Passiflora incarnata -- are there any others this hardy?

 
The other day I was walking in a State Park here in Georgia and came across
a vine with a delightfully flashy bloom.  I looked all over the place to
find out what it was and discovered that it was the Passion Flower/Maypop,
aka Passiflora incarnata.  In scouting some sources, I find that there
are a bunch of Passiflora, but all the others I have seen require tropical
or semi-tropical climate.  I live in zone 6b-7 in the North Georgia
mountains.

Are there any other Passion Flowers that can overwinter outdoors in
Southern Appalacia?

Thanks!

billo

 Bill Oliver wrote:

Yes.  DW grew up not-to-far-south of Chattanooga, just barely in the
Appalachians, and says they grew wind there.

Bob

 
That's my part of the country!

Just P. incarnata or a different one?  The Maypop I saw in the park was
wild.  I was just curious if anything other than P incarnata would
grow up here, or just that one species.

billo

 Bill Oliver wrote:

P. incarnata, or purple passionflower, or maypop.  It is a state flower
of Tennessee.  I would expect you to be able to find it at any garden
center there.

I have no idea if any South American tropical varieties will grow there
without extensive winter protection.

Bob

 
Thanks.  The latter was my question.  I found one place out of Atlanta
that has a website (I haven't ordered anything from them, so this is
*not* an endorsement or review or criticism of the site):

http://passionflowerfarms.com

that lists two others:

Passiflora "Incense" -- which looks an awful lot like a regular maypop.
Passiflora caerulea "Blue Passion Flower" -- which it says is "root
hardy" to zone 6.  I assume "root hardy" means that, like the regular
maypop, it dies back in the winter and re-emerges in the spring.


billo