Reason: Because purple bamboo likes humid environment, it is easy to cause yellow leaves due to overwatering.It is very afraid of water, watering too much will cause its roots can not breathe, leading to root rot, resulting in leaf yellowing.And too little watering, the plant is not drought tolerant, will also make it insufficient water, resulting in yellow leaves.
Treatment: If it is caused by overwatering, put it in a ventilated place to let the water evaporate in time.Rotten roots need to be pruned in time.If it is caused by too little watering, you only need to increase the frequency of watering.How to water black bamboo reasonably, we should first judge whether black bamboo is short of water.When it is short of water, the leaves will curl a little, at this time, it should be watered in time to make up for the water, the leaves will stretch quickly.In hot summer, pay attention to more water replenishment and less watering in winter to prevent freezing in the basin.
Reason: The nutrition of the purple bamboo can not keep up with or the fertilizer is too sufficient, which may make the leaves of the purple bamboo turn yellow.
Treatment method: The principle of "less fertilizer and frequent application" should be adopted for fertilization of Phyllostachys nigra, and nutrients should be scientifically supplemented for Phyllostachys nigra.If fertilizer damage causes yellow leaves, it is necessary to wash the soil with a large amount of water to wash away the excess fertilizer.If it is serious, the roots of the bamboo should be dug out and cleaned, and then planted in new soil.If the yellow leaves are caused by too little fertilization, it is necessary to increase the frequency and amount of fertilization appropriately to ensure 2-4 times a year.
Reason: Purple bamboo is fond of sunlight, and it cannot be prevented from receiving sunlight just because it likes a humid environment.Lack of light will make its leaves yellow.
Treatment: It is recommended to move the black bamboo to a place with sufficient light, and do not leave it in a dark place for a long time.
Reason: Placing black bamboo in a poorly ventilated area will reduce its photosynthetic efficiency, causing its leaves to turn yellow.
Treatment method: a ventilated place should be selected for cultivating black bamboo.If it is a potted plant, it should be placed by the window so that it can be ventilated and receive sunlight at the same time.
