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The USDA Hardiness Zones for Virginia range from Zone 5A (-20°F to -15°F) in the mountains, to Zone 8A (10°F to 15°F) along the coast. A lot of variations occur because of the state's significant relief.
In 2006, the Arbor Day Foundation released an update of U.S. hardiness zones, using mostly the same data as the AHS. It revised hardiness zones, reflecting generally warmer recent temperatures in many parts of the country, and appeared similar to the AHS 2003 draft. The Foundation also did away with the more detailed a/b half-zone delineations. [6]
According to the new map released in November 2023, about half of the United States has shifted to a new hardiness zone. That's really big news if you consider 80 million Americans use this map to ...
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.
The species is considered hardy to USDA Hardiness Zone 8, and may survive short periods of temperatures as low as −14 °C (7 °F). Large and older specimens can be found from southeastern Virginia south to Florida and west to Texas.
The new data is based on 1991-2020 GIS data collected from over 13,000 weather stations.
The hardiness zone is mainly 7a except for some 6b in high areas. The region is Virginia's first AVA, identified in 1982. [ 4 ] Limestone soil, which is common to the Valley, has been long associated with great wine growing regions in Europe. [ 5 ]
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