Interestingly, the first edition of the plant hardiness zone map was created by Arnold Arboretum at Harvard in 1927! And believe it or not, the most recent version of the USDA plant hardiness zone ...

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As cold weather sets in, we often find ourselves retreating indoors where it’s warm.

The hardiness map provided by the USDA ( is based on the minimum low temperatures an area usually experiences. You simply input your zip code in the search box to ...