Hibiscus usually propagates by cutting in spring and blooms in autumn.
The cutting method is: when the temperature in the region is stable at 15 ℃, the sprout is selected, and the condition of selecting branch is 1-2-year-old robust branch. Cut and grow the selected branch about 15-20cm. When cutting, predict the row spacing of the plant, insert the small stick into it predictably, and then insert the branch of Hibiscus from the hole. The length of the small stick inserted into the soil is preferably 10-15cm. After inserting, cover the soil and fill the water immediately after cutting, and do not apply any base fertilizer.
The courtyard is relatively wide, so the cutting density can be different according to seedling transplanting or direct transplanting.
In the cultivation of seedling transplanting, cutting can be carried out according to the different density of seedling transplanting according to the nature of flowering in the year of cutting.
After the second year, the annual germination is carried out according to the different density of seedlings, to ensure that the growth of Hibiscus has enough nutrition and water, so as to facilitate the growth of more and larger flowers.
The depth of the cutting ditch is required to be about 15cm, and the upper end of the cuttings shall be kept until the soil layer grows 3-5cm. After cutting, the soil shall be flattened, compacted and watered in time.
Generally, the cuttings can take root and germinate about 30 days after cutting, use plastic film for heat preservation and moisture preservation, and after autumn, the cuttings can be planted in sand bed in less than one day and watered in time.
The heat preservation agricultural film shall be covered, and the temperature after covering shall be kept at 18-25 ℃. About 85% relative humidity, after rooting.
