When to plant bok choy in zone 6b — planting calendar

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Showing USDA Zone 6B

Growing SeasonZone 6b

Last frost ~Apr 20First frost ~Oct 15Today

Start indoorsTransplant / sowHarvestFrost risk

MARAPRMAYJUN

Start indoors Mar 23 · Transplant Mar 30 · First harvest May 14 · Wrap by Jun 4

Last spring frostApr 20

Start seeds indoorsMar 23

Transplant outMar 30

First harvestMay 14

Last harvestJun 4

Fall succession sowAug 20

First fall frostOct 15

Why these dates work in zone 6b

Zone 6b's last spring frost averages Apr 20 and first fall frost Oct 15 — about 178 frost-free days. Bok Choy tolerates light frost, so you can set plants out ahead of the last-frost date and keep harvesting into the cooler fall. Starting seeds indoors 4 weeks ahead gives strong transplants ready the moment the soil warms. There's also room for a fall succession sowing around Aug 20 for a second harvest before frost.

Common questions

How long does bok choy take to grow in zone 6b?

Bok Choy matures in about 45–60 days from transplanting. In zone 6b that means setting plants out around Mar 30 and first picking around May 14.

Will bok choy survive frost in zone 6b?

Yes — bok choy tolerates light frost. In zone 6b you can set plants out a little before the last frost (around Apr 20) and keep harvesting past the first fall frost (around Oct 15).

Can I plant a second crop of bok choy in zone 6b?

Yes — in zone 6b there's time for a fall sowing around Aug 20 for a second harvest before frost.

For soil, spacing, pests and companion planting, see the full bok choy growing guide →