The reason for the yellowing of orchid leaves

As one of the four gentlemen of flowers, orchids are deeply loved by the Chinese people from ancient times to the present. They are beautiful, indifferent, noble, elegant and virtuous symbols. They have been planted in aristocratic and literati circles, and have gradually developed ordinary families in recent years. But when we raise orchids, somehow the leaves of orchids turn yellow and distressed. Now I would like to analyze the reasons for the yellowing of some orchid leaves and how to solve the yellowing of orchid leaves, hoping to help the majority of orchid lovers!

First of all, orchids belong to fleshy roots, which are different from other flowers and trees. They like moist but not wet, ventilated and cool environment, and have requirements for climate, temperature, humidity, light, etc. Normal culture temperature is suitable for 15-25 ℃, light intensity is about 10000 lumens, roots need to be breathable, can not accumulate water, and do not like fertilizer very much. Only when we know something about the characteristics of orchids can we master the methods to raise orchids easily. The ways to avoid yellowing the leaves of orchids are as follows:

1, light, orchid bar like strong light, like a shady growth environment, but can not lack of sunlight, lack of light will affect photosynthesis, lack of nutrition leads to thin and yellow orchid leaves, excessive light burns will lead to orchid leaves macula, especially when the temperature is more than 30 ℃ degrees direct light is easy to yellowing.

Freeze-injured yellow leaves

2, diseases and insect pests, orchids suffer from fungi due to wounds or high heat and humidity caused by insects, and bacterial infections lead to carbon maggot disease, stem rot, soft rot and so on, which can also cause orchid leaves to yellow. generally, the roots begin to yellowing or yellow watery patches appear on the leaves, which we need to pay attention to, especially stem rot and soft rot, such as timely sterilization or removal of diseased plants and other corresponding measures. This article is only about orchid yellow leaves, not too much description of the specific symptoms of the disease, I have an article specifically elaborated before, you can refer to my previous articles to compare specific diseases!

3, metabolism, the growth of orchids needs to replace the old and the new with the growth of the plant. due to the need for new leaves, the old leaves will not continue to grow, but will quickly turn yellow and wither and fall off from the tip of the leaves. The leaves of this orchid are yellow caused by normal metabolism, so there's no need to worry.

New buds lead to yellowing of leaf beetles of old seedlings.

4, moisture, orchids like moist but not wet growth environment, air humidity about 50-90%, insufficient watering causes empty roots or lack of air too dry leaves, it will lead to orchid leaves yellowing. On the contrary, if there is too much watering, stagnant water in the basin and poor drainage, the roots of orchids will be anoxic and rotten, yellow leaves will appear, and even die. Watering should be carried out according to the drying condition of the basin soil, timely watering, not drying, watering thoroughly to avoid too dry or too wet.

5, fertilization, orchids do not like thick fertilizer, excessive fertilization is easy to cause fertilizer damage, black roots lead to orchid leaves yellowing and death, generally thin fertilizer is applied frequently, use less compound fertilizer, should choose safe slow-release fertilizer, slow-release fertilizer should be placed away from the orchid root, too close to the rhizome is easy to burn orchid leaves yellowing, all the use of non-nutritious hard medium plants, such as all planted with gold stone will be seriously short of water and nutrition It will lead to the starvation of orchids, which is characterized by young leaves and tender stems, which lead to the yellowing of the whole plant until death.

Physiological leaf tip yellowing and scorching tip

6. Plant materials, orchids are very important to the selection of plant materials. Whether the selection of plant materials has a direct impact on the survival of orchids is the knowledge that orchid beginner lovers must understand. Most orchids enthusiasts can not raise orchids well. Orchids are easy to die here, and they all cannot break through the concept of soil. Orchids can not be planted with soil, the soil is too fine, easy to solidify, watering is easy to accumulate water. As long as a stagnant water orchid root will rot and lead to orchid leaf yellowing and death, we should choose granular plant materials with stable particle characters, generally choose pine chestnut king and plant gold stone mixture, so that the water is good, no stagnant water, but also moisturizing, and the orchid root is breathable. Orchid bacteria and orchid roots have a good symbiotic environment, suitable for the growth of orchids, orchid leaves are not easy to yellow naturally. Author: Huang Xinlin, I will post orchid knowledge and pictures every day to take you to know more about orchids and teach you to grow orchids easily. If you don't understand orchids, you can always ask me or leave a message below. If you like, you can click on the upper right corner to collect or forward to help others!