35-45 days-Mild green leaves are supported by thick, sweet, white stalks that are mild and juicy. In summer, plant Taiwan Pac Choi seeds in short rows and harvest them promptly before it bolts. Plant again at the end of summer for fall and early winter harvests. Taiwan Pac Choi seeds do not need warm soil to germinate, and they will grow into winter if given some frost protection. Try growing it under a cloche tunnel or cold frame and harvest until about December. Then start new rows around the end of February. Taiwan Pac Choi is great raw or cooked in stir-fries and soups.