Santoh round leaved yellow pak choi is closely related to bok choi. The Chinese vegetable belongs to the cabbage family, Brassica rapa.
Pak choi can be used in salads or stir-fries as a baby leaf, or used in a variety of Oriental dishes as a cooked vegetable when semi-mature or as fully-grown heads. It grows best in a sunny position in a fertile soil. The fast-growing Pak choi is ready to harvest in 30 days from sowing as baby leaf, or between 45-75 days as semi-mature to full-size heads.
My seedlings were protected in the mini polytunnel and one of the wooden framed wire boxes to stave off slugs and snails. Once established, they were out in the open and enjoying the warm early autumn days.