Recently, I have noticed a 'new' clematis named 'Avalanche'. According
to the name tag, it is hardy down to -8 degrees.

Has anyone got any experience with this one. After some really bad
cold weather my jasmin has given up the ghost and I'm looking around
for a hardy replacment which can stand the cold north east weather a
little more.

Can anyone offer other very hardy clematis other than this new
avalanche one? preferable an early flowering one.

Chris