In general, the propagation of the flower is mainly by sowing, with a small number of cuttings. The sowing is more than that at the end of August and the beginning of September, when the climate is gradually cool. The culture soil is made up of 6 rotten leaf soil and 4 river sand. It is directly sown in "shallow basin" or "shallow seedling". It is not covered with soil. The water is supplied by "basin bottom soaking method". The rear cover of the sowing is sealed with glass or plastic cloth, and it is maintained at 13-15 ℃, and the seedling emerges one week later.
Remove glass and plastic cloth in time after emergence to facilitate ventilation and prevent falling. Gradually see light, so that the seedlings grow and thrive, room temperature maintained below 20 ℃. When the seedlings grow two true leaves, they are divided into pots.
The growth temperature of the flower is about 10 ℃. If long-term stem and leaf development is luxuriant, and the basin soil humidity is too high and sultry, it will make the plant stem rotten. In order to reduce the temperature, shade measures are often taken at noon to create a cool and ventilated environment. Especially from May to June after flowering in spring, we should do well in ventilation and shade at noon, which is good for seed development and maturity.
Pu Baohua likes warm and humid environment, but it is forbidden to over wet the potted soil and over water it when it blooms. Generally, water it when the potted soil is dry. If it is in the greenhouse, it is better to often spray water to increase the air humidity. Watering can not directly wash plants, such as water accumulation in leaves and buds, easy to cause rot. In the pre flowering growing season, fertilizer and water should be applied once every 10 days (10 times of dilution), and in the initial flowering stage, phosphorus fertilizer should be added as the main fertilizer. Fertilization should not allow the fertilizer and water to pollute the leaves, so as to avoid rotten heart and rotten leaves.
Pubaohua has strict requirements on soil, and the soil is not suitable for cultivation. Should choose loose, permeability is better, drainage unobstructed rich humus sandy soil. In addition, a small amount of bone meal or basic fertilizer should be added to the soil, and the soil should be disinfected before use.
Proper light can promote the flowering of the flower, but it can also lead to early falling. It should be noted that the indoor maintenance should be shaded before October, and it is not necessary to shade from October to march of the next year. After flowering, direct sunlight should be avoided.
