1、 Insufficient water

1. Reason: the water demand of peppermint is relatively large, especially in its growing season. Therefore, if the amount of water is insufficient, its leaves will dry up

2. Measures: in view of this situation, it is necessary to supplement water in time, and the phenomenon of dry leaves will be easier to alleviate. Generally speaking, it is most appropriate to water according to the principle of dry and full pouring. At the same time, pay attention to humidification, and the surrounding environment should not be too dry

2、 The light is too strong

1. Reason: under too strong light, the leaves are very easy to dry. Especially in summer, if it is placed in direct sunlight, it is very common to dry and fall off

2. Measures: Generally speaking, the light at eight or nine o'clock at noon is the most suitable for it. It can't be illuminated by too strong light. The summer noon light must be shielded

3、 Disease causes

1. Cause: some diseases can also cause leaves to dry and fall off, such as anthrax, rust and so on

2. Measures: in view of this situation, it is necessary to first reduce the dried leaves to avoid infecting other parts. Then, even if Carbendazim and other drugs are used for treatment, the ventilation conditions also need to be guaranteed