What to Do When Cymbidium sinense Leaves Turn Yellow? Cause Analysis and Solutions
Cymbidium sinense, also known as Baosui orchid, is one of China's traditional orchids and a rare variety among Chinese orchids. Nowadays it is one of the more popular Chinese orchids, and can be placed indoors as decoration or given to friends as a gift, which is also very suitable. Many people encounter yellowing leaves in the process of growing Cymbidium sinense. What is going on? Below, Qinnong Network will explain to everyone what to do when Cymbidium sinense leaves turn yellow.
As for what to do when Cymbidium sinense leaves turn yellow, we first need to know what causes the yellowing. Qinnong Network has summarized four aspects of the causes here, and then introduces the corresponding solutions according to these causes. Let us take a look together below.
1. Overwatering
When watering Cymbidium sinense, pay attention not to pour too much water at one time. If the water cannot be absorbed in the soil, it can easily cause root rot, and the leaves will naturally turn yellow. In severe cases, it can even cause the entire plant to die. The watering method should also be noted: do not pour directly from the top down, because this may cause water to flow into the tender buds and also lead to yellowing leaves.
Solution:
The main issue is the timing and amount of watering. Usually in winter and spring, watering around sunrise is best, and misting should also be used to increase air humidity to help Cymbidium sinense grow. In summer and autumn, water around sunset, and ensure the leaf surface dries before nightfall. When we find that the soil surface is somewhat dry, it is time to prepare to water. Do not let the soil stay dry for too long. When watering, it is better to pour along the edge of the pot.
2. Overfertilizing
Cymbidium sinense does not have a great demand for fertilizer during growth, so the frequency of fertilization and the amount each time should be controlled. If too much fertilizer is applied, it will cause nutrient excess in the potting soil, leading to root burn in Cymbidium sinense, and thus the leaves will turn yellow.
Solution:
Fertilization should be moderate, not too much. During the growing period, fertilize once a week. In autumn and winter, Cymbidium sinense grows slowly, so fertilizing once every 20 days is enough. When fertilizing, do not splash it onto the leaves. After fertilizing, pour a small amount of clean water to wash away residual fertilizer in the soil. At the same time, it is best to choose sunny days for fertilizing. Fertilizing on cloudy days may cause the risk of root rot.
3. Temperature Too Low
If Cymbidium sinense shows yellowing leaves in winter, then in addition to the above two causes, you should also consider whether temperature is the influence. Too low a temperature can also very likely cause Cymbidium sinense leaves to turn yellow, especially temperatures below zero.
Solution:
In winter, do not place Cymbidium sinense outdoors, and pay attention to keeping it warm. The most suitable temperature for Cymbidium sinense growth is 18°C~28°C. Below 10°C in winter, growth is slow and it enters dormancy. But the winter temperature should not be too high either. Above 25°C will affect Cymbidium sinense dormancy and affect the next year's growth.
4. Light
Light is a relatively difficult factor to control. Too strong or too weak light can both cause Cymbidium sinense leaves to turn yellow. Too strong light easily sunburns the leaves and causes sunscald. Excessive shading or long-term placement indoors will also affect the orchid's photosynthesis, causing yellowing leaves, poor growth and difficulty in blooming.
Solution:
Cymbidium sinense needs a certain amount of light, but cannot tolerate strong light. Sunlight before 9 a.m. every day is very helpful for the growth of Cymbidium sinense. After 9 a.m., it should be moved to a shaded place or shaded. Especially in summer and autumn, on sunny days there should be more than 70% shading.
The above is the summary from Qinnong Network on the causes and solutions for yellowing leaves in Cymbidium sinense, and we hope it can be of some help to everyone. Since ancient times, orchids have symbolized an unworldly, noble and elegant character. Therefore, growing a pot of orchids at home also symbolizes the owner's pursuit and yearning for this kind of character, and it is a favorite of many literati and refined guests.