1、 Seeding and seedling raising method

1. Seed selection: the seedlings cultivated from small seeds will also be very small and their growth will be weak. Therefore, we must choose large seeds, so that the seedlings cultivated will be relatively strong and their growth in the later stage can be guaranteed. Among these seeds, there will be some shriveled ones. Select them. The simple way is to pour them directly into clean water, soak them for about ten minutes, and throw away those floating on them

2. Sprouting: soak the selected seeds in normal temperature water for about two to three days, and change the water once a day. Take out the seeds and put them on plastic paper. Sprinkle water with a small watering can every morning or evening to keep the seeds moist. After a week, they will sprout

3. Sowing: the selected substrate must be deep and breathable, preferably sandy soil or loess. Dig out a small ditch and put the seeds horizontally in it

2、 Seedling raising time

The subtropical region is selected from early to late March, and the temperate region can be selected from late March to mid April