In article ,
Phil L wrote:

It's strange you should mention this...I have three or four clematis growing
in pots on a shady fence, all we see is a few miserable stalks and weeds
growing in the pots, next door meanwhile has a mass of flowers and
foilage...it was only this afternoon that I thought about cutting it all
back and repotting it for next year and moving it to a sunnier position in
my own garden....when's the best time to do this anyone?

If they flower early in the year, immediately after flowering. If
they flower later, any time from late autumn to late winter. If
they include C. armandii, that may well die.


Regards,
Nick Maclaren.