- You will get 200 Seeds of Canton pak choi Chinese Cabbage BokChoy Napa Cabbage Siu Bok Choy Vegetable Seeds. - Bok choy (American English), pak choi (British English), or pok choi (Brassica rapa subsp. chinensis) is a type of Chinese cabbage. - Chinensis varieties are popular in southern China and Southeast Asia. - Being winter-hardy, they are increasingly grown in Northern Europe. - How to Plant. - Start transplants inside 4 to 6 weeks before last frost date. - Transplant 6 to 12 inches apart in rows 18 to 30 inches apart. - Use the closer spacing for smaller varieties. - Plant direct-seeded spring crops OE to oe inch deep and about 1 inch apart in rows 18 to 30 inches apart. - Thin to 6- to 12- inch spacing. - Or set transplants out at 6- to 12-inch spacing. - Mulch fall crops heavily and provide adequate moisture to avoid premature bolting.