The 2023 USDA Plant Hardiness Zone Map, which helps determine what plants are most likely to survive harsh temperatures, divides the country into 13 zones, each representing a band of 10 degrees Fahrenheit. The map also includes half-zone bands (like Zones 6a and 6b) representing differences of 5 degrees Fahrenheit.
Saline County has moved into a warmer zone -- Zone 6a -- on the 2023 map compared to being in Zone 5b under the USDA's previous map, created in 2012.
The map reflects the average lowest winter temperature in any given location over a 30-year period, according to the USDA.
Climate specialists are warning gardeners and farmers to understand that despite the changes on the USDA map, the new zone designations represent very modest warming and very little change. While most experts say that the world is getting slightly warmer, they advise against buying into media sensationalism.
Moreover, the map doesn't reflect the extreme temperatures that can be deadly to plants, experts say.
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