Brassica rapa chinensis. 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 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 (albeit slowly) 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.
How To Grow, Timing: Direct sow short rows every three weeks in spring, and again in late summer for fall harvest. Pac Choi does best in cool soil. Optimal soil temperature for germination is 20-25 Celsius.
How To Grow, Seeding: Sow 3-4 seeds 5mm-1cm deep in each spot you want a plant to grow. Thin to the strongest plant at a spacing of 15-20cm between plants in rows 30-45cm apart.
How To Grow, Growing: Ideal pH: 6.0-6.8. 1 cup of complete organic fertilizer will provide sufficient nutrition to 3m of row. Choi Sum is harvested just before it flowers, so keep a close watch on each row. Pac Choi can be harvested at any stage, but if you want full-sized plants, watch for signs of bolting. Flower buds will appear at the centre of each plant, and a stem will form quickly as the plant turns from urn-shaped into a tall cone. Harvest as quickly as possible once flower buds are visible. Keep plants well-watered throughout their growth.
approx 485 seeds
35-45 days
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