Prepare a flowerpot, add appropriate soil into it, and then dig a small hole with your fingers or other tools. The depth is about 2-3cm. Plant 4-5cm seeds of green onions, and then cover them with soil. When sowing, keep a certain distance between them. After sowing, water a proper amount of water and put it in a warm place for curing. After about 3-4 weeks, green onions It will grow to 15 to 20 cm, and then it can be harvested
When buying onions for food, buy fresh onions with full roots and roots, preferably with a small amount of soil on the roots. Cut down the green onion root with a small section of green onion, keep about 7cm of the green onion part, then plant the green onion root in the soil, and then pour some water on it, you can harvest it in a few weeks.