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Crop dates by place

Corn (home garden) Planting Dates by State and Region

Published corn (home garden) planting windows for 3 places, with the source and the caveats you need before you use them.

Across the 3 places in this data set, the planting window begins as early as Apr 15 (Southern Illinois) and as late as May 15 (Northern Illinois). The middle of the range starts around May 1.

Corn (home garden) windows by place
PlacePlantingHarvest
Central IllinoisPlanting: May 1 to July 1
Northern IllinoisPlanting: May 15 to July 1
Southern IllinoisPlanting: April 15 to June 25

Calendar view

Corn (home garden) calendar by place
ItemJanFebMarAprMayJunJulAugSepOctNovDec
Central Illinois plantingPlanting window in MayPlanting window in JunePlanting window in July
Northern Illinois plantingPlanting window in MayPlanting window in JunePlanting window in July
Southern Illinois plantingPlanting window in AprilPlanting window in MayPlanting window in June
Frost-date caveat: ranges blur real differences inside a state or region. Use them to plan, then fit them to your last frost date, soil temperature and field conditions.

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