When to plant green beans in Montana

Sow outdoors in Billings

May 11–Jun 1

Across Montana the window opens between May 11 and June 20. Find your city below; the dates follow each town's own average last frost.

Sow outdoors 1–4 weeks after the last frost. Bush beans ripen all at once, so sow a new row every two to three weeks.

Green beans planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

BillingsMay 11–Jun 1

MissoulaMay 17–Jun 7

Great FallsMay 13–Jun 3

BozemanJun 2–Jun 23

HelenaMay 16–Jun 6

KalispellJun 7–Jun 28

When should I plant green beans in Montana?

In Billings, sow outdoors from May 11 to June 1. Across Montana the window opens between May 11 and June 20, depending on the local last frost.

How is this date worked out?

Sow outdoors 1–4 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.