I've planted squash this summer. Also this summer, my part of Michigan received a lot of rain. Then I noticed cloudy power like
Without seeing a pic I would guess that your squash has powdery mildew and yes the plant is diseased. Spray with Neem Oil every 7 days.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.