Is there a spray or chemical I can use on my zucchini plants to prevent/stop mildew? This is my 3rd year growing zuchinni and have not had any luck so far.
Certified GKH Gardening Expert
I personally like neem oil or you can use copper sulfate. Here is an article that you may find helpful: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm