1. Root frostbite: because the winter temperature is relatively low, the roots of this kind of plants may be frozen, so that its roots can not absorb nutrients from the soil to supply the plants for growth, so the leaves of the plants become black.
2. Improper watering: too much water will have a bad effect on the root of the plant, and the root of the plant will rot after a long time. The root can't give the leaf the nutrients it wants, so the leaf becomes lifeless and black
1. If the frostbite degree of the plant is still light, the blackened leaves can be cut off at this time, and then the plant can be kept in a warm place. If the frostbite is severe, you need to dig out the plant from the soil, then cut off its frozen roots, branches and leaves, and then replant it and put it in a warm place.
2. If it is found earlier, the plant can be placed in a place with good air circulation, so that the water in the basin soil will evaporate faster, and the plant will return to its normal appearance slowly. If a lot of leaves have turned black, dig out the plant from the soil, then cut off the rotten roots, disinfect it and replant it in the prepared soil.
