Celery: celery has strong cold tolerance and is suitable for growing in fertile soil. In winter, the temperature in the small arch shed must be moderate and the soil is fertile, which is suitable for celery growth.

Coriander: Coriander is a cold-resistant vegetable, and its growth temperature is about 12 degrees. In winter, the temperature in the small arch shed is about 10-20 degrees. So it is suitable for planting coriander.

Leek: Leek does not require high light, and the temperature in the small arch shed in winter is less than the outdoor light, which is suitable for greenhouse culture in winter.