The new USDA plant hardiness zone map moves all of Chicago and most of central Illinois into the warmer Zone 6, but gardeners are still wise to be cautious because the weather continues to be ...

INDIANA, USA — Indiana is now mostly a Zone 6 state (both a and b) according to the United States Department of Agriculture's latest plant hardiness zone map. It was updated in November 2023, so this ...

The USDA's new Plant Hardiness Zone Map pushes about half of ... last updated its zone map in 2012 when it used temperature data from 1976 through 2005 as measured at 7,983 nationwide weather ...

2012 USDA Plant Hardiness Zone Map More directly, a changing USDA map will impact what you can grow. Tropical or less hardy species are more likely to survive in a higher zone classification.

The 2023 map incorporates data from 13,412 weather stations compared to the 7,983 that were used for the 2012 map. ... This is why, in my opinion, Zone 6 is the most challenging, ...