When to plant pumpkins in New Hampshire

Pumpkins
Sow outdoors in Manchester
May 14–May 28

Across New Hampshire the window opens between May 13 and May 28. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Manchester
May 14–May 28
Last sowing for a harvest
May 30
Last frost, Manchester
Apr 30

Sow outdoors 2–4 weeks after the last frost. For Halloween pumpkins, count back the variety's days to maturity from late September.

Pumpkins planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
ManchesterMay 14–May 28
NashuaMay 13–May 27
ConcordMay 22–Jun 5
DoverMay 17–May 31
RochesterMay 14–May 28
KeeneMay 28–Jun 11
PortsmouthMay 18–Jun 1
DerryMay 14–May 28

Questions

When should I plant pumpkins in New Hampshire?

In Manchester, sow outdoors from May 14 to May 28. Across New Hampshire the window opens between May 13 and May 28, depending on the local last frost.

How is this date worked out?

Sow outdoors 2–4 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for New Hampshire

Pumpkins in other states

Frost dates for every city in New Hampshire