The seeds collected and stored in the first year were artificially germinated in the second spring. The soil was clear soil with pH between 6.5 and 7.0. Add fertilizer (mature sesame cake, bean cake, etc.) and mix evenly. Soak in water for 3-5 days (it's better to sprinkle a layer of sand on the surface of mud), and then add water for 3-5 cm deep. After the water is clear, sprinkle the seeds that promote the buds in it. According to the growth of seedlings, add water and change water in time, until the seedlings grow into small leaves (floating leaves) before transplanting.
When pingpengcao was transplanted, the row spacing of each plant was 10 cm and the plant spacing was 15-20 cm, and the management of seedling stage was strengthened. When the plant grows to 4-6 floating leaves (more than 8 cm wide), it can be planted. The method of planting is one plant per cylinder (1 plant per square meter). If it is planted in a large area of ornamental area and the soil is fertile, one plant per square meter can be planted. When the storage temperature of pingpengcao seeds is 3 ~ 5 ℃, the results are better, and the germination rate of pingpengcao seeds in the next year is more than 80%.
Asexual propagation is based on underground stem propagation and branch propagation. Propagation is carried out from March to April. The tubers with main buds are cut into 6-8 cm long tubers and lateral buds into 3-4 cm long tubers, which are used as propagation materials. The ramet propagation is carried out from May to June. The tuber with main bud is cut into 6-8 cm long, then the yellow leaves and some old leaves are removed, and some adventitious roots are reserved for planting. The plants propagated by the ramet quickly enter the growth stage under the condition of sufficient nutrients, that is, they can bloom and bear fruit in the same year.
