① it is advisable to sow from late August to early October. The seedlings should be transplanted once when they grow 2-3 true leaves, and then when they grow 4-5 leaves.
② when the seedlings grow 5 leaves, remove the top buds to promote the germination of lateral buds, and generally retain 3-4 lateral buds. During the growth period, the axillary buds germinated at the base should be removed in time to avoid nutrient consumption.
③ during the growth period, the basin soil should be kept moist. In addition to sufficient watering in summer, it is also necessary to regularly spray water on the leaf surface and the ground to increase humidity and reduce temperature.
④ during the growth period, the thin liquid fertilizer was applied once every 10 days until the flowering. Spray 0.2% potassium dihydrogen phosphate to the leaves once after the flower bud appears color. The times of fertilization should be reduced in the flowering stage, and phosphate fertilizer should be applied after autumn.
⑤ from the slow seedling, it should be placed in a sunny and well ventilated place for maintenance, and the direction of potted flowers should be often rotated. When the temperature is over 25 ℃, the leaves will wither, and the room temperature for overwintering should be kept between 10 ℃ and 15 ℃.
⑥ when flowering, move the plant to a colder place at 7-8 ℃ for maintenance, which can prolong the flowering period.
