01
May
Lowest Temperature For Orchids. Although orchids do like it a little cooler at night just like people do. Orchids do best when nighttime temperatures drop at least 10 degrees. However light is probably the most important variable. Flowers may discolor below 45 degF.
Cold injury includes damage from temperatures above and below freezing. Maintain a temperature of 6075 F 1624 C in your home. In winter time this is not always practical to achieve temperatures quite this warm. The number of hours of light exposure and the intensity and quality of the light have a major impact on a plants growth and overall healthAdequate lighting is also critical in triggering the flowering process. Orchids do best when nighttime temperatures drop at least 10 degrees. Warm 80-90F days and 65-70F nights Intermediate 70-80F days and 55-65F nights and Cool 60-70F days and 50-55F nights.
The optimal day temperature is between 70F and 75F and it should be about 10F lower during the night.
Forty degrees is the low end of their temperature range. Daynight temperature differential is key to blooming. The number of hours of light exposure and the intensity and quality of the light have a major impact on a plants growth and overall healthAdequate lighting is also critical in triggering the flowering process. There are three temperature zones for orchids and each type of orchid has an ideal temperature zone. But occasional brief periods of temperatures above 100 F 38 C or drops even into the 30s 0 C will not harm most orchids as long as no frost forms on the leaves. However light is probably the most important variable.