Orchids, as traditional ornamental plants in our country, are loved by orchid enthusiasts for their elegant shape and fresh aroma. In the process of maintenance, the problem of drying and yellowing of orchid leaves often plagues many orchid enthusiasts. This article will focus on this issue, analyze the reasons for the drying and yellowing of orchid leaves in detail, and provide corresponding solutions to help orchid enthusiasts better care for orchids.
Reasons for the drying and yellowing of orchid leaves1. Insufficient water
Orchids prefer a humid environment. If watering is not proper, it can easily lead to insufficient water, which can cause leaves to dry and turn yellow, specifically manifested as too much or too little watering.
2. Insufficient lighting
Orchids need ample scattered light. If they are kept in a dark environment for a long time, it can lead to insufficient photosynthesis in the leaves, resulting in drying and yellowing.
3. Soil problems
Soil that is too dry or too wet can affect the growth of orchids. Dry soil can make it difficult for roots to absorb water, while soil that is too wet can lead to root rot.
4. Diseases and pests
The drying and yellowing of orchid leaves may also be caused by diseases and pests, such as powdery mildew and aphids.
5. Insufficient nutrition
During the growth of orchids, if there is a lack of necessary nutrients, it can also lead to leaves drying and turning yellow.
Solutions to the problem of drying and yellowing of orchid leaves1. Reasonable watering
Watering orchids should follow the principle of "watering when dry and keeping the soil moist." Water when the soil surface is dry, and maintain soil moisture. In hot summers, you can increase the frequency of watering; in cold winters, reduce the frequency of watering.
2. Adjusting lighting
Place orchids in a place with ample scattered light and avoid direct sunlight. If lighting is insufficient, you can adjust the position or use artificial light sources.
3. Improving soil
Choose well-draining soil, such as decomposed leaf soil and perlite, and maintain good soil drainage to prevent waterlogging.
4. Controlling diseases and pests
Regularly inspect orchids and deal with diseases and pests in a timely manner. You can use insecticides and fungicides for prevention and control.
5. Fertilizing
Based on the growth stage of orchids, fertilize appropriately. During the vigorous growth stage, compound fertilizer can be applied, and during the flowering stage, phosphorus and potassium fertilizers can be applied.
There are many reasons for the drying and yellowing of orchid leaves. Orchid enthusiasts should address specific reasons for resolution. By reasonably watering, adjusting lighting, improving soil, controlling diseases and pests, and fertilizing, it is believed that orchids will gradually recover their vitality.
References:
[1] "Orchid Cultivation Techniques", China Forestry Publishing House, 2015.
[2] "Prevention and Control of Orchid Diseases and Pests", China Agricultural Publishing House, 2018.