Sowing: Collect seeds when the seeds are fully mature from July to September. After collecting, dry them in a dry place indoors in time. After the peels crack, take out the seeds, dry them and store them to prevent mildew and oil production. In early March, soak the stored seeds in 70°C water for 12 hours, rub off the waxy layer on the surface of the seeds with alkaline water, wash them with clean water, then warm the wet sand to 20°C for germination storage. After mid-March, drill sowing begins after the seeds have exposed their radicles. Generally, the spacing between rows is 3-5cm × 30-40cm, and it can also be sown in borders. According to the moisture content, the soil should be sown with sufficient moisture and the soil thickness should be 2-3cm. The seeding rate is about 10kg/mu, the germination rate is about 70%, and the seedling yield is more than 50,000 plants/mu.

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