Powdery mildew on roses All gardeners know the name Powdery mildew on roses, because this is one of the most unpleasant diseases and many different types of plants are ill with it. If you do not react to this disease in any way, the plants will simply die. Of course, when any of your plants dies, this is unpleasant, but when an ornamental bush dies, this is doubly unpleasant. Further you will learn [...]