What if the leaves of Anthurium andraeanum turn black?

1. Degree of dryness and humidity

Mainly refers to excessive watering. This is a big reason for the blackening of plant leaves. Once overwatered, the soil and plants in the basin cannot absorb it, there will be stagnant water and the leaves will begin to blacken. Therefore, when watering, we should pay attention to whether there is stagnant water in the basin, as long as the soil is thoroughly watered, and the watering times should not be too frequent.

2. Improper fertilization

In the plant growth period of fertilization, may be used a high concentration and strong, because the plant itself is weak, so there will be root burning phenomenon, resulting in black leaves, as the saying goes, over-nutrition. Just pay attention to the use of fertilizer with low concentration when applying fertilizer.

3. Improper change of basin

When the plant is changing the basin, the root is injured due to improper operation technology. Basically, after it changes the basin, it goes through buffering to adapt to a new environment. After changing the basin, put the plants in a ventilated place, but do not shoot directly, but also pay attention to watering. After changing the basin, don't touch it first, just let it adapt to the new environment.

4. Diseases and insect pests

Generally speaking, when suffering from diseases and insect pests, the leaves will also be blackened, which is basically threatened by leaf spot disease, as long as it is caused by its long-term stay in the question and lack of ventilation. In order to reduce the number of diseases and insect pests, we must create a good growth environment for it to avoid diseases due to muggy and humid for a long time.

5. Lighting

There is another possibility-the problem of direct sunlight. Because it needs sunlight in the process of growth, but it is not directly exposed, it will not only affect its glossiness, so as to reduce the degree of beauty. In addition, it may also cause the leaves to blacken. So in the usual breeding process, let it accept astigmatism as far as possible.