FrostCal

When to Plant Brussels Sprouts in New Hampshire

In a typical New Hampshire location, start seeds indoors Mar 15 – Mar 29, then transplant outdoors Apr 12 – Apr 26. Across the state, the outdoor planting window starts as early as Mar 31 in Salem and as late as Apr 23 in Berlin.

Method Start indoors, then transplant
Days to maturity 90–110 days

Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost.

Brussels Sprouts Planting Dates by City

CityStart indoorsTransplant
ManchesterMar 12 – Mar 26Apr 9 – Apr 23
NashuaMar 12 – Mar 26Apr 9 – Apr 23
ConcordMar 20 – Apr 3Apr 17 – May 1
East ConcordMar 20 – Apr 3Apr 17 – May 1
Derry VillageMar 12 – Mar 26Apr 9 – Apr 23
DoverMar 15 – Mar 29Apr 12 – Apr 26
RochesterMar 12 – Mar 26Apr 9 – Apr 23
SalemMar 3 – Mar 17Mar 31 – Apr 14
MerrimackMar 12 – Mar 26Apr 9 – Apr 23
KeeneMar 26 – Apr 9Apr 23 – May 7
DerryMar 12 – Mar 26Apr 9 – Apr 23
PortsmouthMar 16 – Mar 30Apr 13 – Apr 27
BedfordMar 3 – Mar 17Mar 31 – Apr 14
LaconiaMar 12 – Mar 26Apr 9 – Apr 23
LebanonMar 21 – Apr 4Apr 18 – May 2
WindhamMar 15 – Mar 29Apr 12 – Apr 26
ClaremontMar 26 – Apr 9Apr 23 – May 7
PelhamMar 15 – Mar 29Apr 12 – Apr 26
SomersworthMar 12 – Mar 26Apr 9 – Apr 23
LondonderryMar 3 – Mar 17Mar 31 – Apr 14
DurhamMar 20 – Apr 3Apr 17 – May 1
HamptonMar 16 – Mar 30Apr 13 – Apr 27
BerlinMar 26 – Apr 9Apr 23 – May 7
ExeterMar 16 – Mar 30Apr 13 – Apr 27

Showing the 24 most populous of 24 New Hampshire cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all New Hampshire cities.

Frequently Asked Questions

When should I plant Brussels sprouts in New Hampshire?

In a typical New Hampshire location, start seeds indoors Mar 15 – Mar 29, then transplant outdoors Apr 12 – Apr 26. Across the state, the outdoor planting window starts as early as Mar 31 in Salem and as late as Apr 23 in Berlin.

When is the last frost in New Hampshire?

The average last spring frost in New Hampshire ranges from April 21 in Salem to May 14 in Berlin, based on NOAA 1991–2020 climate normals.

How long do Brussels sprouts take to grow?

Brussels Sprouts typically take 90–110 days from planting to harvest. Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost.

Other Crops in New Hampshire

When to plant Brussels sprouts in other states

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