Symptoms: this disease usually occurs in high temperature period, and is easy to occur under strong sunlight. Spots will appear on the surface of the leaves, and then the leaves will wither, affecting the normal growth.
Prevention and control: usually do a good job in prevention, need timely ventilation treatment, reduce the possibility of disease occurrence, and then cooperate with the use of drugs, you can choose such fungicides as DuPont Fuxing, which can play a good effect.
Symptoms: the branches on the plant will gradually wither, which will not only affect the ornamental, but also cause damage to the growth of the plant itself.
Prevention and control: mainly through pruning to prevent and control, but also regularly spray carbendazim, mancozeb prevention and control.
Symptoms: it mainly occurs in the high temperature and humid growth environment, which is prone to its own diseases. The main performance is that the leaves and flowers start to rot.
Prevention and control: pay attention to the maintenance methods and try to avoid the occurrence of diseases. If the disease occurs, cut off the branches and debris in time to avoid infecting the healthy part, and then use mancozeb as a medicament to prevent and control.
Symptoms: it rarely causes insect damage, but aphids may appear, which will parasitize on the leaves and suck the juice inside.
Control: if the secondary disease is found, it needs to be washed with water in time. If there are too many aphids, they can be killed with 1200 times of dichlorvos aqueous solution.
