1、 Sowing time

The sowing time of sunflower seeds is generally in spring, summer and autumn, which is not suitable for sowing in winter. Because the temperature in winter is low, it is easy to frostbite seedlings. Generally, sowing is carried out in April in Jiangsu, Zhejiang and Shanghai. At this time, the temperature is higher than 18 ℃, which is conducive to the growth of seedlings

2、 Seeding process

1. Pot soil preparation: sunflower is suitable to grow in loose and fertile soil. Generally, sandy soil can be used to mix and pile fertile soil, and a small amount of river sand can be added to provide certain drainage. After that, water should be poured to provide a humid environment

2. Seed selection: the seed of sunflower is very small, so it is not easy to distinguish its color, so it is generally not necessary to select. If you want to improve its germination rate, you can soak the seeds properly. Soak the seeds in clear water, take them out and dry in the shade after a day

3. Sowing: make the surface of the basin more flat. Then sprinkle the seeds on it and cover it with a layer of fine soil. The thickness of the soil should not exceed two centimeters. After sowing, put it in a bright place

4. Follow up maintenance: sunflowers will germinate only when the temperature is above 18 ℃, so the temperature must be well controlled. At the same time, keep the soil moist, which is more conducive to germination. It can be covered with a layer of film to keep warm and moisturize