Powdery mildew on plants—a white fuzz or powder that usually appears on leaves and sometimes on the stem, flowers, or fruit—is a common ailment. "The upper leaf surfaces will have a powdery ...

To prevent powdery mildew from spreading, remove all affected parts of the plant. If only a few leaves are affected, simply ...

These appear on leaves and stems as a white powdery substance that spreads rapidly throughout your plants, causing leaves to curl and the overall health and production of the plant to suffer.