Symptoms: the leaves, stems and flowers of the plant will be harmed by bacteria. The spots of small water stains will appear on the leaves at first, and then they will turn into round brown spots soon after. There are halos of water stains around. When the disease is serious, the spots on the leaves will turn into large patches. In addition to affecting the leaves, it will also affect the flowers and cause them to stop growing.
Prevention and control: usually, it is necessary to strengthen the ventilation, which can not be blocked. After finding the disease, first remove the diseased leaves, and then burn the diseased plants.
Symptoms: at the beginning of the disease, it will cause the withering of the flower seedlings and damage the leaves. There are light brown spots on the front of the old leaves and white or light gray mildew layer on the back. In the later stage, when the disease is serious, it will cause the leaves to dry and turn brown, eventually leading to plant death.
Prevention and control: usually pay attention to the planting distance and strengthen the ventilation, which can effectively prevent the disease. In the early stage of the disease, spray a little mancozeb, ruitoxin, diansen ammonium, etc.
Symptoms: Miss Yu seldom suffers from insect damage, but sometimes she will be harmed by scale insects and beetles.
Prevention and control: if you are affected by pests, you can spray a little insecticide. Omethoate is very suitable. You can spray twice every 7 days.
