Determining Plant Hardiness Zone

Or call your USDA county extension agent (should be in the government pages in the phone book).

A call or visit to your local garden center should be able to answer that question. Home Depot or lowes is not your local garden center.

Here's a good map. http://www.usna.usda.gov/Hardzone/ushzmap.html

The one below, just enter your zip code.
http://www.backyardgardener.com/zone/