USDA rolls out 2023 Plant Hardiness Zone Map—revealing how agricultural areas change with global warming

This week the U.S. Department of Agriculture (USDA) released an updated version of its Plant Hardiness Zone Map (PHZM)—a datum used by gardeners and farmers to determine which plants are most likely to thrive at a given location. Today, approximately 80 million growers in the United States and its “territories” depend on PHZM to help them plant crops.

The first PHZM was issued in 1990 and the second came in 2012. The updated, 2023 PHZM reveals how global warming has terraformed much of the country’s surface, rendering entire swaths of land untenable for agricultural uses.

The 2023 PHZM divides the U.S. into thirteen zones—data

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