Cress is the tender stems and leaves of the Umbelliferae plant Cress, which is a biennial herb producing umbelliferous. Celery is native to the Mediterranean coast. It has a long history of cultivation in China and is widely distributed. It is produced in most areas of the country. Xuanhua in Hebei, Weixian in Shandong and Shangqiu in Henan are all famous producing areas of celery . Available in all seasons. Cress has small roots, high stalks, solid, green stalks, thick fibers, light fragrance, crispy texture, and many edible parts. The quality requirements of celery: the size is neat, without old stalks, yellow leaves and soil, the petiole has no rust spots, insect damage, the color is bright green or white, and the petiole is rich and tender.