How to regulate flower temperature for normal growth

To grow flowers well, you first need to understand their temperature requirements, and then, according to your conditions, create as far as possible a temperature environment suited to their growth and development. In the northern regions, given the living conditions and heating situation, indoor temperatures in winter are generally rather low, so when cultivating high-temperature-loving flowers native to tropical and subtropical regions, you must do a good job of keeping them warm. For example, Michelia alba (white champaca) and Aglaia odorata (mock lime) must not be kept at a winter room temperature below 10°C.

Summer temperatures in the Beijing area are high, which is unfavorable for the growth of cool-loving flowers such as Cyclamen persicum (cyclamen), Fuchsia hybrida (fuchsia), and Schlumbergera truncata (crab claw cactus), so they should be placed under a ventilated, cool shade shed or in a corridor. Using temperature regulation to control the flowering period is fairly common in the north; for example, flower production departments use high temperatures to force Jasminum sambac (jasmine) to bloom: after the Start of Autumn, move the jasmine into a high-temperature greenhouse (room temperature 30-35°C), and in about 1 month it will bloom abundantly. For a robustly growing Prunus mume (plum blossom), after flower buds have formed, first subject it to a period of low temperature so the buds develop fully and enter dormancy, then move it into a room at 10-25°C; as the temperature rises, the buds gradually swell. About half a month before the intended blooming date, move it into a room at 20-25°C, and in about 10 days the buds begin to open.

Osmanthus fragrans (osmanthus) flower buds form from June to August, and the main factor affecting flowering is temperature. When the hot midsummer turns to cool autumn, the buds begin to swell; when the nighttime temperature drops below 17°C, the osmanthus will bloom. Taking advantage of this biological characteristic of osmanthus, if you want it to bloom earlier, you can put it in a cold room; if you want to delay flowering, you must raise the temperature to inhibit the swelling of the buds.