What Can Grow in Saint Louis, MO

Saint Louis at the confluence of the Mississippi and Missouri Rivers has a productive continental climate.

Saint Louis, MO is in USDA Hardiness Zone 6a. The growing season lasts about 170 days, with last frost around April 12 and first fall frost around October 18. Top crops include tomatoes, peppers, corn.

6aUSDA Zone
170 daysFrost-Free
April 12Last Frost
October 18First Frost
🌱 What Grows in Saint Louis
tomatoespepperscornbeanssquashsweet potatoes
💡 Planting Tips

River city with warm urban conditions. Plant warm crops after April 15. Good stone fruit.

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🔗 More Resources
📍 Full Zone 6a Guide 🌎 Missouri Planting Guide

Frequently Asked Questions

Saint Louis, MO is in USDA Plant Hardiness Zone 6a. Saint Louis at the confluence of the Mississippi and Missouri Rivers has a productive continental climate.

The average last spring frost in Saint Louis is around April 12. The first fall frost typically arrives around October 18, giving a frost-free growing season of approximately 170 days.

Saint Louis's Zone 6a climate supports growing tomatoes, peppers, corn, beans, squash, sweet potatoes. River city with warm urban conditions. Plant warm crops after April 15. Good stone fruit.

In Saint Louis, start with cool-season crops like lettuce, spinach, and broccoli a few weeks before the last frost date of April 12. Warm-season crops like tomatoes and peppers should go in after all frost risk has passed.