When to plant spinach in Montana

Spinach
Sow outdoors in Billings
Mar 23–Apr 13

Across Montana the window opens between March 23 and May 2. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Billings
Mar 23–Apr 13
Fall planting, Billings
Aug 12–Aug 26
Last frost, Billings
May 4

Sow outdoors 3–6 weeks before the last frost; sow again for fall 6–8 weeks before the first frost. Spinach bolts as days lengthen. Early spring and fall are its seasons.

Spinach planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
BillingsMar 23–Apr 13
MissoulaMar 29–Apr 19
Great FallsMar 25–Apr 15
BozemanApr 14–May 5
Butte-Silver BowMay 2–May 23
HelenaMar 28–Apr 18
KalispellApr 19–May 10

Questions

When should I plant spinach in Montana?

In Billings, sow outdoors from March 23 to April 13. Across Montana the window opens between March 23 and May 2, depending on the local last frost.

How is this date worked out?

Sow outdoors 3–6 weeks before the last frost; sow again for fall 6–8 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Montana

Spinach in other states

Frost dates for every city in Montana