...is making me happy, so I chose it as the Plant of the Week, for Shelterpop.
Not only a very fast climber, it will rebloom until early fall. In early spring I will chop it down to the second pair of good shoots, lopping off all of this season's growth. This is a cultivar that dates back to the 1885, when it was developed in Lyon - a classic. Like many clematis it is top-heavy where it blooms best in full sun, and the lore goes that they like their roots cool. I am not sure how cool the roots can be on my terrace, but I have planted tall Thai basil at its feet, which grows quite bushy and hides the threadbare base that I dislike about all clematis.