What Can Grow in Iowa City, IA

Iowa City home to the University of Iowa has excellent growing conditions in east-central Iowa.

Iowa City, IA is in USDA Hardiness Zone 5a. The growing season lasts about 148 days, with last frost around April 25 and first fall frost around October 19. Top crops include tomatoes, peppers, corn.

5aUSDA Zone
148 daysFrost-Free
April 25Last Frost
October 19First Frost
🌱 What Grows in Iowa City
tomatoespepperscornbeanssquashherbs
💡 Planting Tips

University research presence. Rich soils. Plant warm crops May 1-10.

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📍 Full Zone 5a Guide 🌎 Iowa Planting Guide

Frequently Asked Questions

Iowa City, IA is in USDA Plant Hardiness Zone 5a. Iowa City home to the University of Iowa has excellent growing conditions in east-central Iowa.

The average last spring frost in Iowa City is around April 25. The first fall frost typically arrives around October 19, giving a frost-free growing season of approximately 148 days.

Iowa City's Zone 5a climate supports growing tomatoes, peppers, corn, beans, squash, herbs. University research presence. Rich soils. Plant warm crops May 1-10.

In Iowa City, start with cool-season crops like lettuce, spinach, and broccoli a few weeks before the last frost date of April 25. Warm-season crops like tomatoes and peppers should go in after all frost risk has passed.