Toston's Hardiness Zone

Our records indicate the United States Department of Agriculture has given Toston a 2023 growing zone designation of 5a. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Toston's climate. If you are looking for plants suitable for growing in the Toston area, head on over to our page on plants that grow well in Toston, MT.

8pc Heavy Stainless Steel Garden Tool Set

Hydroponic Indoor Garden Grow Kit

Reusable Grow Bags for Tomatoes, Vegetable and Fruits

Seed Starting Trays
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 Toston is in growing zone 5a this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Toston'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: 5a
Zip Codes: 59643
Longitude: -111.4459
Latitude: 46.1657
Lowest Avg Temperatures (F): -20 to -15