Excellent plant. I love them. I got four a couple years ago, and have them in the back garden. They are very beautiful when matured. The type I have are self clinging, but I should really help them, as you have.
@AlisaJ I got this for my North facing bed, it's not over hung by anything but the sun never quite reaches it,its meant to handle shade well. I planted it about 3 months ago and it's nearly doubled in size 😃