1. When using the seeding method, because the seeds of Hibiscus are hard, it is necessary to scratch or corrode the skin to improve the germination rate. Generally, it is soaked in concentrated sulfuric acid for 5-30 minutes, and then rinsed with clear water before sowing. The suitable temperature for germination is 25~35℃, and it can germinate in 2~3 days. Some hybrids, especially new hawthorn varieties, have weak growth potential and need grafting propagation. Rootstocks can be selected from varieties with strong growth potential.

2, potted hibiscus flowers, need to change pots every spring, and trim and shape. Fusang is more fertilizer-tolerant, applying fertilizer 1 time every month in the growing period and applying phosphorus and potassium fertilizer 2-3 times in the flowering period. Insufficient light makes the buds fall off easily, and the flowers become smaller and the color is dim. Nanjing area must be moved indoors in winter.

3. Land selection and soil preparation: loose and weak acid soil with abundant sunshine, warm and humid climate, fertile soil and good drainage is selected.

4. Transplanting and transplanting seedlings: after rooting, put them on a pot, prepare pot soil with 4 parts of sandy loam and 65,438+0 parts of manure, mix them evenly, cover the drainage hole at the bottom of the pot with tiles, put base fertilizer at the bottom, then put them into the mixed soil to plant seedlings, water them 65,438+0 times a day, and place them in the sunny place for 2-3 years after shading.