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Landscape Plants
Images, Identification, and Information
Main Page    USDA Hardiness Zone Map of the United States
Other maps:   Oregon    Washington    Idaho    (for other states, see US Nat. Arboretum site)

From the US National Arboretum, released 2012    See (http://planthardiness.ars.usda.gov/PHZMWeb/#) USDA Hardiness Map