Plant Hardiness Zones Map

USDA Plant Hardiness Zone Map

This USDA plant hardiness Zones map for climate Zones will help you choose plants that will survive a typical winter in your cold hardiness Zone.

The United States Department of Agriculture (USDA) developed this map, and based the Zones on the lowest recorded temperatures across The United States.

Zone 2 is the very coldest area in the USA, and Zone 11 is the warmest.

I live in Los Angeles, coastal Southern California, and my hardiness Zone is 10.

The hardiness Zones system classifies plants by the coldest temperatures and Zone that they can endure.

For example, plants that are hardy to Zone 6 survive where winter temperatures drop to -10 degrees Fahrenheit (F).

Those plants hardy only to Zone 8 would die long before it's that cold.

Such plants may grow in colder regions, but must be treated as annuals and replaced each year.

Plants rated for a range of hardiness Zones can usually survive winter in the coldest region, as well as tolerate the summer heat of the warmest one.

The map below with the temperature chart, shows the range of average annual minimum temperatures for each Zone.

hardiness zone map

To find your own hardiness Zone, note the approximate location of your community on the map, then match the color marking that area to the key.

Regardless of where you live, it's important to know approximately what climate Zone you live in.

Because these Zones are based on winter temperatures, they serve as a rough guide to tell you which plants are most likely to last through the winter.

But they can't tell you whether they'll be happy in the soil, the rainfall, or the heat of a region.

USDA Zones, are often listed on plant labels. For instance, the label may tell you that a specific plant does best in Zones 4-11.

The lower the number, the colder the region the plant will tolerate.

So a plant that can be grown in Zone 4 is cold-hardy, whereas a plant grown as a perennial only to Zone 8 is less cold-hardy.

In the West and the South, "heat Zones" have been developed to help gardeners decide how much heat a plant can tolerate, which is a huge help to gardeners in the southern third of the United States. So be sure to read the plant labels.

I hope that this plant hardiness Zones map will help you with your plant selection and prevent you from buying the wrong plant for your climate hardiness Zone.


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