When to plant radishes in Wisconsin

Radishes
Sow outdoors in Milwaukee
Mar 22–May 3

Across Wisconsin the window opens between March 15 and April 2. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Milwaukee
Mar 22–May 3
Fall planting, Milwaukee
Sep 6–Sep 20
Last frost, Milwaukee
Apr 26

Sow outdoors from 5 weeks before to 1 weeks after the last frost; sow again for fall 4–6 weeks before the first frost. The fastest crop in the garden. Sow a short row every week in spring and fall.

Radishes planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
MilwaukeeMar 22–May 3
MadisonMar 27–May 8
Green BayApr 2–May 14
KenoshaMar 24–May 5
RacineMar 16–Apr 27
AppletonMar 30–May 11
Eau ClaireMar 20–May 1
WaukeshaMar 27–May 8
OshkoshMar 20–May 1
JanesvilleMar 22–May 3
West AllisMar 22–May 3
La CrosseMar 23–May 4
SheboyganMar 21–May 2
WauwatosaMar 22–May 3
Fond du LacMar 23–May 4
BrookfieldMar 26–May 7
Menomonee FallsApr 1–May 13
WausauApr 1–May 13
New BerlinMar 29–May 10
Sun PrairieMar 27–May 8
Oak CreekMar 18–Apr 29
GreenfieldMar 29–May 10
FranklinMar 29–May 10
BeloitMar 27–May 8
ManitowocMar 26–May 7
FitchburgMar 27–May 8
West BendMar 27–May 8
Mount PleasantMar 16–Apr 27
NeenahMar 30–May 11
SuperiorApr 1–May 13
All 43 cities
CitySow outdoorsFall plantingLast frost
MilwaukeeMar 22 to May 3Sep 6 to Sep 20Apr 26
MadisonMar 27 to May 8Aug 28 to Sep 11May 1
Green BayApr 2 to May 14Aug 28 to Sep 11May 7
KenoshaMar 24 to May 5Sep 7 to Sep 21Apr 28
RacineMar 16 to Apr 27Sep 12 to Sep 26Apr 20
AppletonMar 30 to May 11Aug 25 to Sep 8May 4
Eau ClaireMar 20 to May 1Sep 2 to Sep 16Apr 24
WaukeshaMar 27 to May 8Sep 1 to Sep 15May 1
OshkoshMar 20 to May 1Sep 8 to Sep 22Apr 24
JanesvilleMar 22 to May 3Sep 3 to Sep 17Apr 26
West AllisMar 22 to May 3Sep 10 to Sep 24Apr 26
La CrosseMar 23 to May 4Sep 1 to Sep 15Apr 27
SheboyganMar 21 to May 2Sep 11 to Sep 25Apr 25
WauwatosaMar 22 to May 3Sep 6 to Sep 20Apr 26
Fond du LacMar 23 to May 4Sep 7 to Sep 21Apr 27
BrookfieldMar 26 to May 7Sep 2 to Sep 16Apr 30
Menomonee FallsApr 1 to May 13Aug 27 to Sep 10May 6
WausauApr 1 to May 13Aug 23 to Sep 6May 6
New BerlinMar 29 to May 10Sep 2 to Sep 16May 3
Sun PrairieMar 27 to May 8Aug 29 to Sep 12May 1
Oak CreekMar 18 to Apr 29Sep 14 to Sep 28Apr 22
GreenfieldMar 29 to May 10Sep 2 to Sep 16May 3
FranklinMar 29 to May 10Sep 2 to Sep 16May 3
BeloitMar 27 to May 8Aug 31 to Sep 14May 1
ManitowocMar 26 to May 7Sep 8 to Sep 22Apr 30
FitchburgMar 27 to May 8Aug 28 to Sep 11May 1
West BendMar 27 to May 8Aug 31 to Sep 14May 1
Mount PleasantMar 16 to Apr 27Sep 12 to Sep 26Apr 20
NeenahMar 30 to May 11Aug 25 to Sep 8May 4
SuperiorApr 1 to May 13Aug 28 to Sep 11May 6
Stevens PointMar 30 to May 11Aug 26 to Sep 9May 4
MuskegoMar 29 to May 10Sep 2 to Sep 16May 3
De PereMar 26 to May 7Aug 28 to Sep 11Apr 30
CaledoniaMar 20 to May 1Sep 12 to Sep 26Apr 24
MequonApr 1 to May 13Aug 27 to Sep 10May 6
MiddletonMar 24 to May 5Sep 3 to Sep 17Apr 28
WatertownMar 24 to May 5Aug 31 to Sep 14Apr 28
HowardApr 2 to May 14Aug 28 to Sep 11May 7
Pleasant PrairieMar 15 to Apr 26Sep 14 to Sep 28Apr 19
GermantownApr 1 to May 13Aug 27 to Sep 10May 6
OnalaskaMar 19 to Apr 30Sep 5 to Sep 19Apr 23
South MilwaukeeMar 18 to Apr 29Sep 14 to Sep 28Apr 22
OconomowocMar 26 to May 7Aug 31 to Sep 14Apr 30

Questions

When should I plant radishes in Wisconsin?

In Milwaukee, sow outdoors from March 22 to May 3. Across Wisconsin the window opens between March 15 and April 2, depending on the local last frost.

How is this date worked out?

Sow outdoors from 5 weeks before to 1 weeks after the last frost; sow again for fall 4–6 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Wisconsin

Radishes in other states

Frost dates for every city in Wisconsin