When to plant Green beans in New Hampshire

In spring, May 10 – June 30.

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

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

Snap beans planting dates by place in New Hampshire
PlaceSpringFall
ClaremontMay 10 – June 30June 1 – July 10
ConcordMay 10 – June 30June 1 – July 10
DoverMay 10 – June 30June 15 – July 20
KeeneMay 10 – June 30June 1 – July 10
LaconiaMay 10 – June 30July 1 – Aug 1
LebanonMay 10 – June 30June 15 – July 20
ManchesterMay 10 – June 30June 15 – July 20
NashuaMay 10 – June 30June 15 – July 20
PortsmouthMay 10 – June 30June 15 – July 20
RochesterMay 10 – June 30June 15 – July 20
SomersworthMay 10 – June 30June 15 – 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 snap beans.