What Is Causing White Splotches on Zucchini Plants
My zucchini plants have these white patches on the leaves. What is causing this, and what can I do to stop it? Thank you in advance! Wanda
It is probably due to high humidity or the inability of the plant to dry after a summer rain. A fungicide will help if you spay often, especially after a rain storm. crowding can be a problem too. It needs good air circulation.
Also try newspaper or cardboard under the plant to avoid rain drops from splashing potentially diseased on the plant.