FrostCal

When to Plant Spinach in Maine

In a typical Maine location, sow outdoors Mar 21 – Apr 4. Across the state, the outdoor planting window starts as early as Mar 14 in Lewiston and as late as Apr 4 in Sanford. For a fall crop, plant around Aug 15 – Aug 29.

Method Direct sow
Days to maturity 40–50 days

Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.

Spinach Planting Dates by City

CityDirect sowFall planting
PortlandMar 15 – Mar 29Aug 20 – Sep 3
LewistonMar 14 – Mar 28Aug 24 – Sep 7
BangorMar 23 – Apr 6Aug 9 – Aug 23
West ScarboroughMar 15 – Mar 29Aug 20 – Sep 3
South PortlandMar 15 – Mar 29Aug 20 – Sep 3
South Portland GardensMar 15 – Mar 29Aug 20 – Sep 3
AuburnMar 14 – Mar 28Aug 24 – Sep 7
BiddefordMar 28 – Apr 11Aug 8 – Aug 22
SanfordApr 4 – Apr 18Aug 5 – Aug 19
SacoMar 28 – Apr 11Aug 8 – Aug 22
AugustaMar 16 – Mar 30Aug 21 – Sep 4
WestbrookMar 15 – Mar 29Aug 20 – Sep 3
WatervilleMar 21 – Apr 4Aug 15 – Aug 29
BrunswickMar 21 – Apr 4Aug 15 – Aug 29
York BeachMar 20 – Apr 3Aug 19 – Sep 2
Wells Beach StationMar 28 – Apr 11Aug 8 – Aug 22
OronoMar 20 – Apr 3Aug 11 – Aug 25
LisbonApr 3 – Apr 17Aug 7 – Aug 21
North BathMar 29 – Apr 12Aug 11 – Aug 25
BrewerMar 23 – Apr 6Aug 9 – Aug 23
Presque IsleApr 2 – Apr 16Aug 1 – Aug 15

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 spinach in Maine?

In a typical Maine location, sow outdoors Mar 21 – Apr 4. Across the state, the outdoor planting window starts as early as Mar 14 in Lewiston and as late as Apr 4 in Sanford. For a fall crop, plant around Aug 15 – Aug 29.

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 spinach take to grow?

Spinach typically take 40–50 days from planting to harvest. Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.

Other Crops in Maine

When to plant spinach in other states

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