When to plant celery in zone 3b — planting calendar

Growing SeasonZone 3b

Last frost ~May 6First frost ~Oct 22Today

Start indoorsTransplant / sowHarvestFrost risk

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Start indoors Feb 25 · Transplant Apr 22 · First harvest Jul 31 · Wrap by Aug 28

Last spring frostMay 6

Start seeds indoorsFeb 25

Transplant outApr 22

First harvestJul 31

Last harvestAug 28

Fall succession sowJul 9

First fall frostOct 22

Why these dates work in zone 3b

Zone 3b's last spring frost averages May 6 and first fall frost Oct 22 — about 169 frost-free days. Celery 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 10 weeks ahead gives strong transplants ready the moment the soil warms. There's also room for a fall succession sowing around Jul 9 for a second harvest before frost.

Common questions

How long does celery take to grow in zone 3b?

Celery matures in about 100–120 days from transplanting. In zone 3b that means setting plants out around Apr 22 and first picking around Jul 31.

Will celery survive frost in zone 3b?

Yes — celery tolerates light frost. In zone 3b you can set plants out a little before the last frost (around May 6) and keep harvesting past the first fall frost (around Oct 22).

Can I plant a second crop of celery in zone 3b?

Yes — in zone 3b there's time for a fall sowing around Jul 9 for a second harvest before frost.

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

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