Oh my, that is one happy clematis! It is such a lovely shade of blue. Do you have other clematis? We have a Texas native clematis called Leather Cup (clematis pitcheri). It isn't nearly as pretty as your Jackmanni, but it sure does spread! It has taken over one of the front beds.
WI really like the shape of the buds on ypur clematis. I rhink they look like a ladies wig. Very nice!