According to the United States Department of Agriculture (USDA), the avocado plant, formally "Persea americana," is cold hardy in USDA growing zones 9B through 11. In the United States, this includes South Florida as well as parts of California, Texas and Arizona, but not Tennessee.
About this Author
Sandy Mitchell is an Ohio-based writer, blogger and editor. Among other projects, she writes for About.com and "The Better Drink." Before devoting herself full time to writing, Mitchell was a travel agent and cruise school instructor for 18 years. She holds a Bachelors of Science in business administration from Bowling Green State University.