When to Plant Zucchini in Montana: May 11–May 25

When to plant zucchini in Montana

Sow outdoors in Billings

May 11–May 25

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 1–3 weeks after the last frost. Two plants are plenty for most families. Pick fruit at 6–8 inches.

Zucchini planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

BillingsMay 11–May 25

MissoulaMay 17–May 31

Great FallsMay 13–May 27

BozemanJun 2–Jun 16

HelenaMay 16–May 30

KalispellJun 7–Jun 21

Questions

When should I plant zucchini in Montana?

In Billings, sow outdoors from May 11 to May 25. 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 1–3 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.