Winter Orchid Temperature Management

There are many kinds of orchids in China, and the degree of cold resistance is different, so there is no freezing injury when the temperature is above 0 ℃. In order to raise orchids in the Yangtze River basin, you only need to put the orchids under the porch facing south from the wind. When there is a severe cold wind and snow, you can temporarily enter the house and move out on a sunny day. The southern provinces raise orchids to survive the winter, because the frost-free period is long, the winter temperature does not appear 0 ℃, and there is no worry about frost prevention. Orchid cultivation in the north lasts for a long time over the winter, but every family has heating facilities, and orchids can enter the house. The key is not how to prevent frost but how to prevent boredom. The practice of raising orchids shows that orchids often die of boredom and freeze in winter. The purpose of reasonably warming orchids in winter is not to prevent freezing, but to increase the vegetative growth period. Chinese orchid usually at a temperature of 15 ℃, plus sufficient light, the appropriate humidity will enter the vegetative growth. This growth condition is only 6-8 hours a day. Winter heating can be divided into two periods of time.

If the weather is fine in winter, the temperature in the orchid room can exceed 15 ℃, but the room temperature decreases in cloudy, rainy, windy and snowy weather. At this time, the room temperature should be heated and illuminated to keep the room temperature at 15e. No need to heat up at night, just keep it for 5 ℃. Heating can be carried out in late autumn and early winter in order to promote the full maturity of new plants in that year. However, from the middle of December to the end of January, there is no need to heat up, keeping the room temperature no less than 5 ℃, leaving its vegetative growth in a very slow state. From February onwards, humidification, heating, full light, so that orchids enter the growth period ahead of time. After heating, the new buds germinated ahead of time, and the new buds were generally unearthed after 45 days of heating. The plant can be grown after another 90 days. By the middle of June, the second new bud was unearthed again, thus achieving the effect of growing two batches of new seedlings in one year. When heating in winter, you should pay attention to adding light, but you must not keep heating 24 hours a day so that there is no temperature difference. In addition, heating should not be too high, more than 25 ℃ is harmful but not beneficial.