Passion flower

Yes watch some of them will take over.

Thanks Amy! I don't usually pay much attention to flowers, but those are LOVELY!
Krista

Passion Flower are a beautiful flowering vine that grow VERY well in OK. I had one on an old mailbox and it grow so fast in the first year that it outgrew the top of the mailbox. They like support like any other vine. Some varieties you can eat the fruit but I didn't care for mine very much.

Passionvine is a host plant for the gulf fritillary butterfly. They are a lot of fun to raise.

Passiflora is the scientific name. There is a forum that could id the exact form you have.