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Many zone boundaries were changed as a result of the more recent data, as well as new mapping methods and additional information gathered. Many areas were a half-zone warmer than the previous 1990 map. [8] The 2012 map was created digitally for the internet, and includes a ZIP Code zone finder and an interactive map. [9] [10]
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 ...
The new 2023 map also is divided into 10-degree Fahrenheit zones and further divided into 5-degree Fahrenheit half-zones, to reflect microclimates and the inclusion of more weather data.
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.
In the United States, the EPA and the United States Geological Survey (USGS) are the principal federal agencies working with the CEC to define and map ecoregions. Ecoregions may be identified by similarities in geology , physiography , vegetation , climate , soils , land use , wildlife distributions, and hydrology .
Zone 10, or Zone A consists of Watford Junction (sometimes called Zone W), and c2c stations out to Grays (sometimes called Zone G) Zone 11, or Zone B, consists of the stations out to Hertford not covered by numbered zones, as well as Potters Bar and Radlett Zone 12, or Zone C, is Shenfield station Zone 13, or Zone D, consists of the stations ...
The hardiness zone maps. As long as there have been gardeners, people have noticed that some plants can survive extremely cold temperatures while others cannot. Tomatoes die at 32. Apple trees ...
The southern terminus of the Rose Canyon Fault Zone has not been conclusively determined, and is considered to connect to the Descanso and Agua Blanca Faults and/or the San Miguel–Vallecitos Fault Zone. [10] [11] Researchers have suggested that both of these faults may transfer slip to the Rose Canyon Fault via San Diego Bay step overs ...