I have wild Clematis growing up and over my Rose of Sharon bushes. When I first noticed the vines growing over the Rose of Sharon I intended to pull them down but procrastinated. Now I'm glad I let them grow.
It has made a lovely crown of white blossoms which contrast nicely with the purple Rose of Sharon. They also attract hummingbirds which I enjoy very much. Besides being pleasant to the eye, they are lightly fragrant.