Reason: The main reason for the blackening of the leaves of the turtle back bamboo is that it has suffered from freezing injury. It likes a warm growth environment and cannot stand the cold climate in winter. Once the temperature is very low, the turtle back bamboo will find it difficult to adapt, and large areas of black and brown spots will appear on the leaves. If it is not controlled all the time, it will cause the death of the whole plant.
Solution: If signs of frostbite are found, immediate treatment is needed to prevent the disease from spreading to the whole plant.Cut off the rotten part in time to ensure that the cut surface is completely white.Move the turtle back bamboo to a warm room, control watering, keep the pot soil dry, do not fertilize first, wait for a period of time to recover by itself.
Reason: In the process of maintenance, if you water too much, it will cause a lot of water at the root, which will rot later, affecting the normal transport function, causing the leaves to turn yellow and black.
Solution: Pay attention to watering and fertilizing in the usual maintenance, control the dosage, and never give too much water and fertilizer.Take the rotten plants out of the flowerpot, cut off the rotten roots, smear the incision with carbendazim, and then re-plant, pay attention to water and fertilizer control in the later period.