What is the yellowing of the leaves of the orchid?

One-leaf orchid, also known as big leaf evergreen, bamboo leaf plate and so on, is a kind of plant of Liliaceae. It has a very high ornamental value, and the rhizome of one-leaf orchid can also be used as medicine, and it is also widely used in our country, which has the effect of promoting blood circulation, dispelling blood stasis and relieving cough. However, when we plant one-leaf orchid, the leaves often turn yellow. So what about the yellowing of the leaves of the orchid? Let's take a look at it with the editor.

1. Lighting reasons

Light is very important for the growth of Cymbidium. Appropriate light can promote the photosynthesis of leaves and improve the ornamental value of Cymbidium. But the light must not be too strong, because the leaves of a leaf orchid are very intolerant of direct sunlight, and if they are exposed to strong light, the leaves will be burned and yellow leaves will appear. Therefore, we should pay attention to maintain the environment of scattered light, cut off the burned leaves, and then water them properly. In summer and other strong light environment, we must do a good job of shading to ensure the normal growth of one-leaf orchid.

2. Overwatering

One-leaf orchid has a large demand for water and likes to grow in a more humid environment. But we must also pay attention to control the amount of watering, not too much watering, if too much watering leads to stagnant water in the basin, then it will seriously inhibit the breathing of the root of a leaf orchid. As a result, yellow leaves appear in the leaves. We should maintain the good permeability of the soil, do a good job of loosening the soil regularly, drain too much water in time, and cover the rain well in the rainy season. When watering, we should take dry and wet as the principle, while ensuring sufficient water for the growth of a leaf orchid, do not produce stagnant water.

3. Excessive fertilization

The growth ability of one-leaf orchid is relatively strong, so in the growth process of one-leaf orchid, the demand for fertilizer is not very large. Therefore, many flower growers do not control the amount of fertilizer when applying fertilizer, and it is often easy to apply too much fertilizer, resulting in fertilizer damage and root burning. And the leaves will also burn roots and yellow leaves because of fertilizer. If the fertilization is excessive, the fertilizer should be washed by the flood in time and the concentration should be diluted. For the plants that produce fertilizer damage, the plants should be removed in time, cut off the rotten roots and disinfected, and then replanted in the new soil.

4. Pest damage

In the cultivation of one-leaf orchid, although the one-leaf orchid has strong disease resistance. But it is easy to be harmed by red spiders and other pests, red spiders mainly harm the leaves of a leaf orchid, sucking the sap of the leaves, resulting in leaf yellowing. Therefore, we should do a good job in pest control and regularly spray insecticides to kill insects. And often observe the situation on both sides of the plant leaves, wipe the leaves with clean water, keep the leaves in a clean and shiny state, and also achieve the purpose of preventing insect pests.

The above is a brief introduction to how the leaves of Yilan turn yellow. That's all for today's introduction. This article is for reference only. I hope it can help you all.