When to plant Carrots in New Hampshire

In spring, from Apr 10 – June 1 in Dover to Apr 20 – June 15 in Lebanon.

In fall, from June 1 – July 10 in Claremont to June 15 – Aug 1 in Laconia.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Carrots planting dates by place in New Hampshire
PlaceSpringFall
ClaremontApr 20 – June 15June 1 – July 10
ConcordApr 20 – June 15June 1 – July 10
DoverApr 10 – June 1June 1 – July 20
KeeneApr 20 – June 15June 1 – July 10
LaconiaApr 10 – June 1June 15 – Aug 1
LebanonApr 20 – June 15June 1 – July 20
ManchesterApr 10 – June 1June 1 – July 20
NashuaApr 10 – June 1June 1 – July 20
PortsmouthApr 10 – June 1June 1 – July 20
RochesterApr 10 – June 1June 1 – July 20
SomersworthApr 10 – June 1June 1 – July 20

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for carrots.