When to plant celery in Idaho

Celery
Plant out in Boise City
May 1–May 8

Across Idaho the window opens between April 13 and May 19. Find your city below; the dates follow each town's own average last frost.

Start indoors, Boise City
Jan 30–Feb 13
Plant out, Boise City
May 1–May 8
Last frost, Boise City
Apr 24

Start seeds indoors 10–12 weeks before the last frost; plant out 1–2 weeks after the last frost. Celery needs steady moisture all season.

Celery planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
Boise CityMay 1–May 8
MeridianMay 1–May 8
NampaMay 6–May 13
CaldwellMay 6–May 13
Idaho FallsMay 16–May 23
PocatelloMay 9–May 16
Coeur d'AleneApr 29–May 6
Twin FallsMay 7–May 14
Post FallsApr 29–May 6
RexburgMay 19–May 26
LewistonApr 13–Apr 20
EagleMay 6–May 13
KunaMay 1–May 8
StarMay 6–May 13
AmmonMay 16–May 23

Questions

When should I plant celery in Idaho?

In Boise City, plant out from May 1 to May 8. Across Idaho the window opens between April 13 and May 19, depending on the local last frost.

How is this date worked out?

Start seeds indoors 10–12 weeks before the last frost; plant out 1–2 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Idaho

Celery in other states

Frost dates for every city in Idaho