What are the reasons for the yellowing of Phalaenopsis leaves?
If you want to know the reasons for the yellowing of Phalaenopsis leaves and related information about green plants, let's learn about it together below.
What are the reasons for the yellowing of Phalaenopsis leaves?
Phalaenopsis is an epiphytic orchid with high ornamental value. Moreover, Phalaenopsis plants can also grow by absorbing nutrients from the air. Therefore, many people still cultivate Phalaenopsis. When cultivating Phalaenopsis, the leaves often turn yellow. So what causes the leaves of Phalaenopsis to turn yellow? How to deal with it? Let's take a look together now!
Excessive sunlight
Reason: Light is very important for the growth of Phalaenopsis, but if the duration of sunlight is too long or the light is too strong, it can easily cause the leaves of Phalaenopsis to turn yellow. Because if the light is too strong, the leaves of Phalaenopsis cannot withstand it, and the water evaporates too quickly, which can severely burn and cause yellowing of the leaves. The yellowing of Phalaenopsis leaves mainly occurs on the side exposed to light, with the upper leaves turning yellow-green and the lower leaves on the shaded side remaining normal.
How to handle: If the leaves are yellowing, it is necessary to control the light in time. Reduce the duration and intensity of light exposure for Phalaenopsis. No sunlight is allowed during strong light periods such as noon and summer. For leaves that have been exposed to sunlight, they can gradually recover in the weak light of the morning and afternoon. However, if there is sunburn, it cannot be restored because the sunburned tissue is necrotic.
Dry air
Reason: Phalaenopsis prefers to grow in a humid environment. Even in winter, the humidity should be maintained at around 70%. When flowering, the humidity should not be lower than 50%. If the air roots of Phalaenopsis are exposed for too long, the lower old leaves will start to turn yellow due to low humidity and lack of water, and the leaves will become significantly thinner.
How to handle: There are not many other symptoms for leaves turning yellow due to drought. At this time, it is necessary to cut off the yellow leaves in time and supplement water promptly, which can effectively alleviate the yellowing phenomenon. But the most important thing is prevention, watering and spraying the surrounding plants.
Root rot
Reason: Another major cause of yellow leaves in Phalaenopsis is root rot. Root rot is very common, and if the leaves of Phalaenopsis are yellow, drooping, brownish-yellow, and accompanied by rot, it is generally caused by root rot. After the roots of Phalaenopsis rot, they cannot absorb nutrients, and the leaves will turn yellow due to malnutrition.
Treatment: For root rot, it is necessary to remove the pot, cut off the rotten roots, disinfect, and then replant. The main reasons for root rot in Phalaenopsis may be overwatering, poor soil permeability, or over-fertilizing. Therefore, we should pay more attention to using new culture medium to plant after dealing with root rot, cut off the flower spike, and let them slow down.
The above is a brief introduction to the reasons and treatment methods for the yellowing of Phalaenopsis leaves. That's all for today's introduction. This article is for reference only and I hope it helps you!
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