What Can Grow in Great Falls, MT

Great Falls on the eastern slopes of the Rockies has a shorter colder season but productive summers.

Great Falls, MT is in USDA Hardiness Zone 4b. The growing season lasts about 128 days, with last frost around May 15 and first fall frost around September 20. Top crops include potatoes, beets, carrots.

4bUSDA Zone
128 daysFrost-Free
May 15Last Frost
September 20First Frost
🌱 What Grows in Great Falls
potatoesbeetscarrotskalebroccolibeans
💡 Planting Tips

Cold high plains climate. Focus on fast-maturing varieties. Raised beds warm faster.

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🔗 More Resources
📍 Full Zone 4b Guide 🌎 Montana Planting Guide

Frequently Asked Questions

Great Falls, MT is in USDA Plant Hardiness Zone 4b. Great Falls on the eastern slopes of the Rockies has a shorter colder season but productive summers.

The average last spring frost in Great Falls is around May 15. The first fall frost typically arrives around September 20, giving a frost-free growing season of approximately 128 days.

Great Falls's Zone 4b climate supports growing potatoes, beets, carrots, kale, broccoli, beans. Cold high plains climate. Focus on fast-maturing varieties. Raised beds warm faster.

In Great Falls, start with cool-season crops like lettuce, spinach, and broccoli a few weeks before the last frost date of May 15. Warm-season crops like tomatoes and peppers should go in after all frost risk has passed.