Library Home: Agribusiness Management: Plant Hardiness Maps

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CLIMATE CHANGE IMPACTS IN WISCONSIN (dnr.wisconsin.gov)
--- Multiple Access Points to 2023 Plant Hardiness Zone Map ----
2023 USDA Plant Hardiness Zone Map (allencentennialgarden.wisc.edu/)
2023 Plant Hardiness Zone (arborday.org)
2023 USDA Plant Hardiness Zone Map (sometimes does not load full picture) (planthardiness.ars.usda.gov)
USDA Hardiness Map & Finding Your Zone (2023 USDA Map) (americanmeadows.com)
---- DID YOU KNOW? Zones based on the coldest temperature noted each year for a series of years ----
History of Plant Hardiness Zone Maps - The Rest of the Story
Discussion of Conflicting Maps Opinion
The Garden Professors™: How accurate is the USDA Plant Hardiness Zone map?
"USDA Plant Hardiness Zone provides a quick snapshot of the coldest weather the location is likely to experience, a key factor for how well the plants will survive in that area."
"Not all areas of the country (and the world, for that matter) are warming at the same rate, and areas closer to the poles tend to be warming more quickly because of the loss of snow and ice in winter, especially in the Northern Hemisphere."
Approach the new Plant Hardiness Zone Map with some caution
The 2023 version of the map is "Based on 30-year averages of the lowest annual winter temperatures, the map reflects data from 13,412 weather stations compared to 7,983 used for the 2012 map."