During the dormancy period of flowers, the room temperature should not be too high, otherwise it will affect the normal dormancy of plants, lead to excessive nutrient consumption, affect the growth and flowering of the next year, and even lead to death. Common flowers such as white orchid, Rhododendron, osmanthus, orange, etc. can survive through the winter when the room temperature is kept above 5 ℃, 8? 12 ℃ is the best; Michelia, Aglaia odorata, Laili, Fusang, etc., the room temperature is 10-15 ℃; jasmine, oleander, rose, fig, pomegranate, pine and cypress are not suitable for the high temperature, and they can survive through the winter when the room temperature is not lower than 0 ℃.
The supply of water and fertilizer should be strictly controlled for the flowers entering the dormancy period. Excessive watering can easily cause root rot and leaves to turn yellow and fall off. Therefore, in addition to the winter and spring varieties, such as guayeju, cyclamen, horseshoe lotus, upside down golden bell, Lingjian lotus, etc., which can continue to supply water according to needs, all the dormant flowers should be watered under control, such as Michelia, Riley, etc., especially the varieties with shade or fleshy roots, such as Rohdea japonica, Swiss cheese plant, Tieshu, orchid and other pot soil should be slightly dry compared with summer and autumn, others, such as Cactus of some flowers should be more controlled watering, as long as the soil is not dry. In addition, the dormancy flowers should pay attention to less or no fertilization, so as not to promote new shoots ahead of time, affect the next year's flowering or suffer from frost damage.
Some dormant flowers in winter can be combined with shaping when they are about to sprout in early spring, so as to cut off the long branches, thin branches, pest branches and over dense branches, so as to facilitate ventilation and light transmission, concentrate nutrients, and breed more and fuller flower buds. Some varieties, such as Riley, can leave the branches 20-25 cm, and cut the rest; for the branches too old, they can be cut from the base to stimulate it to produce strong new branches. Rhododendron, Camellia generally do not need to do large pruning, only a part of the right amount of pruning too dense, too long branches can be. 4. Pollution prevention: potted flowers are placed in the room for a long time, and a lot of smoke and dust often accumulate on the leaves, which is easy to cause the leaves to be polluted. At the initial stage, dark brown mildew spots will appear on the flowers and leaves. After a long time, a black soot like mist layer will be formed, which will affect the photosynthesis of the plants. At the same time, the growth of the flowers will be slow and the diseases will occur. Therefore, to keep flowers indoors, especially in the room heated by coal fire, attention should be paid to prevent dust pollution, and water close to room temperature should be used to wash the dust on the leaves.
