When to plant spinach in Maine

Spinach
Sow outdoors in Portland
Mar 15–Apr 5

Across Maine the window opens between March 14 and April 4. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Portland
Mar 15–Apr 5
Fall planting, Portland
Aug 20–Sep 3
Last frost, Portland
Apr 26

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
PortlandMar 15–Apr 5
LewistonMar 14–Apr 4
BangorMar 23–Apr 13
South PortlandMar 15–Apr 5
AuburnMar 14–Apr 4
SanfordApr 4–Apr 25
BiddefordMar 28–Apr 18
WestbrookMar 15–Apr 5
SacoMar 15–Apr 5

Questions

When should I plant spinach in Maine?

In Portland, sow outdoors from March 15 to April 5. Across Maine the window opens between March 14 and April 4, 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 Maine

Spinach in other states

Frost dates for every city in Maine