1、 Infectious disease

Reason: if the maintenance is improper, thyme may be infected with diseases, such as iron rust, which is common. It will not only damage the leaves, but also affect the trunk, blacken the trunk, decay the branches, and even lead to plant death, which is more harmful

Solution: take corresponding precautions and pay attention to ventilation to avoid diseases. If the disease occurs carelessly, it is necessary to remove the diseased branches and trunks, and then spray corresponding chemicals

2、 Infected insects

Reason: if infected with insects, it may also cause the trunk to blacken, and the harm is also relatively large

Solution: when the number of pests is relatively small, manual capture or self-made agent spraying can be carried out first. However, generally, after the trunk is blackened, the situation is more serious and drugs need to be sprayed for treatment

3、 Excessive moisture

Reason: certain water is required during the growth of thyme, but if it is not applied according to the growth trend and the water is too much, it will lead to ponding and rot in the root, spread upward, affect the branches and stems, and lead to blackening of the trunk

Solution: control the application of water, promote the evaporation of water as soon as possible, and then remove the rotten roots