ROSE PESTS AND DISEASES UK
Roses suffer from several pests and diseases, the most common of which isrose black spot. Aphids and rose powdery mildew are the next most common problems.
All can be controlled to a great degree. However, older varieties of roses dosuffer worse compared to more modern varieties.
If you are contemplating buying a rose bush bear this in mind andconsider how much time and effort you are able to devote to keeping your roses healthy.
ROSE BLACK SPOT
SYMPTOMS: Purple / black spots appear on leaves from late spring and throughout the year. The leaves turn yellow and often fall off prematurely. See the picture below.
TREATMENT: For complete details on how to treat Rose Black Spot