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So in my now zone 7a Kentucky garden (it was 6b in the last version of the map) there’s nothing that says my plants won’t encounter an occasional -3 or -5 or -8, as was the case in the late ...
The last time the USDA changed the Hardiness Zone map was 2012. ... No longer are there locations in Ohio in Zone 5b, where the average low temperature range is -15 to -10 degrees Fahrenheit ...
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 practical purposes, Canada has adopted the American hardiness zone classification system. The 1990 version of the USDA Plant Hardiness Zone Map included Canada and Mexico, but they were removed with the 2012 update to focus on the United States and Puerto Rico. [8] The Canadian government publishes both Canadian and USDA-style zone maps. [37]
Louisville has a humid subtropical climate (Köppen Cfa), typical of the Upper South, with four distinct seasons and is located in USDA hardiness zones 6b and 7a. [4] Spring-like conditions typically begin in mid-to-late March, summer from mid-to-late-May to late September, with fall in the October–November period.
Hardiness of plants is defined by their native extent's geographic location: longitude, latitude and elevation. These attributes are often simplified to a hardiness zone . In temperate latitudes, the term most often describes resistance to cold, or "cold-hardiness", and is generally measured by the lowest temperature a plant can withstand.
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.
Gardeners, take note! The USDA released a new hardiness zone map and half of the country has shifted. Read more here so you're ready to plant this spring. ... 24/7 Help. For premium support please ...