FrostCal

When to Plant Radishes in Maine

In a typical Maine location, sow outdoors Mar 28 – Apr 11. Across the state, the outdoor planting window starts as early as Mar 21 in Lewiston and as late as Apr 11 in Sanford. For a fall crop, plant around Aug 29 – Sep 12.

Method Direct sow
Days to maturity 22–30 days

Very fast and cold-hardy; direct sow 3-5 weeks before last frost, as soon as soil can be worked.

Radishes Planting Dates by City

CityDirect sowFall planting
PortlandMar 22 – Apr 5Sep 3 – Sep 17
LewistonMar 21 – Apr 4Sep 7 – Sep 21
BangorMar 30 – Apr 13Aug 23 – Sep 6
West ScarboroughMar 22 – Apr 5Sep 3 – Sep 17
South PortlandMar 22 – Apr 5Sep 3 – Sep 17
South Portland GardensMar 22 – Apr 5Sep 3 – Sep 17
AuburnMar 21 – Apr 4Sep 7 – Sep 21
BiddefordApr 4 – Apr 18Aug 22 – Sep 5
SanfordApr 11 – Apr 25Aug 19 – Sep 2
SacoApr 4 – Apr 18Aug 22 – Sep 5
AugustaMar 23 – Apr 6Sep 4 – Sep 18
WestbrookMar 22 – Apr 5Sep 3 – Sep 17
WatervilleMar 28 – Apr 11Aug 29 – Sep 12
BrunswickMar 28 – Apr 11Aug 29 – Sep 12
York BeachMar 27 – Apr 10Sep 2 – Sep 16
Wells Beach StationApr 4 – Apr 18Aug 22 – Sep 5
OronoMar 27 – Apr 10Aug 25 – Sep 8
LisbonApr 10 – Apr 24Aug 21 – Sep 4
North BathApr 5 – Apr 19Aug 25 – Sep 8
BrewerMar 30 – Apr 13Aug 23 – Sep 6
Presque IsleApr 9 – Apr 23Aug 15 – Aug 29

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 radishes in Maine?

In a typical Maine location, sow outdoors Mar 28 – Apr 11. Across the state, the outdoor planting window starts as early as Mar 21 in Lewiston and as late as Apr 11 in Sanford. For a fall crop, plant around Aug 29 – Sep 12.

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 radishes take to grow?

Radishes typically take 22–30 days from planting to harvest. Very fast and cold-hardy; direct sow 3-5 weeks before last frost, as soon as soil can be worked.

Other Crops in Maine

When to plant radishes in other states

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