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The Pioneer Woman on MSNHere's How to Use the USDA's Plant Hardiness Zone MapWhenever you purchase a new perennial plant ... Interestingly, the first edition of the plant hardiness zone map was created ...
In November, the USDA updated its Plant Hardiness Zone map for the first time in over a decade. It ranges from 1a to 13b, and the majority of the United States falls between zones 4 and 8.
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