What if the leaves of Michelia mollissima turn black?

1. Humid environment

(1) specific reasons: there are two possible situations. One is determined by the weather, the humidity of the environment is relatively large, the surrounding humidity is relatively humid. The second is caused by artificial watering. Too much water is poured at one time, resulting in stagnant water in the container.

(2) solution: if it is caused by climate, then we have no way to adjust it, we can only move it to a relatively dry place. In the second case, it is within the scope of our adjustment. Although it has a great demand for water, too much water will cause harm. Generally speaking, we should follow the principle of seeing dry and wet. The most important thing is that the amount of water must not be passed.

two。 Fertilizer problem

(1) specific reason: we all know that the concentration of fertilizer for most plants should not be too high. Otherwise, it will do harm to the roots. Among them, a very important external performance is the blackening of leaves. Then there is the question of quantity, even if the concentration is appropriate, it is not good to apply too much.

(2) solution: if this is the reason, then the concentration and amount of fertilizer should be adjusted and adjusted in time. Try to lower the concentration, and the frequency can be a little more. In addition, the quantity can not be too much each time.

3. Bacterial problem

(1) specific reason: there are some harmful bacteria, which may cause plant disease, and then the leaves turn black. This is also a very possible reason.

(2) solution: cut off infected, blackened leaves. Then, spray the symptomatic liquid. It is necessary to adjust the surrounding environment, even if it is too wet.