How to Care for Orchids in Winter
A guide to share some knowledge about whether orchids are susceptible to frost and how to care for orchids in winter, along with introductions to the precautions for orchid cultivation in winter. Detailed information is provided below.
Are Orchids Susceptible to Frost?
Orchids are susceptible to frost. Their growth temperature ranges between 15°C and 25°C. When the temperature drops below 5°C or exceeds 30°C, the plant's growth will stop and enter a dormant period. Moreover, it is best to maintain a temperature of around 15°C during orchid propagation to aid seedling growth.
Orchid Winter Care Methods
The first consideration for orchid overwintering is temperature, which should not be lower than 5°C. Orchids are short-day plants, but due to low temperatures in winter, they need to be placed in a sunny location to promote photosynthesis and assist in bud differentiation. Additionally, reducing watering can help them overwinter safely.
Temperature: In winter, orchids should be moved indoors earlier and placed in a well-ventilated, shaded area for care. However, since winter sunlight is weak, they can be exposed to some light in winter and early spring.
Watering: In winter, orchids require less water and evaporation is slow, so watering can be reduced, with a frequency of about every 7 days.
Sunbathing: Orchids can be exposed to sunlight in winter. Since it's cold, orchids should receive as much light as possible to increase growth temperature and enhance cold resistance.
Overwintering in the North: In northern winters, orchids must be protected from frost. Necessary insulation measures should be taken to ensure daytime temperatures above 15°C and nighttime temperatures above 5°C. For spring orchids, a low-temperature treatment is applied in winter, keeping the room temperature around 0°C and placing them in the sun for 1-2 months to ensure normal blooming in spring.
Preventing Frost Damage to Orchids in Winter
1. In winter, avoid placing orchids outdoors where they can be affected by cold currents. Move them to a sunny indoor location, possibly placing the pot in a closed balcony to ensure adequate sunlight.
2. After moving orchids indoors in winter, the room temperature should be adjusted to between 5-15°C. The temperature should not be too high, as excessive heat can slow down stem growth and impair bud development.
Precautions for Orchid Cultivation in Winter
1. Choosing the right room for overwintering orchids is important. Ensure it has plenty of sunlight, and the temperature should not drop below 1°C to prevent frostbite. Use a heater when it's too cold.
2. The orchid pot should not remain moist for an extended period in winter, as this can lead to root rot. After watering, place the pot in a well-ventilated area to dry in the sun until the soil looks slightly dry.
3. Reduce watering in winter as the evaporation of water is slow, and the orchid's internal water circulation is not smooth, leading to easy waterlogging and rot. Water the orchid only when the soil is dry to provide sufficient water for blooming.
4. Orchids require plenty of sunlight and frequent ventilation during winter care. This can kill pests and diseases, aid in overwintering, and result in more blooms.
The above information introduces orchid winter care methods, whether orchids are susceptible to frost, and precautions for orchid cultivation in winter, offering a comprehensive understanding and reference for you!