Unlike many traditional European and New World vegetables, most Asian vegetables mature very quickly, and once ready to harvest must be picked within a day or so. Small regular sowings are required. Pak Choi (Bok Choy) and Chinese Cabbage (Wong Bok) are best sown in summer and autumn in cold areas, July to March in warm areas and all year in tropics. Sow the seed where the crop is to be grown, watering and feeding generously.
Sow 1 cm deep, thinning to 10 cm apart. Sow every few weeks from spring until late autumn. Expect germination in around 1 week at 21 deg. C. soil temperature.