Ulm's Hardiness Zone

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

Self Watering Plant Pots

Innovative pots that maintain optimal moisture levels.

Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.

Worm Composting Kit

Complete kit for starting your own worm composting system.

Raised Garden Bed Kit

Easy-to-assemble raised garden bed for better soil control and drainage.

Small Greenhouse Kit

Compact greenhouse perfect for small spaces.

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 Ulm is in growing zone 4b this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Ulm'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, 59485

Longitude: -111.5252

Latitude: 47.4197

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