OMG Lead Farmer, your garden is so beautiful.........I am indeed happy to have found GW Forum. There are some stunning gardens, lovingly tendered by some of you. Mine is nowhere near yours........thank God that you post your pictures as I really do enjoy them.
I grow a few clematis and have found that like all flowers, the single ones seem to attract the most insects. One good variety that is easy to grow too, is "Viticella". There are lots of colours and a profusion of flowers that last ages. Added bonus is that it rarely scums to wilt. Have fun looking it up on Google. 