Is the Chinese rose a medicine jar?
Comprehensive explanation of the Chinese rose being a medicine jar, related experience in flower planting, let's take a look together!
Everyone says that Chinese roses are medicine jars, but seeing the beautiful Chinese roses of flower friends is irresistible, but it's really worrying that Chinese roses might get sick and infested with pests, it's so conflicting! Don't worry, today I will teach everyone about common diseases and pests of Chinese roses and their control methods. After learning these, you can confidently cultivate Chinese roses without fearing diseases and pests!
Firstly, let's talk about the common diseases of Chinese roses, knowing the diseases can help us solve them easily and respond effectively.
Chinese Rose Diseases
1. Chinese Rose Black Spot Disease
Black spot disease is the number one killer of Chinese roses, which can occur in spring, summer, and autumn, with a high incidence in summer. Many flower friends' Chinese roses become bare stems after a summer, all because of black spot disease.
Symptoms of Black Spot Disease
When Chinese roses get black spot disease, initially, small brown spots appear on the leaves, which gradually expand and turn into large black-brown spots, eventually leading to the yellowing and falling off of the entire leaf.
Control Methods
Black spot disease is extremely harmful to Chinese roses, so prevention is the main strategy. In spring, you should spray with zinc omethoate every half month for prevention. Especially in summer, more attention should be paid to spray prevention. After getting wet by rain, it is necessary to spray fungicides for prevention.
When black spot disease is found in Chinese roses, the diseased leaves should be removed promptly, and then the whole plant and potting soil surface should be sprayed with zinc omethoate and myclobutanil. You can also use mancozeb, carbendazim, etc., and it is recommended to use two types of medicine together for better results. Spray every 3-5 days, and continue for 2-3 times to completely cure the disease.
2. Chinese Rose Powdery Mildew
Another deadly disease of Chinese roses is powdery mildew. Chinese roses with powdery mildew not only look ugly, but the white powder covering the leaves will severely affect the photosynthesis of the plant. In severe cases, the powdery mildew can even wrap around the buds, causing them to wither.
Symptoms of Powdery Mildew
Powdery mildew initially appears as curled edges on the infected leaves, with white powder on the back of the leaves. If not treated in time, it will spread to the entire leaf, stem, and buds, causing large areas of powdery substance.
Control of Powdery Mildew
Powdery mildew is most prevalent in spring and autumn, with poor ventilation being the main cause. Therefore, when cultivating Chinese roses, it is important to maintain good ventilation in the environment and among the plants.
When powdery mildew is found on the leaves, they should be removed promptly, and then fungicides should be sprayed.
Powdery mildew is relatively more difficult to manage than black spot disease, as the fungal spores are not easily contaminated by the medicine. Therefore, when spraying fungicides, an adhesive should be added to increase the adherence of the medicine. For example, a little detergent or laundry water can be added.
The fungicides used to treat black spot disease, zinc omethoate and myclobutanil, can also be used to treat powdery mildew. For outdoor cultivation of Chinese roses, potassium sulfate is recommended, which has a good effect on treating powdery mildew.
Chinese Rose Pests - The three common pests are aphids, thrips, bees, and red spiders.
1. Aphids
Aphids are most prevalent in spring and autumn. They love to absorb the sap from the tender branches of Chinese roses, and their reproduction rate is very fast. They must be dealt with promptly when discovered.
Aphid control is very simple; a single spray of imidacloprid can yield good results.
2. Thrips
Are Chinese roses a medicine jar?
Flower thrips are extremely harmful to Chinese roses, causing leaf distortion and twisting, severely affecting the normal growth of the plant.
Flower thrips start to reproduce in spring and can become rampant by summer, so prevention must start in spring.
Thrips control is simple; spraying imidacloprid in the evening can achieve good therapeutic effects. It is recommended to use imidacloprid for prevention every half month in spring, and when new leaves of Chinese roses show brown patterns and deformation in summer, they should also be sprayed with imidacloprid for treatment.
3. Stem Bees, Leaf Bees, and Cutting Bees - The three major bees for Chinese rose enthusiasts are deeply hated.
Stem Bees
In spring, it is often found that a healthy large shoot suddenly droops, which is too残忍, watching a beautiful Chinese rose abort like this is heartbreaking!
This phenomenon is caused by stem bees, which lay eggs in the tender branches of Chinese roses. After hatching, the larvae eat the inner stems, causing the branches to lose water and wither.
In this case, the branches can only be cut off...
Leaf Bees
Compared to stem bees, leaf bees do not cause such direct harm, mainly affecting the leaves of Chinese roses.