Instead of a powdery mildew, my plants are covered with something that looks like black mildew. Can you tell me what it might be?
Disease on Bell Peppers and Eggplant
Certified GKH Gardening Expert
It is sooty mold. It is a symptom of a pest problem. I recommend neem oil to treat it. It will kill whatever pest is on the plant and treat the sooty mold. Plus, it is organic and safe. Here is more information: