After recently moving in to my new(old house) I cleared one the gable ends clearly along time ago a flower bed now absolutely covered in brambles I cleared it dug it down and placed membrane down and then replanted, start to notice this growing up between the wall and membrane clearly not a bramble I left it, now after only a short it's getting huge with no sign of any flowers.
My question is what is it and am I wasting my time keep supporting it up the wall.
Many thanks
Name: Carol Santa Ana, ca Sunset zone 22, USDA zone 10 A.