Bok Choy in Zone 2a & 2b
Brassica rapa subsp. chinensis
When to plant bok choy in zone 2b
Zones 2a and 2b share the same average frost dates in our data, so this page covers both.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Bok Choy tolerates either.
| Start indoors | Apr 15–Apr 22 |
|---|---|
| Direct sow / transplant outside | May 20–May 27 |
| Estimated harvest | Jul 9–Jul 16 (~50 days after planting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1 ft.
Bok choy is one of the fastest vegetables you can put in the ground, ready in under two months, and its crunchy white stalks and tender leaves work in everything from stir-fries to soups. It's also one of the quickest to ruin if you plant it at the wrong time of year.
How bok choy fits zone 2's season
Zone 2b's frost-free window runs about 104 days, from May 20 to September 1. Bok Choy needs about 50 days from sowing to first harvest.
Good companions
- Carrot: Non-competing root/leaf pairing.
- Onion: Onion scent may help mask bok choy from pests. (usually zones 3-10, so not a pairing for zone 2b)
Where to buy bok choy seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing bok choy" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 2b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Bok Choy in USDA zone 2b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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