What's going on with the curling and wilting of the rose leaves?
A comprehensive explanation of why the rose leaves are curling and wilting in the green plant flower aspect, the specific related content is as follows:
Why are the rose leaves curling and wilting? It can't escape these three reasons!
In the reader's group yesterday, a flower enthusiast asked why her rose leaves were curling and deformed.
The curling and deformation of rose leaves is a common problem in the cultivation process of roses. So, what exactly is the cause? It can be summarized as mainly three reasons.
1. Pest Infestation
Rose flowers are particularly prone to leaf deformation in summer and autumn, sometimes accompanied by a large number of brown scars, which is actually caused by thrips pest infestation.
Rose thrips are very small insects, which are generally not visible in summer. However, the damage caused by thrips to roses in summer is significant, leading to leaf and bud deformation, growth stagnation, and seriously affecting the growth of roses.
Why are the rose leaves curling and wilting?
If your roses have leaves that are smaller, deformed, curly, and have many brown spots, it can be concluded that thrips infestation is the cause, and timely treatment with pyrethrin spray is needed.
The best time to spray the pesticide is in the evening, as thrips mostly come out to activity at night. When spraying, make sure to cover both sides of the leaves, the branches, and the potting soil to achieve a better insect-killing effect.
2. Disease
Not only can thrips infestation cause rose leaf deformation, but powdery mildew can also cause rose leaves to curl and deform.
Powdery mildew commonly occurs in spring and autumn, in seasons with high humidity. When powdery mildew occurs, the white powder appears on the back of the rose leaves, causing the leaves to curl.
When you find that the rose leaves are curling, you should first check if there is white powder on the back of the leaves. If the rose leaves are curling and there is white powder on the back or front of the leaves, it means the plant has powdery mildew and requires timely treatment.