I have found this to be a very DISAPPOINTING vine. I have one I've over-wintered for three years now, and gotten a total of THREE blooms. Come spring, this puppy's going into the ground, and if it doesn't bloom it's head off, it's toast come fall frost.

Just FYI. (*grin*)

What size container is it in? I saw one that is in the ground here in Chicago and it was covered in blooms and so gorgeous. Then in the Fall, I went to a nursery here in Chicago and they have one in a pretty large container and that was covered in bloom too. I am optimistic so I will give it a try. If yours doesn't bloom, try a larger container or, as you said, put it in the ground. Good luck. The vine in full bloom is breath taking!