Pruning viticelli clematis

Question

All advice says to prune in late winter/early spring before growth starts. But this winter is so mild I have growth already and one in particular has masses of growth quite high up. Should I cut them down now – risking possible frost later – or wait until say February? But then I will be cutting a lot of growth off so am worried they will do it all for a second time!

Answer 1

February or March is a great time to hard prune your Viticella Clematis variety.
You can hard prune right back to ground level, but I like to prune to about 12 inches in height.

https://www.gardeningknowhow.com/ornamental/vines/clematis/pruning-clematis-vines.htm