When to plant daffodil bulbs in Idaho

Fall planting in Boise City

Sep 23–Nov 4

Across Idaho the window opens between August 27 and September 28. Find your city below; the dates follow each town's own average first fall frost.

Fall planting, Boise City: Sep 23–Nov 4
Last frost, Boise City: Apr 24

Plant from 4 weeks before to 2 weeks after the first fall frost. Daffodils root best when they go in a few weeks before the ground freezes. Deer and rodents leave them alone.

Daffodil bulbs planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

Boise CitySep 23–Nov 4

MeridianSep 23–Nov 4

NampaSep 15–Oct 27

CaldwellSep 15–Oct 27

Idaho FallsSep 3–Oct 15

PocatelloSep 13–Oct 25

Coeur d'AleneSep 20–Nov 1

Twin FallsSep 11–Oct 23

Post FallsSep 20–Nov 1

RexburgAug 27–Oct 8

LewistonSep 28–Nov 9

EagleSep 15–Oct 27

KunaSep 23–Nov 4

StarSep 15–Oct 27

AmmonSep 3–Oct 15

Questions

When should I plant daffodil bulbs in Idaho?

In Boise City, fall planting from September 23 to November 4. Across Idaho the window opens between August 27 and September 28, depending on the local last frost.

How is this date worked out?

Plant from 4 weeks before to 2 weeks after the first fall frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.