Rose Black Spot Control Methods
This article introduces the planting content of roses with black spot control methods, and will take everyone to understand together next.
This is the 890th day of original articles.
Series of Rose Cultivation Articles: No. 87
It seems that there has been more rain recently. Do you feel that way?
I saw bayberries in the fruit store yesterday, and then I remembered that the "plum rain" mode seems to be about to start. No wonder the weather has been humid and continuously rainy lately.
For our beloved roses, the "plum rain season" is not a comfortable season. Due to the frequent rain, black spot disease in roses is prone to outbreaks.
What is rose black spot disease?
Rose black spot disease is a worldwide disease that mainly affects the leaves of roses, forming irregular black or brown spots on the leaf surface. In severe cases, it can cause the entire leaf to fall off.
For roses, the destructiveness of black spot disease is significant, directly affecting the quality of blooming in autumn and spring.
Since roses love sunlight and need leaves for photosynthesis, if infected with black spot disease and leaves fall off, it will severely affect the photosynthesis of roses, leading to weak growth and affecting blooming.
Peak period of black spot disease:
Rose Black Spot Control Methods
In rainy seasons, black spot disease is more likely to occur. If infected plants are not treated, after being rained on, the fungal spores of brown spot disease will spread rapidly, infecting other leaves and plants.
Therefore, preventive measures should be taken during the rainy season when black spot disease is common.
Methods for controlling black spot disease:
Now is the peak season for black spot disease, and preventive measures should be taken frequently, such as using zineb.
If you find that roses have been infected with black spot disease and there are few diseased leaves, you can cut off the diseased leaves and then spray fungicides to treat black spot disease, such as myclobutanil, carbendazim, flusilazole, and picoxystrobin.
Black spot disease should be prevented first, using zineb after every rain.
When treating, for severely infected plants, two types of drugs can be used simultaneously to enhance the therapeutic effect. Be sure to spray the entire plant and the potting soil.
Rose lovers who grow roses outdoors should remember: fertilize before the rain and spray after the rain.
Before the rainy season arrives, take action immediately to prevent black spot disease.
If you have any questions about gardening, visit Green Plant Enthusiast Network. Please follow my public account: Green Plant Enthusiast Garden (ilanyao).
Have you got the detailed introduction of the rose black spot control methods brought by Green Plant Enthusiast Network?