Where are you, what's the soil type, what's the annual rainfall, what's the
soil pH, how much sun or shade? Trust me, plants suitable for zone 6
in Missouri are probably not going to like zone 6 in the high desert.

Also, forget the potted vines idea... it'll be a major maintenance hassle with
little return for your labors. Also, figure any container aboveground and
unprotected will experience the equivalent of 1 to 1.5 zones colder in the
winter...

Kay