How to Care for Cymbidium in Winter
As an important member of the national orchid family, Cymbidium is deeply loved by orchid enthusiasts for its elegant flower posture. Winter is a critical turning point in the growth cycle of Cymbidium, and low temperatures have a direct impact on the survival of the plant and the quality of flowering in the following year. This article will systematically analyze the complete care plan for Cymbidium in winter from four core dimensions: temperature control, water management, potting soil care, and lighting needs.
Temperature Control Techniques for Cymbidium in Winter
Identification of Critical Temperature
When the ambient temperature drops below 10°C, Cymbidium will activate its self-protection mechanism and stop growing. It is recommended to use an electronic thermometer for real-time monitoring and maintain the care temperature within the range of 12-18°C.
Implementation of Insulation Measures
In the northern regions, the plant should be moved indoors before the first frost, choosing a south-facing window with plenty of sunlight; in the southern regions with brief low temperatures, double-sided thermal insulation film can be used to cover the plant, combined with a foam box base for insulation.
Water Management Plan for Cymbidium in Winter
Adjustment of Watering Frequency
The amount of water during the dormant period should be reduced to 1/3 of the growing period, using the "pinching pot method" to judge: when the weight of the growing medium is reduced by 60%, water slowly along the pot wall on sunny and warm afternoons.
Water Quality and Temperature Control
Use tap water that has been left to stand for 24 hours, and the water temperature should match the room temperature. A small amount of EM bacteria solution can be added to prevent root rot, with a ratio of 1:1000.
Key Points of Potting Soil Care for Cymbidium in Winter
Disinfection of Growing Medium
Water the roots with a 800x solution of carbendazim every month, alternating with avermectin to control scale insects. The proportion of pine bark should be >40%, ensuring good aeration of the substrate.
Monitoring Root Health
Regularly check the bottom drainage hole of the pot, and if the crystal head growth stops, stop watering immediately, and if necessary, replace 1/3 of the bottom soil.
Light Optimization Strategy for Cymbidium in Winter
Light Intensity Management
Receive 3-5 hours of scattered light daily, using shade nets to filter out strong midday light. LED grow lights are recommended to be set at 3000-5000 lux, with 4 hours of supplemental lighting daily.
Creating Day-Night Temperature Difference
Maintain a temperature of 12-15°C at night and increase it to 18-20°C during the day, using a temperature difference of about 5°C to stimulate nutrient accumulation.
By scientifically controlling temperature, precisely controlling water, regularly maintaining potting soil, and rationally utilizing lighting, not only can Cymbidium safely survive the winter, but it can also store sufficient energy for spring germination. It is recommended to record the plant's condition every two weeks, adjusting the care plan flexibly according to regional climate characteristics to keep Cymbidium vibrant in the cold winter.