Platycodon grandiflorum generally blooms and bears fruit in August-65438+10. At this time, you can pick and collect the seeds inside. Planting time is mostly in winter and spring, from June165438+1October to June 65438+1October and March-April of the following year. This plant is mainly sown in winter, and the seeds often germinate in spring to ensure the orderly emergence of seedlings. 2010-June 2065 438+00 Select the seeds of Platycodon grandiflorum with full seeds, soak them in warm water at 30℃ for 8 hours, take them out, wrap them with wet cloth, and store them in a cool place at 25-30℃. After that, filter with warm water every day to keep it moist. Generally, the seeds will germinate after 5 days, and then they can be planted.

Second, select seeds to accelerate germination.

Platycodon grandiflorum is generally planted in places with deep soil layer and good drainage. In order to provide certain nutrients, a certain amount of ring fertilizer, cake fertilizer and calcium superphosphate can be applied before planting, and then deep ploughing and leveling can be carried out to make a flat border of 1 meter. If it is planted at home, just prepare flowerpots and soil.

Third, soil preparation and matching

Sprinkle platycodon grandiflorum seeds on the soil surface, then cover with a layer of fine soil and pour enough water. Put it in a cool and ventilated place and germinate after 15-20 days. Keep a certain humidity and avoid light before germination. Don't bask in the sun after the seedlings grow, so as not to be burned by strong light.