FrostCal

When to Plant Broccoli in Maine

In a typical Maine location, start seeds indoors Mar 14 – Mar 28, then transplant outdoors Apr 11 – Apr 18. Across the state, the outdoor planting window starts as early as Apr 4 in Lewiston and as late as Apr 25 in Sanford. For a fall crop, plant around Aug 8 – Aug 15.

Method Start indoors, then transplant
Days to maturity 55–80 days

Start indoors 5-7 weeks before last frost; transplant out 2-3 weeks before last frost (hardens off to light frost).

Broccoli Planting Dates by City

CityStart indoorsTransplantFall planting
PortlandMar 8 – Mar 22Apr 5 – Apr 12Aug 13 – Aug 20
LewistonMar 7 – Mar 21Apr 4 – Apr 11Aug 17 – Aug 24
BangorMar 16 – Mar 30Apr 13 – Apr 20Aug 2 – Aug 9
West ScarboroughMar 8 – Mar 22Apr 5 – Apr 12Aug 13 – Aug 20
South PortlandMar 8 – Mar 22Apr 5 – Apr 12Aug 13 – Aug 20
South Portland GardensMar 8 – Mar 22Apr 5 – Apr 12Aug 13 – Aug 20
AuburnMar 7 – Mar 21Apr 4 – Apr 11Aug 17 – Aug 24
BiddefordMar 21 – Apr 4Apr 18 – Apr 25Aug 1 – Aug 8
SanfordMar 28 – Apr 11Apr 25 – May 2Jul 29 – Aug 5
SacoMar 21 – Apr 4Apr 18 – Apr 25Aug 1 – Aug 8
AugustaMar 9 – Mar 23Apr 6 – Apr 13Aug 14 – Aug 21
WestbrookMar 8 – Mar 22Apr 5 – Apr 12Aug 13 – Aug 20
WatervilleMar 14 – Mar 28Apr 11 – Apr 18Aug 8 – Aug 15
BrunswickMar 14 – Mar 28Apr 11 – Apr 18Aug 8 – Aug 15
York BeachMar 13 – Mar 27Apr 10 – Apr 17Aug 12 – Aug 19
Wells Beach StationMar 21 – Apr 4Apr 18 – Apr 25Aug 1 – Aug 8
OronoMar 13 – Mar 27Apr 10 – Apr 17Aug 4 – Aug 11
LisbonMar 27 – Apr 10Apr 24 – May 1Jul 31 – Aug 7
North BathMar 22 – Apr 5Apr 19 – Apr 26Aug 4 – Aug 11
BrewerMar 16 – Mar 30Apr 13 – Apr 20Aug 2 – Aug 9
Presque IsleMar 26 – Apr 9Apr 23 – Apr 30Jul 25 – Aug 1

Showing the 21 most populous of 21 Maine cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Maine cities.

Frequently Asked Questions

When should I plant broccoli in Maine?

In a typical Maine location, start seeds indoors Mar 14 – Mar 28, then transplant outdoors Apr 11 – Apr 18. Across the state, the outdoor planting window starts as early as Apr 4 in Lewiston and as late as Apr 25 in Sanford. For a fall crop, plant around Aug 8 – Aug 15.

When is the last frost in Maine?

The average last spring frost in Maine ranges from April 25 in Lewiston to May 16 in Sanford, based on NOAA 1991–2020 climate normals.

How long do broccoli take to grow?

Broccoli typically take 55–80 days from planting to harvest. Start indoors 5-7 weeks before last frost; transplant out 2-3 weeks before last frost (hardens off to light frost).

Other Crops in Maine

When to plant broccoli in other states

Related Guides