WASHINGTON -- Global warming is hitting not just home, but garden. The color-coded map of planting zones often seen on the back of seed packets is being updated by the government, illustrating a ...
Gardeners here and on social media have been all in a “tizzy” about the USDA assigning new gardening zones. So what is a gardening zone? The USDA divides North America into 11 hardiness zones. Zone 1 ...
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