1、 The reason why the leaves turn black

1. The light is too strong: the green rose is not sun resistant, especially in summer. If it is placed in a place with direct light, the leaves will be sunburned after a long time, and black spots will appear on the leaf surface and gradually spread to the whole leaf

2. Temperature discomfort: its growth has certain requirements for the environment. It is not resistant to high temperature and cold. If the temperature is not controlled during high temperature in summer or low temperature in winter, it will damage the plant and be prone to yellow and black leaves

3. Infected with diseases and insect pests: if the environment provided during the management period is not suitable, such as high temperature, high humidity and poor air permeability, it is easy to be infected with diseases and insect pests, which will hinder the growth of the whole plant, produce various poor growth phenomena, and the plant will die in serious cases

2、 Treatment methods

No matter what the reason is, the blackening of leaves should be treated as soon as possible to avoid further deterioration. If the sun is too strong, you should move to a cool place and spray water frequently to moisturize, so that you can recover slowly. If the temperature is not suitable, pay attention to temperature control in late summer and winter. More ventilation and cooling should be provided in summer, and it should be moved indoors in winter to control the temperature above 10 degrees. If you are infected with diseases and pests, you should remove the diseased leaves as soon as possible and spray bactericide for sterilization to avoid infection. In addition, the maintenance environment should be changed in the later stage