Hydrangea petiolaris is good for a north facing wall

Added this question to GoYpedia Climbing Plants and Walls.

You could check out the David Austen rose site. and look up roses for partial shade. And there a number of lovely varieties on the site. Some climbing roses do quite well on a northerly aspect. and if you can see the sky at the point where you are going to plant it, then it is only partial shade.

I know there is at least one lovely yellow one that does OK on a north wall. there are some suggestions here

http://www.uk.gardenweb.com/forums/load/ukgard/msg031930121080.html