What Can Grow in Joliet, IL

Joliet southwest of Chicago has similar productive growing conditions with slightly more continental climate.

Joliet, IL is in USDA Hardiness Zone 5b. The growing season lasts about 150 days, with last frost around April 23 and first fall frost around October 19. Top crops include tomatoes, peppers, corn.

5bUSDA Zone
150 daysFrost-Free
April 23Last Frost
October 19First Frost
🌱 What Grows in Joliet
tomatoespepperscornbeanssquashbroccoli
💡 Planting Tips

Good corn and soybean country. Urban gardens productive with amended soil. Start warm crops May.

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📍 Full Zone 5b Guide 🌎 Illinois Planting Guide

Frequently Asked Questions

Joliet, IL is in USDA Plant Hardiness Zone 5b. Joliet southwest of Chicago has similar productive growing conditions with slightly more continental climate.

The average last spring frost in Joliet is around April 23. The first fall frost typically arrives around October 19, giving a frost-free growing season of approximately 150 days.

Joliet's Zone 5b climate supports growing tomatoes, peppers, corn, beans, squash, broccoli. Good corn and soybean country. Urban gardens productive with amended soil. Start warm crops May.

In Joliet, start with cool-season crops like lettuce, spinach, and broccoli a few weeks before the last frost date of April 23. Warm-season crops like tomatoes and peppers should go in after all frost risk has passed.