What is the cause of mildew on cucumbers, squash and melons?
White powdery mildew on cucumber and squash. Please suggest a treatment and identify a cause if possible. Thanks
Certified GKH Gardening Expert
This is very common. It is usually due to high humidity or overwatering. You should only water when the soil is completely dry down to about two inches.
The cure is simple, and there are many ways to do so. Neem oil is my "go to" but there are many others.
This article will help: https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm