1. Anthrax: this disease mainly damages the leaves. At the beginning of the disease, the damaged parts will produce brown spots, mainly along the veins. When the disease is serious, the spot will form a brown spot with a light yellow brown edge, and then the leaves will dry and fall off.
2. Leaf spot: there are brown round spots on the edge of the leaf, and the edge is dark brown. The leaves turn green and grass yellow after infection.
3. Inflorescence rot: the inflorescence part will show signs of rot, which will seriously affect the growth and greatly reduce the ornamental value.
Insect pests mainly include scale insects and thrips, among which scale insects are characterized by their activities on the back of leaves. When the damage is relatively serious, a layer of black mould will be induced on the surface of leaves. After touching with hands, they will feel very sticky and will not be wiped off gently. Thrips are small yellow insects, which can invade the pedicel and leaf stem. After being damaged, the leaves unfold red, and the abnormal flowers emerge.
1. Disease: cut off the diseased leaves in time, and spray Bordeaux solution or zineb.
2. Insect damage: take preventive measures at ordinary times. If you find any disease, you can wipe it with self-made washing liquid first, and spray it in the later stage if it is serious.
