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When to plant / Illinois

When to plant peppers in Illinois

The planting chart is divided into Northern Illinois, Central Illinois, and Southern Illinois. Median dates for the last 32-degree freeze on the same page: Northern Illinois April 8-29; Central Illinois April 8-15; Southern Illinois April 1-8. The page also says southern Illinois can generally start crops two weeks earlier than central Illinois and northern Illinois about two weeks later; the crop rows below are the chart dates, not a recalculation of that sentence.

Source: University of Illinois Extension, When to Plant, retrieved 2026-10-10.

How this page reads that source: Illinois Fruit and Vegetable Planting Dates chart: north: June 15 to July 30; central: May 10 to July 15; south: May 15 to June 30.

North

  • June 15 to July 30 (June 15–July 30).

Central

  • May 10 to July 15 (May 10–July 15).

South

  • May 15 to June 30 (May 15–June 30).

City frost pages in Illinois are listed on Illinois.