FrostCal

When to Plant Radishes in South Dakota

In a typical South Dakota location, sow outdoors Apr 1 – Apr 15. Across the state, the outdoor planting window starts as early as Mar 22 in Tea and as late as Apr 7 in Ellsworth Air Force Base. For a fall crop, plant around Aug 22 – Sep 5.

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
Sioux FallsMar 27 – Apr 10Aug 25 – Sep 8
Rapid CityMar 29 – Apr 12Aug 27 – Sep 10
AberdeenApr 3 – Apr 17Aug 18 – Sep 1
BrookingsApr 1 – Apr 15Aug 20 – Sep 3
WatertownApr 2 – Apr 16Aug 19 – Sep 2
MitchellMar 28 – Apr 11Aug 25 – Sep 8
YanktonMar 23 – Apr 6Aug 30 – Sep 13
PierreApr 1 – Apr 15Aug 22 – Sep 5
HuronApr 1 – Apr 15Aug 21 – Sep 4
SpearfishApr 7 – Apr 21Aug 21 – Sep 4
VermillionMar 29 – Apr 12Aug 22 – Sep 5
BrandonMar 27 – Apr 10Aug 25 – Sep 8
Box ElderApr 7 – Apr 21Aug 20 – Sep 3
Rapid ValleyMar 29 – Apr 12Aug 27 – Sep 10
Ellsworth Air Force BaseApr 7 – Apr 21Aug 20 – Sep 3
MadisonMar 31 – Apr 14Aug 19 – Sep 2
SturgisApr 3 – Apr 17Aug 22 – Sep 5
Belle FourcheApr 5 – Apr 19Aug 19 – Sep 2
HarrisburgMar 28 – Apr 11Aug 21 – Sep 4
TeaMar 22 – Apr 5Sep 1 – Sep 15

Showing the 20 most populous of 20 South Dakota cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all South Dakota cities.

Frequently Asked Questions

When should I plant radishes in South Dakota?

In a typical South Dakota location, sow outdoors Apr 1 – Apr 15. Across the state, the outdoor planting window starts as early as Mar 22 in Tea and as late as Apr 7 in Ellsworth Air Force Base. For a fall crop, plant around Aug 22 – Sep 5.

When is the last frost in South Dakota?

The average last spring frost in South Dakota ranges from April 26 in Tea to May 12 in Ellsworth Air Force Base, 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 South Dakota

When to plant radishes in other states

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