When to plant Brussels sprouts in Maine

In spring, from Mar 25 – Apr 20 in Auburn to May 1 – June 15 in Sanford.

In fall, from June 1 – 30 in Bangor to July 1 – Aug 1 in Lewiston.

Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Brussels sprouts planting dates by place in Maine
PlaceSpringFall
AuburnMar 25 – Apr 20July 1 – Aug 1
AugustaApr 1 – May 1July 1 – Aug 1
BangorApr 1 – May 1June 1 – 30
BiddefordApr 15 – June 1June 1 – 30
LewistonMar 25 – Apr 20July 1 – Aug 1
PortlandApr 1 – May 1June 15 – July 15
SacoApr 1 – May 1June 15 – July 15
SanfordMay 1 – June 15June 1 – 30
South PortlandApr 1 – May 1June 15 – July 15
WatervilleApr 1 – May 1June 15 – July 15
WestbrookApr 1 – May 1June 15 – July 15

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 brussels sprouts.