When to plant celery 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

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Start indoors Feb 9 · Transplant Apr 6 · First harvest Jul 15 · Wrap by Aug 12

Last spring frostApr 20

Start seeds indoorsFeb 9

Transplant outApr 6

First harvestJul 15

Last harvestAug 12

Fall succession sowJul 2

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. 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 2 for a second harvest before frost.

Common questions

How long does celery take to grow in zone 6b?

Celery matures in about 100–120 days from transplanting. In zone 6b that means setting plants out around Apr 6 and first picking around Jul 15.

Will celery survive frost in zone 6b?

Yes — celery 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 celery in zone 6b?

Yes — in zone 6b there's time for a fall sowing around Jul 2 for a second harvest before frost.

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