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Crop Planting Dates in Northern Illinois

Published planting and harvest windows for 36 crops in Northern Illinois, in one calendar. Ranges only, with sources.

Windows in Northern Illinois
CropPlantingHarvest
AsparagusPlanting: April 1 to 30
BeetsPlanting: April 24 to July 30
BroccoliTransplanting: April 24 to May 15, July 15 to 30
Bush BeansPlanting: May 24 to June 30 or July 30 to Aug. 14
CabbageTransplanting: April 24 to July 30
CarrotsPlanting: April 24 to July 30
CauliflowerTransplanting: July 24 to Aug. 10
ChardTransplanting: April 24 to May 15, July 24 to Aug. 10
Corn (home garden)Planting: May 15 to July 1
CucumberPlanting: May 24 to June 30
EggplantTransplanting: May 24 to June 30
EndivePlanting: April 14 to May 14, August 5 to 30
GarlicPlanting: Mid-September
Green onions (sets)Planting: April 9 to May 15
KaleTransplanting: April 14 to May 14, Aug. 1 to 14
KohlrabiPlanting: April 8 to 20, July 15
LettucePlanting: April 15 to May 15, July 15 to Sept. 15
MuskmelonPlanting: June 3 to 24
MustardPlanting: April 15 to June 15, July 15 to Sept. 15
OkraTransplanting: May 24 to June 30
ParsnipPlanting: May 15 to Aug. 5 (Fall crop)
PeasPlanting: April 24 to May 15
PepperTransplanting: June 15 to July 30
Pole BeansPlanting: May 24 to June 30
PotatoPlanting: April 15 to 30
PumpkinPlanting: June 3 to 24
RadishPlanting: April 20 to June 15, Aug. 15 to Sept. 15
RhubarbPlanting: April 9 to May 30, Aug. 3 to 15
RutabagaPlanting: May 15 to Aug. 5 (Fall crop)
SpinachPlanting: April 5 to 30, Aug. 5 to Sept. 15
Squash (summer)Planting: May 24 to June 30
Squash (winter)Planting: June 5 to 15
Sweet PotatoPlanting: May 24 to June 15
TomatoTransplanting: May 24 to June 15
TurnipPlanting: May 15 to Aug. 5 (fall crop)
WatermelonPlanting: May 24 to July 1

Calendar view

Planting calendar for Northern Illinois
ItemJanFebMarAprMayJunJulAugSepOctNovDec
Asparagus plantingPlanting window in April
Beets plantingPlanting window in AprilPlanting window in MayPlanting window in JunePlanting window in July
Broccoli transplantingTransplanting window in AprilTransplanting window in MayTransplanting window in July
Bush Beans plantingPlanting window in MayPlanting window in JunePlanting window in JulyPlanting window in August
Cabbage transplantingTransplanting window in AprilTransplanting window in MayTransplanting window in JuneTransplanting window in July
Carrots plantingPlanting window in AprilPlanting window in MayPlanting window in JunePlanting window in July
Cauliflower transplantingTransplanting window in JulyTransplanting window in August
Chard transplantingTransplanting window in AprilTransplanting window in MayTransplanting window in JulyTransplanting window in August
Corn (home garden) plantingPlanting window in MayPlanting window in JunePlanting window in July
Cucumber plantingPlanting window in MayPlanting window in June
Eggplant transplantingTransplanting window in MayTransplanting window in June
Endive plantingPlanting window in AprilPlanting window in MayPlanting window in August
Garlic plantingPlanting window in September
Green onions (sets) plantingPlanting window in AprilPlanting window in May
Kale transplantingTransplanting window in AprilTransplanting window in MayTransplanting window in August
Kohlrabi plantingPlanting window in April
Lettuce plantingPlanting window in AprilPlanting window in MayPlanting window in JulyPlanting window in AugustPlanting window in September
Muskmelon plantingPlanting window in June
Mustard plantingPlanting window in AprilPlanting window in MayPlanting window in JunePlanting window in JulyPlanting window in AugustPlanting window in September
Okra transplantingTransplanting window in MayTransplanting window in June
Parsnip plantingPlanting window in MayPlanting window in JunePlanting window in JulyPlanting window in August
Peas plantingPlanting window in AprilPlanting window in May
Pepper transplantingTransplanting window in JuneTransplanting window in July
Pole Beans plantingPlanting window in MayPlanting window in June
Potato plantingPlanting window in April
Pumpkin plantingPlanting window in June
Radish plantingPlanting window in AprilPlanting window in MayPlanting window in JunePlanting window in AugustPlanting window in September
Rhubarb plantingPlanting window in AprilPlanting window in MayPlanting window in August
Rutabaga plantingPlanting window in MayPlanting window in JunePlanting window in JulyPlanting window in August
Spinach plantingPlanting window in AprilPlanting window in AugustPlanting window in September
Squash (summer) plantingPlanting window in MayPlanting window in June
Squash (winter) plantingPlanting window in June
Sweet Potato plantingPlanting window in MayPlanting window in June
Tomato transplantingTransplanting window in MayTransplanting window in June
Turnip plantingPlanting window in MayPlanting window in JunePlanting window in JulyPlanting window in August
Watermelon plantingPlanting window in MayPlanting window in JunePlanting window in July
Frost-date caveat: published dates are averages. Find your own last and first frost dates and compare them with these ranges before you plant.

Last reviewed: November 2026. Source: Illinois Extension - When to Plant (Home Vegetable Gardening).