Denise
Moderator
For the first time since 1990 the USDA has revised the plant hardiness zone map to account for global warming.
http://www.knoxnews.com/news/2012/ja...flects-global/
This interactive map is very easy to use:
http://planthardiness.ars.usda.gov/PHZMWeb/
http://www.knoxnews.com/news/2012/ja...flects-global/
This interactive map is very easy to use:
http://planthardiness.ars.usda.gov/PHZMWeb/