flow or circulation over the area so the grass doesn't stay damp, and make sure to not make it worse by watering too much or watering at night. The fungus should die over the winter (hopefully) so I'm not too worried about it. Ok so this article says it can survive the winter as spores, but the conditions in spring should be a little airier than this wet October we've been having.

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