When to plant garlic in Montana

Fall planting in Billings

Sep 16–Oct 21

Across Montana the window opens between August 15 and September 16. Find your city below; the dates follow each town's own average first fall frost.

Fall planting, Billings: Sep 16–Oct 21
Last frost, Billings: May 4

Plant cloves from 3 weeks before to 2 weeks after the first fall frost. Plant cloves pointy end up, about 2 inches deep. Roots grow before the ground freezes and leaves come up in spring.

Garlic planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

BillingsSep 16–Oct 21

MissoulaSep 10–Oct 15

Great FallsSep 10–Oct 15

BozemanSep 1–Oct 6

Butte-Silver BowAug 15–Sep 19

HelenaSep 9–Oct 14

KalispellAug 20–Sep 24

Questions

When should I plant garlic in Montana?

In Billings, fall planting from September 16 to October 21. Across Montana the window opens between August 15 and September 16, depending on the local last frost.

How is this date worked out?

Plant cloves from 3 weeks before to 2 weeks after the first fall frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Montana

Garlic in other states

Frost dates for every city in Montana