How to Spray Milk to Prevent Powdery Mildew Disease

In the humid south we can usually expect plant diseases to start showing up in June and July. Some of them are difficult to manage at all, but powdery mildew (PM) has a surprisingly effective organic solution… milk! I know, milk… it seems like one of these too-good-to-be-true crank organic remedies, right? The September 1999 issue of Crop Protection reported…