When to plant leeks in Maine

Leeks
Plant out in Portland
Apr 12–Apr 26

Across Maine the window opens between April 11 and May 2. Find your city below; the dates follow each town's own average last frost.

Start indoors, Portland
Feb 1–Feb 15
Plant out, Portland
Apr 12–Apr 26
Last frost, Portland
Apr 26

Start seeds indoors 10–12 weeks before the last frost; plant out up to 2 weeks before the last frost. Plant leeks deep in a trench and fill it in as they grow to get long white stems.

Leeks planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
PortlandApr 12–Apr 26
LewistonApr 11–Apr 25
BangorApr 20–May 4
South PortlandApr 12–Apr 26
AuburnApr 11–Apr 25
SanfordMay 2–May 16
BiddefordApr 25–May 9
WestbrookApr 12–Apr 26
SacoApr 12–Apr 26

Questions

When should I plant leeks in Maine?

In Portland, plant out from April 12 to April 26. Across Maine the window opens between April 11 and May 2, depending on the local last frost.

How is this date worked out?

Start seeds indoors 10–12 weeks before the last frost; plant out up to 2 weeks before the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Maine

Leeks in other states

Frost dates for every city in Maine