Seedling raising and planting time of onion

The onion seedlings are the best in the first half of September.

It is harmful to raise onion seedlings too early, because the seedlings grow fast at high temperature. Before winter, plants grow too fast and consume a lot of nutrients. Once the temperature changes from warm to warm, onion seedlings are easy to spring. The next spring, when the onion begins to grow, it will enter the bolting stage in advance.

Once the onion bolting occurs, it means that the bulb quality and yield of onion are seriously reduced, and the competitiveness of bolting onion in the market will be greatly reduced.

It is also harmful to raise onion seedlings too late. Before winter, the vegetative body of onion seedlings is too small, the cold tolerance is reduced, and the seedlings can't stand the cold and freeze to death. In the second spring, it is easy to appear the phenomenon of lack of seedlings and broken ridges. According to the experience of planting onions in the past, in Huanghuai area, the time of onion seedling raising is the earliest, which will not be earlier than the Bailu solar term or later than the National Day.