Zone 7a covers 30 days of last-frost dates. We measured Fayetteville, AR at Mar 31 and Ogden, UT at Apr 30. Give us your town or ZIP and we'll use ten years of daily lows recorded at your own coordinates instead of the middle of that range.
Why these dates work in zone 7a
Zone 7a's last spring frost averages Apr 13 and first fall frost Nov 12 — about 213 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 30 for a second harvest before frost.
Common questions
How long does celery take to grow in zone 7a?
Celery matures in about 100–120 days from transplanting. In zone 7a that means setting plants out around Mar 30 and first picking around Jul 8.
Will celery survive frost in zone 7a?
Yes — celery tolerates light frost. In zone 7a you can set plants out a little before the last frost (around Apr 13) and keep harvesting past the first fall frost (around Nov 12).
Can I plant a second crop of celery in zone 7a?
Yes — in zone 7a there's time for a fall sowing around Jul 30 for a second harvest before frost.
For soil, spacing, pests and companion planting, see the full celery growing guide →