What is wrong with my zucchini and pumpkin plants?
I plant vegetables in a raised garden that gets sun during different times of the day. In the middle section, I plant zucchini and pumpkin. The plants start out beautiful but develop white on the leaves and then turn yellow and barely produce. Why does this happen?
Carlton County Minnesota
Your squash and pumpkin plants may have been infected with powdery mildew. It would be better not to plant your squash and pumpkins in the same place in the garden this spring. To find out more about powdery mildew and strategies you can use to prevent or treat for it, see the powdery mildew section of the University of Minnesota Extension website's Diseases of Cucurbits page.