[Fla Gal]

If you're in North America this map will tell you what your zone is.
http://www.fernlea.com/zone.htm

If you're not in North America do a google search using your continent or country name and the keywords "plant hardiness zone".

 

[Fla Gal]

I'm in zone 9b and never thought about when to plant potatoes in zone 6. Because this thread is about a planting zone you're not likely to get an answer to your potatoe question here.

It would be better to start another thread in this forum with the title "When to plant potatoes in zone 6?". Be sure to add the question mark.

I'm sure you'll receive quite a few responses and answers to your questions. Welcome to the board.