Kind of hard to id from the aerial rootlets and just the back of a leaf. Are the leaves in the lower left of the picture from this plant?

From the one odd angle leaf I'd guess Campsis radicons, Trumpet creeper. Any flowers?

Yes they are.

Another pic

No flowers so far...

I think waterbugguy has it, Campsis radicans.

Yup, I agree, it sure looks like orange trumpet creeper to me (also available in yellows and creams, LOL). They'll pop up from runners from nearby plants (hence the fun roots that help it climb or root if the stems touch soil) and they're quick from seed too.

Is it your plant? On purpose? When well grown, they sure are nice. Keep us posted! Happy gardening!

I just moved in to my place in June. Thought it was a weed as it was popping up out of the ground in the corner of the brick wall in my backyard. I was going to pull it out but maybe i will keep it.

Always fun to see what it turns into. Previous owners may have cut it back to get ready for sale. I often do that because too many plants scare off many buyers.

I does look kind of leggy,,,maybe too shady a spot? Maybe it's just getting started. But still could be nice. Easy enough to remove later if needed.