In article , lid
says...
Sacha wrote:

It's a lovely Clematis and I don't know why more people don't grow it.
Another good,, late clowering one which is more rampant but is also
scented, though not as strongly. Is C. rehederiana. This has pale
yellow bellow like flowers with a cowslip perfume.

I put a C. rehderiana against a SE-facing wall in April 2006. It sat there
and sulked, died off in winter, and didn't reappear last year or this. I
reckon it's gone to the greta compost heap in the sky. As far as I can tell
from the literature, it's a bit temperamental.

Anyone know the secret of success with it?


They do have a habit of dieing, look for a young strong growing plant and
plant while growing, your wall may also have been drier than you thought,
it is easy in the rain to assume a plant has been watered and I seem to
remember 06 was a nice spring!
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea