With the recent development of an enhanced Plant Hardiness Zone Map, the United States Department of Agriculture (USDA) has provided farmers and gardeners a more accurate guide to planting in ...

Zones 2–10 were further subdivided into two 5-degree half zones termed “a” and “b.” Others, like the Arbor Day Foundation and Sunset, have since published their own plant hardiness maps, but the USDA ...

For example, Seattle, Washington, and the city of Austin, Texas, are both in the USDA hardiness zone 9a because the map is a measure of the coldest temperature a plant can handle.

Heat domes, atmospheric rivers, bomb cyclones, and polar vortex—you’re not crazy, the weather is. And last week, the USDA confirmed it by releasing an updated climate zone map for 2023. For ...

"The map is not a good instrument for determining climate change," said Kim Kaplan, a spokeswoman for the USDA's Agricultural Research Service., "In some cases where areas changed zones there was ...

The map also creates two new zones: 12, for climates with average lows of 50 to 60 degrees and 13, for lows of 60 to 70 degrees. The map is also designed to be "Internet-friendly," according to ...

Boston University plant ecologist Richard Primack, who was not involved in the map project, said, “Half the U.S. has shifted to a slightly warmer climatic zone than it was 10 years ago." ...

The map reflects the “average lowest winter temperature” over a 30-year period at specific locations in each of the zones, according to the USDA. Overall, that average for the country was 2.5 ...

Like all tools, you have to take the USDA Zone Map with a grain of salt. It doesn’t mean you shouldn’t try to grow plants that are listed for zone 8b. Pushing the zone limit is half the fun of ...

If you look at the USDA climate zone or Sunset climate zone map, you will note that one zone is separated from the next by “average winter temperature.” ...

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