Causes of yellowing of Cymbidium leaves and its control

Cymbidium is a kind of plant which is very suitable for potted plants, so it is widely planted by florists, but one of the most common problems in planting is that its leaves turn yellow for various reasons. In fact, the yellowing of hanging orchid leaves is mostly caused by factors such as fertilizer, water, temperature and so on. Next, the florist friends will come with the editor. Take it.

1. Thin, fat and yellowing

Hanging orchids have a high demand for fertilizer, but some flower farmers feel that they look like grass, so they tend to think that they don't need too much fertilizer. In fact, this is a wrong idea. The root transport system of Cymbidium is very developed, because it needs a lot of nutrients to grow tender leaves, and when there is not enough fertilizer, the new leaves will obviously turn yellow, so when we find this situation, mostly because the orchid is short of fertilizer, it can be solved by increasing fertilizer.

2. Stagnant water yellowing

The yellowing caused by stagnant water is a more serious one, which may be due to the poor permeability of the soil, and the irrigated water is easy to accumulate in the roots and form stagnant water. It may also be caused by overwatering, and the place where the orchid is cultivated is unable to discharge excess water. Most of the yellowing caused by this condition begins to change color from the leaf tip or both sides, and finally causes the whole leaf to turn yellow. At this time, in addition to timely drainage, but also to add some drier soil to mix.

3. Disease yellowing

The disease is basically encountered by plants, but it is not obvious at the beginning of the disease, and there are two kinds of diseases that cause the yellowing of Cymbidium. One is Botrytis cinerea, and the other is root rot, both of which show signs of leaf yellowing. The former starts from the back of the leaf, while the latter causes yellowing from the heel root. Root rot can be solved with 40% root rot, gray mold can be tried with pyrimidine, and the effectiveness of both is good.

4. Yellowing of light and temperature

This is what flower farmers are most likely to cause because of their own operation, and the harm is relatively small, as long as it is corrected in time. One is caused by temperature, the other is caused by strong light. Too high or too low temperature will lead to inhibition of chlorophyll growth in Cymbidium, resulting in yellowing of leaves. Strong light will directly affect the nutrition transport of Cymbidium, resulting in yellowing. Both as long as the corresponding adjustment on it, not a long time experience will not cause the disease of the orchid.

These are some of the common causes and treatments for yellowing of hanging orchids. The majority of florist friends must pay attention to them. The orchid itself is a highly adaptable plant, as long as we do some of the above points for attention, I believe we will have a good harvest.