How to Care for Cymbidium Grandiflorum in Winter
As a star variety in the winter flower market, Cymbidium grandiflorum has become the preferred choice for New Year's flowers with its elegant bloom. However, its maintenance requires a higher demand for temperature and humidity, especially in the management of the flowering stage, which requires professional skills. This article will systematically analyze the entire process of overwintering maintenance from temperature control to water and fertilizer management.
Core Elements of Winter Environmental Control
Precise Control of Day-Night Temperature Difference
When maintaining a growth range of 10-25°C, special attention should be paid to keeping the temperature not lower than 5°C at night. Adjusting the southern window sill temperature with double curtains can create a day-night temperature difference of 5-8°C, effectively extending the single bloom duration to 20 days.
Graduated Management of Light Intensity
Implement full sunlight from December to the following February, using a lux meter to monitor and achieve 15000-25000Lux. From March onwards, use gauze curtains to filter strong light and prevent new leaves from burning. Rotate the flower pot 15 degrees every 10 days to ensure even light exposure.
Water and Fertilizer协同 Management Plan
Construction of an Intelligent Irrigation System
Use the bamboo stake test combined with a substrate moisture meter to maintain 40-60% moisture content. It is recommended to use rainwater or RO pure water, adding 2ml/L of citric acid monthly to adjust the pH to 5.8-6.5. Set a layer of ceramsite in the bottom tray to achieve indirect humidification.
Optimization of Nutrition Supply Cycle
Apply monopotassium phosphate (1000 times solution) during the budding stage, foliar spraying every 15 days. Immediately switch to N-P-K=18-18-18 slow-release fertilizer after the flowers fade, combined with EM bacterial agents to improve the substrate flora. newly purchased plants need to stop fertilizing and observe for 30 days.
Strategies for Coping with Special Weather Conditions
Handling Dry Environments in the North
Equip an ultrasonic humidifier to maintain over 60%RH, avoiding fogging humidification during the 11-14 o'clock flowering period. In rooms with heating, set up insulating pads to keep the bottom of the pot 30cm away from the heat source.
Preventive Measures for Rainy Conditions in the South
In consecutive rainy conditions, supplement light for 4 hours/day using full-spectrum plant lights 50cm away from the leaf surface. Spray mancozeb 800 times solution before the rainy season to prevent (T-J) disease, and lay volcanic stones on the substrate surface to enhance breathability.
Through a three-dimensional regulation system of temperature, light, and water-fertilizer, combined with regional maintenance strategies, it is possible to achieve continuous blooming of Cymbidium grandiflorum for over 120 days. It is recommended to establish a maintenance log, recording daily environmental parameter changes, and gradually forming a personalized management plan.