Helena Valley West Central's Hardiness Zone

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Our records indicate the United States Department of Agriculture has given Helena Valley West Central a 2023 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 Helena Valley West Central's climate. If you are looking for plants suitable for growing in the Helena Valley West Central area, head on over to our page on plants that grow well in Helena Valley West Central, MT.

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 Helena Valley West Central is in growing zone 4b this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Helena Valley West Central'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.

2023 USDA Growing Zone: 4b

Zip Codes: 59602

Longitude: -112.0604

Latitude: 46.6634

Lowest Avg Temperatures (F): -25 to -20