What is the blackening of camellia leaves?

1. Disease problem

(1) specific reasons: this is one of the most likely causes of blackening. This plant is susceptible to a disease called anthrax. After infection, as the situation gets worse, the leaves of the plant become more and more charred. Moreover, the situation of fallen leaves will be aggravated day by day.

(2) solution: if it is a disease problem, then first of all, we have to collect these blackened leaves and burn them together. In this way, if the source of infection is eliminated, the situation may be alleviated. Then, spray some more medicine, and the plant may slowly recover.

two。 Insect pest

(1) specific reason: this is also a very common reason. Any plant that is harmed by pests may have black leaves, and the same is true of this plant. After the harm is aggravated step by step, the blackened parts will become more and more serious. In this way, water transport will be inhibited, and the leaves will eventually dry and fall.

(2) solution: in this case, the treatment method is similar to the first one. First deal with the diseased leaves, and then spray.

3. Water problem

(1) specific reasons: as mentioned above, there are two situations. First, there is too much water, which leads to lack of oxygen in the roots, which later leads to blackening of the leaves. The second case is the quality of the water, which may also make the leaves black.

(2) solution: the corresponding measure in the first case is naturally to reduce the amount of water, and then add ventilation. For the second, some (FeSO4) solution can be added to the water.

4. Fertilizer problem

(1) specific reasons: there are also two cases, one is that the quantity is too much, and the other is that the concentration is too high.

(2) solution: in view of the above two different situations, the disposable fertilizer should not be too much and the concentration should be low. To put it simply, it can be summarized as "thin fertilizer and diligent application".