If there is mucus on the leaves of emerald tree, it means that it is a living insect, probably a scale insect or aphid. At this time, it is necessary to find out the insects to remove them in time, and remove the branches and leaves eroded by the insects, and spray insecticides for control.
1. Scale insect: it is one of the most common pests of Emerald tree, and it is harmful to many plants. If the quantity is not large, it can be removed manually and sprayed with garlic water or ash water to remove nymphs and larvae. Compared with pesticides, this way is non-toxic and harmless and will not recur, but garlic has a strong smell of water, which needs to dissipate in about a week.
2. Aphid: it is also a common flower pest. They will suck the juice of plants, causing the leaves to turn yellow and soft. Because of its small size and small quantity, it is not easy to find, so it needs to be observed carefully. If you want to eliminate them, you can spray them with washing powder and water, or you can use biological control.
3. Mites: most of them occur in high temperature climate in summer, but less in humid environment. Therefore, they need to move the plants to the ventilation place, and spray water on the leaves on time for humidification. In addition, pyridaben and nisolone can also be used for killing
