What if the leaves of Fugui bamboo turn black?

1. Water quality problems

(1) reason: the leaves are black, and the most likely reason is that there is something wrong with the watering. Specifically, if the water quality is alkaline, it may affect its absorption of nutrients, making its leaves appear black.

(2) solution: we'd better irrigate the plant with clean water, and we can also add some aqueous solution of compound fertilizer to it.

2. Disease problem

(1) reason: there is a disease that can cause blackening of plant leaves, called "brown spot", or "black spot". It is caused by a fungus and is more common. Generally speaking, blackening begins with the lower leaves. At the beginning of the disease, some dark brown dots appear on the surface of the leaves. As the disease progresses, these dots join together to form a large mass, and the color deepens. This disease can occur all year round, and it is the most serious and harmful in summer.

(3) solution: first of all, we have to cut off the diseased leaves and deal with them together. In addition, you can spray some chlorothalonil solution. Also, try not to use N-containing flower fertilizer when the temperature and humidity are high. At this time, it is best to apply a certain amount of phosphorus and potassium fertilizer.

3. Watering problem

(1) reason: if overwatering, this phenomenon may also be caused. The roots will suffer first and become rotten. Then, it will be shown in the leaves and may turn black.

(2) solution: adjust watering. Wait until the pot is dry before watering. If you don't do it, you don't have to water it for the time being. In addition, when pouring, try not to splash on the leaves.