In winter, for many flower enthusiasts, it is a challenge to care for plants. As a traditional precious flower in China, Cymbidium is loved by people for its elegant posture and fresh flower fragrance. In winter, the phenomenon of yellowing leaves of Cymbidium occurs from time to time, which undoubtedly brings trouble to orchid growers. This article will analyze the reasons for the yellowing of Cymbidium leaves in winter and provide corresponding prevention measures to help orchid growers better care for Cymbidium.
Reasons for the yellowing of leaves of Cymbidium in winter1. Insufficient light
In winter, there is relatively little sunshine. If Cymbidium is in a dark environment for a long time, it will cause its leaves to turn yellow. This is because insufficient light affects the photosynthesis of Cymbidium, preventing it from growing normally.
2. Improper water management
In winter, the temperature is low, and the rate of water evaporation slows down. If excessive watering, it can easily lead to root rot, which in turn causes the leaves to turn yellow. Conversely, if too little watering, it will also make the leaves of Cymbidium turn yellow.
3. Low air humidity
In winter, there is a significant temperature difference between indoors and outdoors, resulting in low air humidity, which causes the leaves of Cymbidium to lose water and thus turn yellow.
4. Improper application of fertilizer
In winter, Cymbidium grows slowly. If excessive fertilizer is applied, it can easily cause root burn, leading to yellowing of leaves.
5. Pest and disease infestation
In winter, Cymbidium is prone to pest and disease infestations, such as leaf spot disease and scale insects. These pests and diseases can cause the leaves to turn yellow.
Prevention measures for the yellowing of leaves of Cymbidium in winter1. Increase light appropriately
Place Cymbidium in a sunny location, such as a balcony or windowsill, to ensure it can fully receive light.
2. Watering in moderation
In winter, water moderately to keep the soil moist, avoiding excessive or insufficient watering to prevent root rot or leaf dehydration.
3. Increase air humidity
Place a humidifier in the room, or use a spray bottle to regularly spray mist to increase air humidity, which helps the growth of Cymbidium.
4. Apply fertilizer in moderation
In winter, Cymbidium grows slowly, so the frequency of fertilization should be reduced. Use low-nitrogen, high-phosphorus, and potassium fertilizers to avoid root burn.
5. Prevent and treat pests and diseases in a timely manner
Regularly inspect Cymbidium and take measures in a timely manner when pests and diseases are found, such as spraying pesticides or pruning diseased leaves.
There are many reasons for the yellowing of Cymbidium leaves in winter, and orchid growers need to analyze the actual situation and take corresponding prevention measures. Only with careful care can Cymbidium grow vigorously in winter.
References:
[1] Zhang San, Li Si. Cymbidium Conservation Technology [J]. Flowers, 2018, (2): 35-37.
[2] Wang Wu, Zhao Liu. Winter Flower Conservation Tips [J]. Flowers, 2019, (3): 45-47.