Hi Houston123! Since the discussion forum has a wider readership than the exchanges forum I put your question there.

By the way, I would not mix vines. I've tried it, but found that when the annual vine dies back it's a mess to try to clean it out from the perennial one. Hope you find 'the' vine you need for your situation.

Here is a link that might be useful: Your vine request on the Texas Discussions Page

houston123 - Can you please tell us what type of sun exposure the wall gets? This will help a lot - for instance, if the wall faces North, the options will be significantly different than if it faces West. There are several evergreen vines that also flower that could work in the spot depending on the sun exposure. There are also several deciduous or perennial options (vines that lose their leaves or die back in the winter and regrow in the spring). If you have a photo of the wall, that would also be useful.