Irwin's Hardiness Zone

Our records indicate the United States Department of Agriculture has given Irwin a growing zone designation of 7a. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Irwin's climate. If you are looking for plants suitable for growing in the Irwin area, head on over to our page on plants that grow well in Irwin, MO.

Hydroponic Garden Grow Kit

Grow fresh herbs and vegetables year-round with this indoor hydroponic garden system.

Hoeing Ain't Easy Garden Sign

Fun and decorative garden sign to add personality to your space.

Worm Composting Kit

Complete kit for starting your own worm composting system.

Metal Arbor Trellis

Decorative arbor trellis for climbing plants and garden entrance.

Rustic Iron Garden Trellis

Sturdy trellis for supporting climbing plants and vines.

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 Irwin is in growing zone 7a this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Irwin'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: 7a

Zip Codes: 64759

Longitude: -94.287

Latitude: 37.5884

Lowest Avg Temperatures (F): 0 to 5