How to choose celery varieties and determine the sowing period?

Answer: For cultivation, first choose celery varieties with high yield, good quality, resistance to pests and diseases, wide adaptability and good marketability, such as Ventura from the United States, Dutch celery, Four Seasons celery, California King, Bailey and so on. In choosing the sowing period for celery, different regions are not the same. In northern regions, celery in greenhouses is generally raised as seedlings in early September, transplanted into greenhouses in mid-November, and can be marketed in January to February of the following year.