Vol. IX · No. 40 Brackwater Seed Library Wednesday, 30 September 2026
The Seed Almanac
Fig. 26. Pak choi ‘White stem’. Brassicaceae.

Pak choi ‘White stem’

Brassica rapa subsp. chinensis · Vegetable · No. 26

Sow under cover
—
Sow outdoors
May–Aug
Harvest
Jun–Oct
Germination
5–10 days
Spacing
20 cm in the row, 30 cm between rows
Days to harvest
40–60 from sowing
Sun
Sun or part shade
Seed saving
Hard

100 seeds per packet
5 packets on the shelf

Months for Pak choi ‘White stem’
JFMAMJJASOND
OutdoorsMayJuneJulyAugust
HarvestJuneJulyAugustSeptemberOctober

Notes

Sow after midsummer to avoid bolting. Crosses with turnip and Chinese cabbage; needs large populations.

Saving seed · Hard

Biennial or wind-pollinated. Seed comes in the second year or needs 20+ plants to stay true.

  1. Grow at least 20 plants of this variety.
  2. Biennials: store or overwinter roots, replant in March.
  3. Tell us before you start — we pool hard lots between members.

Same family · Brassicaceae

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