When to plant potatoes in Idaho

Potatoes
Sow outdoors in Boise City
Mar 27–Apr 10

Across Idaho the window opens between March 9 and April 14. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Boise City
Mar 27–Apr 10
Last frost, Boise City
Apr 24

Sow outdoors 2–4 weeks before the last frost. Plant seed potatoes once the soil reaches about 45°F. Shoots that come up before the last frost can be covered with soil.

Potatoes planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
Boise CityMar 27–Apr 10
MeridianMar 27–Apr 10
NampaApr 1–Apr 15
CaldwellApr 1–Apr 15
Idaho FallsApr 11–Apr 25
PocatelloApr 4–Apr 18
Coeur d'AleneMar 25–Apr 8
Twin FallsApr 2–Apr 16
Post FallsMar 25–Apr 8
RexburgApr 14–Apr 28
LewistonMar 9–Mar 23
EagleApr 1–Apr 15
KunaMar 27–Apr 10
StarApr 1–Apr 15
AmmonApr 11–Apr 25

Questions

When should I plant potatoes in Idaho?

In Boise City, sow outdoors from March 27 to April 10. Across Idaho the window opens between March 9 and April 14, depending on the local last frost.

How is this date worked out?

Sow outdoors 2–4 weeks before the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Idaho

Potatoes in other states

Frost dates for every city in Idaho