When to plant potatoes in New Hampshire

Sow outdoors in Manchester

Apr 2–Apr 16

Across New Hampshire the window opens between April 1 and April 16. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Manchester: Apr 2–Apr 16
Last frost, Manchester: Apr 30

Sow outdoors 2–4 weeks before the last frost. Plant seed potatoes once the soil reaches about 45°F. Shoots that come up before the last frost can be covered with soil.

Potatoes planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost

JanFebMarAprMayJunJulAugSepOctNovDec

ManchesterApr 2–Apr 16

NashuaApr 1–Apr 15

ConcordApr 10–Apr 24

DoverApr 5–Apr 19

RochesterApr 2–Apr 16

KeeneApr 16–Apr 30

PortsmouthApr 6–Apr 20

DerryApr 2–Apr 16

Questions

When should I plant potatoes in New Hampshire?

In Manchester, sow outdoors from April 2 to April 16. Across New Hampshire the window opens between April 1 and April 16, depending on the local last frost.

How is this date worked out?

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