Lots of heat and humidity this year so most gardeners are struggling with Powdery mildew, a fungal disease that attacks a wide range of plants. It appears as a white, dusty coating on leaves, stems and flowers. Learn more about this common problem and organic treatments.
Many of our vegetable diseases first appear to us as ugly leaves with blotch marks or a white coating. These marks can warn you about a big problem you should correct quickly or may just be relatively minor blemishes. The trick is to know which is which and what to do about it! Here are three great infographics to help you understand foliar diseases that affect edibles such as Onion, Squash, Zucchini, Melon, Cucumber and Tomatoes.