Home › Cucumber › Grow in Illinois

Can You Grow Cucumber in Illinois?

US · USDA Zone 5b · zones 4a, 4b, 5a, 5b, 6a

Grows well here

Cucumbers grow quickly here — expect harvest within 50-70 days of transplanting after last frost.

Plant zones

3b–11b

Illinois last frost

early April

Illinois first frost

late October

Days to harvest

50–70 days

When to plant Cucumbers in Illinois

Start indoors

Mar 17

Transplant

Apr 7

Harvest

May 27 – Jun 16

Dates are approximate, based on Illinois's average frost dates. Your exact yard may vary by microclimate.

About Cucumber

Cucumbers are fast-growing warm-season crops that produce heavily once summer heat arrives.

Direct sow or transplant after all frost risk passes — cucumbers hate cold. Keep soil consistently moist. Train vines up a trellis to save space and improve airflow.

Full cucumber growing guide →

Gardening in Illinois

Illinois has a humid continental climate with hot summers and cold winters. Chicago is Zone 5b-6a; southern Illinois is warmer at Zone 6-7. Classic Midwest growing region.

See what grows well in Illinois →

Frequently asked questions

Can you grow Cucumber in Illinois?

Cucumbers grow quickly here — expect harvest within 50-70 days of transplanting after last frost.

What zone is Illinois?

Illinois spans USDA Zone 5b (4a, 4b, 5a, 5b, 6a).

When do you plant Cucumbers in Illinois?

Plant Cucumbers around early April (start indoors Mar 17), harvest May 27 – Jun 16.