What to do when roses have powdery mildew disease
An article with useful knowledge, introducing how to deal with powdery mildew disease in roses. Let's follow the editor to see the specific content!
What to do when roses have powdery mildew disease
When roses have powdery mildew disease, it is necessary to cut off the affected parts as soon as possible. During the onset of the disease, there will be white moldy substances on the leaves and flower buds of the plant. At this time, all branches, leaves, and flowers infected with the pathogen should be destroyed to prevent the spread of the pathogen. After pruning, spray 70% methyl thiophanate 1000-1500 times liquid, applying it once a week for a week to completely control the disease. In addition, the environment should be changed in the later stage to ensure good ventilation and suitable temperature and humidity.
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