The Maintenance and Precautions of Chinese Roses
The editor is here to answer netizens' questions about the maintenance and precautions for Chinese roses. Please see the detailed introduction below.
The Maintenance and Precautions of Chinese Roses
This autumn seems to have arrived a bit early this year. As soon as the beginning of autumn was marked, the coolness of autumn could be felt. After the weather cools down, the pests on Chinese roses will gradually increase. Therefore, in the next month of management, we need to pay attention to the following four points.
1. Preventing Thrips and Various Caterpillars
Thrips have been very common recently, mainly manifested as畸形 and scars on the new leaves of Chinese roses. If the Chinese rose does not sprout new buds continuously, it is necessary to pay attention to whether the new buds have turned black or withered, which could be caused by thrips.
Thrips are not easy to eliminate completely, but there's no need to worry too much. Thrips are generally easy to control. As long as the number of pests is controlled and they do not cause obvious harm to the new buds of Chinese roses, it is fine.
To manage thrips on Chinese roses, it is recommended to spray pyrethrin or high-chlorofluorocarbon diluted solution on the branches, leaves, and soil surface of Chinese roses in the evening or after sunset, which can have a good insecticidal effect. Note that it is much better to spray insecticides at night than in the morning to kill thrips, as they are active at night.
2. Preventing Black Spot Disease
This year has had a lot of rain, especially after the consecutive rainy days before, the black spot lesions have become more serious. In the face of severe black spot disease, it is essential to persist in treatment. Spray with carbendazim and azoxystrobin together, and after a week, spray with zineb and myclobutanil together.
For minor black spot disease, one application of the pesticide is usually enough to control it. For severe black spot disease, two to three applications may be needed to treat it effectively, and regular prevention is also required afterward.
3. Pay Attention to Preventing Red Spider Mites
In autumn, it is also the season when red spider mites are highly prevalent, especially for Chinese rose potted plants in indoor balconies with poor ventilation, which are prone to red spider mites. Therefore, it is important to start preventive measures now. When applying pesticides, you can add red spider mite-killing agents, and when watering, make sure to spray the leaves of Chinese roses.
Spraying the back of the Chinese rose leaves with water not only washes away newly appeared red spider mites but also increases humidity, preventing the occurrence of red spider mites.
4. Maintain Sufficient Fertilization and Watering
In fact, if the prevention and control of Chinese rose diseases and pests always rely on chemical pesticides, it can become quite labor-intensive, much like a weak and sickly child who easily gets into trouble.
If you want to make caring for Chinese roses easier and keep the plants healthy and robust, it is the best choice. When Chinese roses are growing vigorously, their resistance to diseases and pests will be stronger. Even if diseases or pests occur occasionally, they can be easily controlled with timely medication.