When to plant brussels sprouts in Wisconsin

Brussels sprouts
Plant out in Milwaukee
Apr 12–Apr 26

Across Wisconsin the window opens between April 5 and April 23. Find your city below; the dates follow each town's own average last frost.

Start indoors, Milwaukee
Mar 1–Mar 15
Plant out, Milwaukee
Apr 12–Apr 26
Fall planting, Milwaukee
Jun 28–Jul 12
Last frost, Milwaukee
Apr 26

Start seeds indoors 6–8 weeks before the last frost; plant out up to 2 weeks before the last frost; sow again for fall 14–16 weeks before the first frost. Sprouts taste best after a few frosts. Plan the harvest for late fall.

Brussels sprouts planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
MilwaukeeApr 12–Apr 26
MadisonApr 17–May 1
Green BayApr 23–May 7
KenoshaApr 14–Apr 28
RacineApr 6–Apr 20
AppletonApr 20–May 4
Eau ClaireApr 10–Apr 24
WaukeshaApr 17–May 1
OshkoshApr 10–Apr 24
JanesvilleApr 12–Apr 26
West AllisApr 12–Apr 26
La CrosseApr 13–Apr 27
SheboyganApr 11–Apr 25
WauwatosaApr 12–Apr 26
Fond du LacApr 13–Apr 27
BrookfieldApr 16–Apr 30
Menomonee FallsApr 22–May 6
WausauApr 22–May 6
New BerlinApr 19–May 3
Sun PrairieApr 17–May 1
Oak CreekApr 8–Apr 22
GreenfieldApr 19–May 3
FranklinApr 19–May 3
BeloitApr 17–May 1
ManitowocApr 16–Apr 30
FitchburgApr 17–May 1
West BendApr 17–May 1
Mount PleasantApr 6–Apr 20
NeenahApr 20–May 4
SuperiorApr 22–May 6
All 43 cities
CityStart indoorsPlant outFall plantingLast frost
MilwaukeeMar 1 to Mar 15Apr 12 to Apr 26Jun 28 to Jul 12Apr 26
MadisonMar 6 to Mar 20Apr 17 to May 1Jun 19 to Jul 3May 1
Green BayMar 12 to Mar 26Apr 23 to May 7Jun 19 to Jul 3May 7
KenoshaMar 3 to Mar 17Apr 14 to Apr 28Jun 29 to Jul 13Apr 28
RacineFeb 23 to Mar 9Apr 6 to Apr 20Jul 4 to Jul 18Apr 20
AppletonMar 9 to Mar 23Apr 20 to May 4Jun 16 to Jun 30May 4
Eau ClaireFeb 27 to Mar 13Apr 10 to Apr 24Jun 24 to Jul 8Apr 24
WaukeshaMar 6 to Mar 20Apr 17 to May 1Jun 23 to Jul 7May 1
OshkoshFeb 27 to Mar 13Apr 10 to Apr 24Jun 30 to Jul 14Apr 24
JanesvilleMar 1 to Mar 15Apr 12 to Apr 26Jun 25 to Jul 9Apr 26
West AllisMar 1 to Mar 15Apr 12 to Apr 26Jul 2 to Jul 16Apr 26
La CrosseMar 2 to Mar 16Apr 13 to Apr 27Jun 23 to Jul 7Apr 27
SheboyganFeb 28 to Mar 14Apr 11 to Apr 25Jul 3 to Jul 17Apr 25
WauwatosaMar 1 to Mar 15Apr 12 to Apr 26Jun 28 to Jul 12Apr 26
Fond du LacMar 2 to Mar 16Apr 13 to Apr 27Jun 29 to Jul 13Apr 27
BrookfieldMar 5 to Mar 19Apr 16 to Apr 30Jun 24 to Jul 8Apr 30
Menomonee FallsMar 11 to Mar 25Apr 22 to May 6Jun 18 to Jul 2May 6
WausauMar 11 to Mar 25Apr 22 to May 6Jun 14 to Jun 28May 6
New BerlinMar 8 to Mar 22Apr 19 to May 3Jun 24 to Jul 8May 3
Sun PrairieMar 6 to Mar 20Apr 17 to May 1Jun 20 to Jul 4May 1
Oak CreekFeb 25 to Mar 11Apr 8 to Apr 22Jul 6 to Jul 20Apr 22
GreenfieldMar 8 to Mar 22Apr 19 to May 3Jun 24 to Jul 8May 3
FranklinMar 8 to Mar 22Apr 19 to May 3Jun 24 to Jul 8May 3
BeloitMar 6 to Mar 20Apr 17 to May 1Jun 22 to Jul 6May 1
ManitowocMar 5 to Mar 19Apr 16 to Apr 30Jun 30 to Jul 14Apr 30
FitchburgMar 6 to Mar 20Apr 17 to May 1Jun 19 to Jul 3May 1
West BendMar 6 to Mar 20Apr 17 to May 1Jun 22 to Jul 6May 1
Mount PleasantFeb 23 to Mar 9Apr 6 to Apr 20Jul 4 to Jul 18Apr 20
NeenahMar 9 to Mar 23Apr 20 to May 4Jun 16 to Jun 30May 4
SuperiorMar 11 to Mar 25Apr 22 to May 6Jun 19 to Jul 3May 6
Stevens PointMar 9 to Mar 23Apr 20 to May 4Jun 17 to Jul 1May 4
MuskegoMar 8 to Mar 22Apr 19 to May 3Jun 24 to Jul 8May 3
De PereMar 5 to Mar 19Apr 16 to Apr 30Jun 19 to Jul 3Apr 30
CaledoniaFeb 27 to Mar 13Apr 10 to Apr 24Jul 4 to Jul 18Apr 24
MequonMar 11 to Mar 25Apr 22 to May 6Jun 18 to Jul 2May 6
MiddletonMar 3 to Mar 17Apr 14 to Apr 28Jun 25 to Jul 9Apr 28
WatertownMar 3 to Mar 17Apr 14 to Apr 28Jun 22 to Jul 6Apr 28
HowardMar 12 to Mar 26Apr 23 to May 7Jun 19 to Jul 3May 7
Pleasant PrairieFeb 22 to Mar 8Apr 5 to Apr 19Jul 6 to Jul 20Apr 19
GermantownMar 11 to Mar 25Apr 22 to May 6Jun 18 to Jul 2May 6
OnalaskaFeb 26 to Mar 12Apr 9 to Apr 23Jun 27 to Jul 11Apr 23
South MilwaukeeFeb 25 to Mar 11Apr 8 to Apr 22Jul 6 to Jul 20Apr 22
OconomowocMar 5 to Mar 19Apr 16 to Apr 30Jun 22 to Jul 6Apr 30

Questions

When should I plant brussels sprouts in Wisconsin?

In Milwaukee, plant out from April 12 to April 26. Across Wisconsin the window opens between April 5 and April 23, depending on the local last frost.

How is this date worked out?

Start seeds indoors 6–8 weeks before the last frost; plant out up to 2 weeks before the last frost; sow again for fall 14–16 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Wisconsin

Brussels sprouts in other states

Frost dates for every city in Wisconsin