Great Falls's Hardiness Zone
Our records indicate the United States Department of Agriculture has given Great Falls a growing zone designation of 4b. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Great Falls's climate. If you are looking for plants suitable for growing in the Great Falls area, head on over to our page on plants that grow well in Great Falls, MT.


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Understanding your growing zone is very important because it is a measure of the lowest temperature that a plant can survive, helping you to decide what plants would grow best in your particular climate. Since Great Falls is in growing zone 4b this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Great Falls's climate should be chosen with this in mind or plants should be moved inside to keep their core temperature in the right range if necessary.
USDA Growing Zone: 4b
Zip Codes: 59404, 59401, 59405, 59406
Longitude: -111.2996
Latitude: 47.5022
Lowest Avg Temperatures (F): -25 to -20

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