• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide

What's Your Hardiness Zone?

When scouring catalogues, surfing the internet and reading plant tags and seed packets, you’ll see a hardiness zone listed.  This is just one of the factors to consider when selecting a plant for your garden.

Most are referring to cold hardiness zones. These are designated areas based on the average minimum winter temperatures. See the USDA Plant Hardiness map to find your zone. Cold hardiness refers to a plant's ability to tolerate the cold temperatures in that zone. 

Heat hardiness zones are used less frequently. It refers to the average number of days with temperatures over 86 degrees. Check out the American Horticultural Society's Plant Heat Zone Map to find your zone.

Perennials, trees and shrubs are rated for their cold and sometimes heat hardiness. Selecting plants that thrive in your zone will increase your gardening success.

A bit more information:  Hardiness zones are just one of many factors to consider when selecting a plant.  Soil, sunlight, wind and other factors are also important in growing healthy plants. When looking at the hardiness maps you can see where topography, elevation and large bodies of water influence the high and low temperatures of surrounding areas, causing small variations within larger hardiness zones.

Related

Upcoming Webinars & Appearances


Feb. 8, 2023
WEBINAR: 
Indoor Container Garden Design & Display Ideas 
Register now

Feb. 10-12, 2023

PBS Wisconsin
Garden & Landscape EXPO

Madison, Wisconsin

Feb. 15, 2023
WEBINAR: 
10 Tips for Growing Better Dahlias! 
Register now

Feb. 17-19, 2023

NARI Milwaukee Spring Home Improvement Show
West Allis, Wisconsin

Feb. 22, 2023
WEBINAR: 
Grow Beautiful Water Gardens

Register now

March 1, 2023

WEBINAR: 
How and When to Prune Shrubs

Register now

March 4, 2023
Milwaukee Public Libraries
Milwaukee, Wisconsin

March 8, 2023 
WEBINAR:
Grow Your Own Flowers for Bouquets

Register Now

March 11, 2023

Home, Lawn & Garden Day
Bloomington, Illinois

Watch Melinda's past webinars ON DEMAND

Learn More

Book an Appearance

Learn More

Enter to Win this Honey Rose Dahlia Collection with six outstanding dahlias!

ENTER NOW