In message , renedrag
writes

I need a bit of advise on late pruning of wisteria.Unfortunatley I was
unable to prune my wisteria last year,and it's got a bit out of
hand,and needs the top cut back hard as well as pruning,it's a well
established plant and I don't think hard pruning now would hurt it too
much.But any thoughts or advise would be appreciated.
Thanks
renedrag.

See link below. This is basically what I have done for the past 30 or so
years - and our wisterias almost always bloom superbly. I would assume
you have conducted the first pruning and proceed with the recommended
Feb. Prune - clearing out the long trailers you don't want as you go. It
may not be 100% this year but if you follow this regime from now on,
although it's a little more work, the results are normally excellent and
well worth the trouble.

http://www.rhs.org.uk/advice/profiles0605/wisteria.asp

Hope this helps.
--
Gopher .... I know my place!