When to plant Potatoes in Illinois

In spring, from Feb 20 – Mar 20 in Alton to Mar 20 – May 10 in Zion.

In fall, from May 15 – June 15 in Bartlett to July 25 – Aug 20 in Wood River.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Potatoes planting dates by place in Illinois
PlaceSpringFall
AddisonMar 15 – Apr 10July 20 – Aug 10
AlgonquinMar 20 – May 10June 15 – July 15
AlsipMar 10 – Apr 1July 20 – Aug 10
AltonFeb 20 – Mar 20July 25 – Aug 20
AntiochMar 15 – Apr 10June 15 – July 15
Arlington HeightsMar 15 – Apr 10July 20 – Aug 10
AuroraMar 15 – Apr 10June 15 – July 15
BarringtonMar 15 – Apr 10June 15 – July 15
BartlettMar 20 – May 10May 15 – June 15
BataviaMar 15 – Apr 10June 15 – July 15
Beach ParkMar 20 – May 10June 15 – July 15
BellevilleMar 10 – Apr 1June 15 – July 15
BellwoodMar 15 – Apr 10July 20 – Aug 10
BelvidereMar 15 – Apr 10June 15 – July 15
BensenvilleMar 15 – Apr 10July 20 – Aug 10
BerwynMar 10 – Apr 1July 20 – Aug 10
BloomingdaleMar 20 – May 10May 15 – June 15
BloomingtonMar 15 – Apr 10June 15 – July 15
Blue IslandMar 10 – Apr 1July 20 – Aug 10
BolingbrookMar 15 – Apr 10June 15 – July 15
BourbonnaisMar 15 – Apr 10June 15 – July 15
BradleyMar 15 – Apr 10June 15 – July 15
BridgeviewMar 10 – Apr 1July 20 – Aug 10
BrookfieldMar 10 – Apr 1July 20 – Aug 10
Buffalo GroveMar 15 – Apr 10July 20 – Aug 10
BurbankMar 10 – Apr 1July 20 – Aug 10
Burr RidgeMar 15 – Apr 10June 15 – July 15
Cahokia HeightsMar 10 – Apr 1July 20 – Aug 10
Calumet CityMar 15 – Apr 10June 15 – July 15
Campton HillsMar 15 – Apr 10June 15 – July 15
CantonMar 15 – Apr 10June 15 – July 15
CarbondaleMar 10 – Apr 1June 15 – July 15
Carol StreamMar 15 – Apr 10June 15 – July 15
CarpentersvilleMar 20 – May 10June 15 – July 15
CaryMar 20 – May 10May 15 – June 15
CentraliaMar 10 – Apr 1June 15 – July 15
ChampaignMar 10 – Apr 1June 15 – July 15
ChannahonMar 15 – Apr 10July 20 – Aug 10
CharlestonMar 10 – Apr 1June 15 – July 15
ChathamMar 10 – Apr 1June 15 – July 15
ChicagoMar 10 – Apr 1July 25 – Aug 20
Chicago HeightsMar 15 – Apr 10June 15 – July 15
Chicago RidgeMar 10 – Apr 1July 20 – Aug 10
CiceroMar 10 – Apr 1July 20 – Aug 10
CollinsvilleMar 10 – Apr 1July 20 – Aug 10
ColumbiaMar 10 – Apr 1July 20 – Aug 10
Country Club HillsMar 15 – Apr 10June 15 – July 15
Crest HillMar 15 – Apr 10June 15 – July 15
CrestwoodMar 10 – Apr 1July 20 – Aug 10
Crystal LakeMar 15 – Apr 10June 15 – July 15
DanvilleMar 15 – Apr 10June 15 – July 15
DarienMar 15 – Apr 10June 15 – July 15
DecaturMar 10 – Apr 1June 15 – July 15
DeerfieldMar 20 – May 10June 15 – July 15
DeKalbMar 15 – Apr 10June 15 – July 15
Des PlainesMar 15 – Apr 10July 20 – Aug 10
DixonMar 15 – Apr 10June 15 – July 15
DoltonMar 15 – Apr 10June 15 – July 15
Downers GroveMar 20 – May 10June 15 – July 15
East MolineMar 15 – Apr 10June 15 – July 15
East PeoriaMar 15 – Apr 10June 15 – July 15
East St. LouisMar 10 – Apr 1July 20 – Aug 10
EdwardsvilleFeb 20 – Mar 20July 25 – Aug 20
EffinghamMar 10 – Apr 1June 15 – July 15
ElginMar 20 – May 10June 15 – July 15
Elk Grove VillageMar 15 – Apr 10July 20 – Aug 10
ElmhurstMar 15 – Apr 10July 20 – Aug 10
Elmwood ParkMar 15 – Apr 10July 20 – Aug 10
EvanstonMar 20 – May 10June 15 – July 15
Evergreen ParkMar 10 – Apr 1July 20 – Aug 10
Fairview HeightsMar 10 – Apr 1July 20 – Aug 10
Forest ParkMar 10 – Apr 1July 20 – Aug 10
Fox LakeMar 15 – Apr 10June 15 – July 15
FrankfortMar 15 – Apr 10June 15 – July 15
Franklin ParkMar 15 – Apr 10July 20 – Aug 10
FreeportMar 20 – May 10May 15 – June 15
GalesburgMar 15 – Apr 10June 15 – July 15
GenevaMar 15 – Apr 10June 15 – July 15
Glen CarbonFeb 20 – Mar 20July 25 – Aug 20
Glen EllynMar 20 – May 10June 15 – July 15
Glendale HeightsMar 20 – May 10June 15 – July 15
GlenviewMar 20 – May 10June 15 – July 15
GodfreyFeb 20 – Mar 20July 25 – Aug 20
Granite CityFeb 20 – Mar 20July 25 – Aug 20
GrayslakeMar 20 – May 10June 15 – July 15
GurneeMar 20 – May 10June 15 – July 15
Hanover ParkMar 20 – May 10May 15 – June 15
HarveyMar 15 – Apr 10June 15 – July 15
Hazel CrestMar 15 – Apr 10June 15 – July 15
HerrinMar 10 – Apr 1June 15 – July 15
Hickory HillsMar 15 – Apr 10June 15 – July 15
HighlandMar 10 – Apr 1June 15 – July 15
Highland ParkMar 20 – May 10June 15 – July 15
HinsdaleMar 15 – Apr 10June 15 – July 15
Hoffman EstatesMar 20 – May 10May 15 – June 15
Homer GlenMar 15 – Apr 10June 15 – July 15
HomewoodMar 15 – Apr 10June 15 – July 15
HuntleyMar 15 – Apr 10June 15 – July 15
JacksonvilleMar 15 – Apr 10June 15 – July 15
JolietMar 15 – Apr 10June 15 – July 15
JusticeMar 10 – Apr 1July 20 – Aug 10
KankakeeMar 15 – Apr 10June 15 – July 15
KewaneeMar 15 – Apr 10June 15 – July 15
La GrangeMar 10 – Apr 1July 20 – Aug 10
La Grange ParkMar 10 – Apr 1July 20 – Aug 10
Lake ForestMar 20 – May 10June 15 – July 15
Lake in the HillsMar 15 – Apr 10June 15 – July 15
Lake ZurichMar 20 – May 10June 15 – July 15
LansingMar 15 – Apr 10June 15 – July 15
LemontMar 15 – Apr 10June 15 – July 15
LibertyvilleMar 20 – May 10June 15 – July 15
LincolnMar 15 – Apr 10June 15 – July 15
LincolnwoodMar 20 – May 10June 15 – July 15
LindenhurstMar 15 – Apr 10June 15 – July 15
LisleMar 20 – May 10June 15 – July 15
LockportMar 15 – Apr 10June 15 – July 15
LombardMar 20 – May 10June 15 – July 15
Loves ParkMar 15 – Apr 10June 15 – July 15
LyonsMar 10 – Apr 1July 20 – Aug 10
Machesney ParkMar 20 – May 10May 15 – June 15
MacombMar 15 – Apr 10June 15 – July 15
MahometMar 15 – Apr 10May 15 – June 15
ManhattanMar 15 – Apr 10June 15 – July 15
MarionMar 10 – Apr 1June 15 – July 15
MarkhamMar 15 – Apr 10June 15 – July 15
MattesonMar 15 – Apr 10June 15 – July 15
MattoonMar 10 – Apr 1July 20 – Aug 10
MaywoodMar 10 – Apr 1July 20 – Aug 10
McHenryMar 20 – May 10May 15 – June 15
Melrose ParkMar 15 – Apr 10July 20 – Aug 10
MidlothianMar 10 – Apr 1July 20 – Aug 10
MinookaMar 15 – Apr 10July 20 – Aug 10
MokenaMar 15 – Apr 10June 15 – July 15
MolineMar 15 – Apr 10June 15 – July 15
MontgomeryMar 15 – Apr 10June 15 – July 15
MorrisMar 15 – Apr 10June 15 – July 15
MortonMar 15 – Apr 10June 15 – July 15
Morton GroveMar 20 – May 10June 15 – July 15
Mount ProspectMar 15 – Apr 10July 20 – Aug 10
Mount VernonMar 10 – Apr 1June 15 – July 15
MundeleinMar 20 – May 10June 15 – July 15
NapervilleMar 20 – May 10June 15 – July 15
New LenoxMar 15 – Apr 10June 15 – July 15
NilesMar 15 – Apr 10July 20 – Aug 10
NormalMar 15 – Apr 10June 15 – July 15
NorridgeMar 15 – Apr 10July 20 – Aug 10
North AuroraMar 15 – Apr 10June 15 – July 15
North ChicagoMar 20 – May 10June 15 – July 15
NorthbrookMar 20 – May 10June 15 – July 15
NorthlakeMar 15 – Apr 10July 20 – Aug 10
O'FallonMar 10 – Apr 1June 15 – July 15
Oak ForestMar 15 – Apr 10June 15 – July 15
Oak LawnMar 10 – Apr 1July 20 – Aug 10
Oak ParkMar 10 – Apr 1July 20 – Aug 10
Orland ParkMar 15 – Apr 10June 15 – July 15
OswegoMar 15 – Apr 10June 15 – July 15
OttawaMar 20 – May 10June 15 – July 15
PalatineMar 15 – Apr 10June 15 – July 15
Palos HeightsMar 10 – Apr 1July 20 – Aug 10
Palos HillsMar 15 – Apr 10June 15 – July 15
Park ForestMar 15 – Apr 10June 15 – July 15
Park RidgeMar 15 – Apr 10July 20 – Aug 10
PekinMar 15 – Apr 10June 15 – July 15
PeoriaMar 15 – Apr 10June 15 – July 15
Pingree GroveMar 20 – May 10June 15 – July 15
PlainfieldMar 15 – Apr 10June 15 – July 15
PlanoMar 20 – May 10May 15 – June 15
PontiacMar 15 – Apr 10June 15 – July 15
Prospect HeightsMar 15 – Apr 10July 20 – Aug 10
QuincyMar 10 – Apr 1July 20 – Aug 10
RantoulMar 15 – Apr 10June 15 – July 15
Richton ParkMar 15 – Apr 10June 15 – July 15
River ForestMar 10 – Apr 1July 20 – Aug 10
River GroveMar 15 – Apr 10July 20 – Aug 10
RiverdaleMar 10 – Apr 1July 20 – Aug 10
Rock IslandMar 15 – Apr 10June 15 – July 15
RockfordMar 15 – Apr 10June 15 – July 15
Rolling MeadowsMar 15 – Apr 10July 20 – Aug 10
RomeovilleMar 15 – Apr 10June 15 – July 15
RoscoeMar 20 – May 10May 15 – June 15
RoselleMar 20 – May 10May 15 – June 15
Round LakeMar 20 – May 10June 15 – July 15
Round Lake BeachMar 15 – Apr 10June 15 – July 15
SchaumburgMar 20 – May 10May 15 – June 15
Schiller ParkMar 15 – Apr 10July 20 – Aug 10
ShilohMar 10 – Apr 1June 15 – July 15
ShorewoodMar 15 – Apr 10June 15 – July 15
SkokieMar 20 – May 10June 15 – July 15
South ElginMar 20 – May 10June 15 – July 15
South HollandMar 15 – Apr 10June 15 – July 15
SpringfieldMar 10 – Apr 1June 15 – July 15
St. CharlesMar 15 – Apr 10June 15 – July 15
SterlingMar 15 – Apr 10June 15 – July 15
StreamwoodMar 20 – May 10May 15 – June 15
StreatorMar 10 – Apr 1July 20 – Aug 10
SummitMar 10 – Apr 1July 20 – Aug 10
SwanseaMar 10 – Apr 1June 15 – July 15
SycamoreMar 15 – Apr 10June 15 – July 15
TaylorvilleMar 10 – Apr 1June 15 – July 15
Tinley ParkMar 15 – Apr 10June 15 – July 15
TroyMar 10 – Apr 1June 15 – July 15
UrbanaMar 10 – Apr 1June 15 – July 15
Vernon HillsMar 20 – May 10June 15 – July 15
Villa ParkMar 20 – May 10June 15 – July 15
WarrenvilleMar 20 – May 10June 15 – July 15
WashingtonMar 15 – Apr 10June 15 – July 15
WaterlooMar 10 – Apr 1July 20 – Aug 10
WaucondaMar 20 – May 10June 15 – July 15
WaukeganMar 20 – May 10June 15 – July 15
West ChicagoMar 15 – Apr 10June 15 – July 15
WestchesterMar 10 – Apr 1July 20 – Aug 10
Western SpringsMar 15 – Apr 10June 15 – July 15
WestmontMar 20 – May 10June 15 – July 15
WheatonMar 20 – May 10June 15 – July 15
WheelingMar 15 – Apr 10July 20 – Aug 10
WilmetteMar 20 – May 10June 15 – July 15
WinfieldMar 15 – Apr 10June 15 – July 15
WinnetkaMar 20 – May 10June 15 – July 15
Wood DaleMar 15 – Apr 10July 20 – Aug 10
Wood RiverFeb 20 – Mar 20July 25 – Aug 20
WoodridgeMar 20 – May 10June 15 – July 15
WoodstockMar 15 – Apr 10June 15 – July 15
WorthMar 10 – Apr 1July 20 – Aug 10
YorkvilleMar 20 – May 10May 15 – June 15
ZionMar 20 – May 10June 15 – July 15

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for potatoes.