Why is my pumpkin white?
Thereof, why are my pumpkins turning white? Powdery mildew, a fungus that looks like a white powder that spreads until it covers the leaves of pumpkin plants, can cause the foliage to drop. Pumpkins grow in U.S. Department of Agriculture plant hardiness zones 3 through 9. Humid, warm zones will require more diligence to keep…