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USDA Hardiness Zones

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#1 Karin Andresen

Karin Andresen

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Posted 05 October 2010 - 10:45 AM

The United States Department of Agriculture (USDA) released a new Plant Hardiness Zone Map.

This is the first update since 1990. Gardeners use this map to choose plants which will survive winters in their garden. In addition to updating the zones, the new chart is interactive and has a handy "look up by zip code". You'll find the new target="new">USDA Plant Hardiness Zone Map here: target="new">USDA Plant Hardiness Zone Map.

For a more detailed analysis of the new map, read this article from the Michigan State University Extension:

USDA releases new hardiness zone map
United States Department of Agriculture hardiness map features more up-to-date climate data and interactivity. Here are the strengths and limitations of the latest update since 1990.

by Bert Cregg, Michigan State University Extension, Departments of Horticulture and Forestry

According to >Gardener's Supply Company > the new chart is "A useful — but not fool-proof — guideline for selecting plants". Read the entire excellent article titled >"The New Hardiness Map" >.

Burpee also provides this online tool and information: target="new">Burpee Growing Zone Information
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