Q:

What is the USDA plant hardiness zone map?

A:

Quick Answer

The USDA plant hardiness zone map is a map of the United States that farmers and gardeners use to determine what plants do best in each geographic location. The map is divided into zones of 10 degrees Fahrenheit.

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Full Answer

Users can click on their states on the map available on the USDA's website, select their states from a drop-down menu or enter their ZIP codes to see which hardiness zones they live in. The USDA bases its hardiness map on the average extreme low temperature from a 30-year period in the past. The map only provides a generalization of plant hardiness, as many factors can affect climates, including hills and valleys, concrete and asphalt surfaces, and proximity to bodies of water.

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