What is the reason for the yellow leaves of orchids

There are many reasons for orchid yellow leaves, which may be the normal phenomenon of metabolism, stagnant water or lack of water in improper watering, strong light sunburn or lack of light in inappropriate light, thick fertilizer and root burning or lack of nutrients caused by wrong fertilization. it may also be caused by low temperature freezing injury and the impact of diseases and insect pests, so it is necessary to solve the problem.

1. Metabolism

The yellowing of the leaves of orchids is probably due to the fact that they are in the process of metabolism, so the leaves turn yellow and wither, so there is no need for special maintenance at this time, just let them grow normally and make the new leaves replace the yellowing old leaves.

2. Improper watering

Excessive watering causes stagnant water in the basin, or too little watering causes orchid growth without sufficient water, which will cause its yellow leaves. It should be watered moderately, water thoroughly after seeing the soil whitening, and be careful not to overwater.

3. Light discomfort

Strong light will burn the leaves of orchids and make them yellow, while lack of light will cause the lack of chlorophyll to start yellowing leaves. Put the orchids under scattered light and receive enough sunlight to keep the leaves green and healthy.

4. Wrong fertilization

In China, wrong fertilization is also one of the reasons for the yellowing of leaves. Excessive fertilization results in heavy fertilizer burning roots can not absorb nutrients, or insufficient fertilization without nutrients for growth, about half a month to carry out a thin fertilizer frequently to supplement nutrients.

5. Low temperature freezing injury

If the temperature is too low in winter, the orchids will suffer frost damage and the leaves will turn yellow. It is necessary to cut off the yellow leaves in time, and then do a good job of warming and keeping warm, so that the orchids can grow normally when the temperature is above 10 ℃.

6. Influence of diseases and insect pests

After suffering from diseases and insect pests, orchids will also appear yellow leaves, it is necessary to timely spray the corresponding liquid for the treatment of leaf spot, shell insects and other diseases and insect pests, and maintain a good ventilated environment to make them healthy and healthy.