When to plant collard greens in Maine

Collard greens
Plant out in Portland
Mar 29–Apr 12

Across Maine the window opens between March 28 and April 18. Find your city below; the dates follow each town's own average last frost.

Plant out, Portland
Mar 29–Apr 12
Fall planting, Portland
Jul 23–Aug 6
Last frost, Portland
Apr 26

Plant out 2–4 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Collards handle both heat and frost better than most greens.

Collard greens planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
PortlandMar 29–Apr 12
LewistonMar 28–Apr 11
BangorApr 6–Apr 20
South PortlandMar 29–Apr 12
AuburnMar 28–Apr 11
SanfordApr 18–May 2
BiddefordApr 11–Apr 25
WestbrookMar 29–Apr 12
SacoMar 29–Apr 12

Questions

When should I plant collard greens in Maine?

In Portland, plant out from March 29 to April 12. Across Maine the window opens between March 28 and April 18, depending on the local last frost.

How is this date worked out?

Plant out 2–4 weeks before the last frost; sow again for fall 10–12 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Maine

Collard greens in other states

Frost dates for every city in Maine