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Here's How to Use the USDA's Plant Hardiness Zone Map
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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How to Find Your Gardening Zone—Plus, the Best Plants to Grow in Your Region
This refers to the United States Department of Agriculture's (USDA) Plant Hardiness Zone Map, which breaks the entire country into 10-degree Fahrenheit zones based on the average annual extreme ...