1, rose black spot disease: when the black spot disease of cream cup rose occurs, black spots will grow on the leaves. This disease is not fatal to the rose, but the most serious thing is that the leaves and flowers will fall off, which can be prevented by bordeaux solution or mancozeb.

2. Powdery mildew: Powdery mildew of cream-cup rose is also a disease that plagues rose. Powdery mildew is more serious than black spot disease, and its lethality is more serious than black spot disease. Some powdery substances will appear on the leaves. If the branches are serious, they can be treated with some fungicides for 7 days.