Disease

The main disease that can harm this plant is "black spot". We can roughly infer its harm from the name of this disease. At the beginning of the disease, there will be some small brown or almost black spots on the leaves of the flowers, with irregular shape. If the disease continues to worsen, these spots will spread and eventually become a piece, forming large circular spots, and the color will completely turn black

To prevent and cure this disease, first of all, we have to cut off the damaged leaves and branches and dispose of them in a centralized way, preferably burn them all. Next, we can spray 75% chlorothalonil 800 times solution for control, which has a good effect. In addition, we should pay special attention to ventilation in the next maintenance, because it can effectively reduce the incidence of this disease

Pest

The first kind of pest is called "scale insect". This kind of pest often lives in groups and has a great impact on plants. It may cause spots on the leaves, and in serious cases, it will make the leaves fall. To deal with this kind of insect, we can use abamectin 2000 times liquid to spray. In addition, we should also pay attention to ventilation

The second pest is called "red spider", which is also familiar to us. They often gather on the handle or back of the leaf. To prevent and control this pest, we can spray a 40% concentration of Omethoate 1000 times to 1500 times. In addition, like the above diseases and insect pests, we also need regular ventilation