What is the reason why the leaves of orchids turn yellow and dry?

Orchids generally refer to Jianlan, Youlan, Huilan and Qiulan, etc. They are a common ornamental plant and are also very easy to cultivate. However, some people often encounter the problem of yellowing and drying leaves due to negligence in management. So what is the specific reason? Let’s learn more about it below.

1. Normal weed withdrawal

Orchid is a perennial herb with a normal lifespan of about 3-5 years. After reaching the end of its lifespan, the orchid will quickly wither and die. This is a normal shedding phenomenon for orchids. The symptoms are that the entire leaf quickly turns yellow, starting from the bottom, outermost leaf beetles and leaf tips of the orchid plant, from the outside to the inside, and from top to bottom. Over time, the leaves gradually turn into yellow-brown and brown until they wither.

2. Improper watering

Orchids like a humid growing environment. If they are in a state of water shortage for a long time or the air humidity is low, yellow leaves will appear. In addition, when too much water accumulates at the bottom of the orchid pot, it will affect the entry of oxygen. In an oxygen-deficient state, the roots of orchids cannot absorb nutrients normally, which will also cause their leaves to turn yellow and dry.

3. Air drying

Orchids need a relatively humid growing environment. Too dry air is also one of the reasons why the leaves of old seedlings turn yellow and dry. Therefore, regular ground watering or setting up water trays are necessary maintenance measures for growing orchids at home.

4. Improper fertilization

Fertilization is essential for the growth of orchids, but too much or too little fertilizer can also harm them. When too much fertilizer is applied, the salt in the fertilizer will accumulate in the soil and damage the orchid roots, causing the leaves to turn yellow. The solution is to rinse the potting soil with plenty of clean water to reduce the fertilizer concentration. When there is insufficient fertilizer, the orchid's leaves will turn yellow due to lack of necessary nutrients. At this time, fertilizer should be added appropriately, but avoid excessive amounts to avoid causing further damage.

5. Temperature discomfort

18-30℃ is the best maintenance temperature for orchids. The hot summer temperature can easily cause the orchid leaves to turn yellow. Similarly, frost damage is likely to occur if the temperature is too low, and the symptom is still yellow leaves. The solution is relatively simple, that is, in the high summer temperatures, shade and cooling measures should be taken, and in the winter, the plant can be moved to a warm room for maintenance.

6. Impact of pests and diseases

Some diseases and pests can directly damage the leaves and roots of orchids, causing damage to their physiological functions and causing the leaves to turn yellow.

In general, when dealing with the problem of yellowing and drying of orchid leaves, you need to have enough patience and carefulness. The key is to figure out the cause of the occurrence, and then it will be easier to solve.