When to plant onion seeds and when to plant onion seeds.

1. Autumn planting time: sow in early September of the first year, overwinter with seedlings, sow in the first half of May of the second year, harvest before winter, overwinter in cellar or open field, draw lots for flowering in the third year, and harvest seeds in the second season. From early May to late June, the seedlings planted can be classified as shallots; It can also be used to plant furrow onions in flat beds (pinch onions) or narrow row spacing, which can be used as autumn onions before and after long summer, or as early spring croissants after wintering.

2. Spring planting time: Sow in early spring after soil thawing, supply as shallots before hot summer, or harvest as dried shallots or furrows in the year after planting. It can also be used as a horny onion or as a seed plant to keep in winter.

3. Summer planting time: it is usually planted from late July to early August, so it is also called green onion. The plants were larger when overwintering that year. The vernalization process is easy to complete in the next spring, with early germination and fast bolting and flowering. Generally, chopped green onion is listed after it is collected.