When to plant cucumbers in Maine

Cucumbers
Plant out in Portland
May 10–May 17

Across Maine the window opens between May 9 and May 30. Find your city below; the dates follow each town's own average last frost.

Start indoors, Portland
Mar 29–Apr 5
Plant out, Portland
May 10–May 17
Sow outdoors, Portland
May 3–May 17
Last sowing for a harvest
Jul 23
Last frost, Portland
Apr 26

Start seeds indoors 3–4 weeks before the last frost; plant out 2–3 weeks after the last frost; sow outdoors 1–3 weeks after the last frost. Cucumbers rot in cold soil. Sow when the soil is at least 65°F.

Cucumbers planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
PortlandMay 10–May 17
LewistonMay 9–May 16
BangorMay 18–May 25
South PortlandMay 10–May 17
AuburnMay 9–May 16
SanfordMay 30–Jun 6
BiddefordMay 23–May 30
WestbrookMay 10–May 17
SacoMay 10–May 17

Questions

When should I plant cucumbers in Maine?

In Portland, plant out from May 10 to May 17. Across Maine the window opens between May 9 and May 30, depending on the local last frost.

How is this date worked out?

Start seeds indoors 3–4 weeks before the last frost; plant out 2–3 weeks after the last frost; sow outdoors 1–3 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Maine

Cucumbers in other states

Frost dates for every city in Maine