Charlie Pridham wrote:

I have a clematis (I think jackmanii)
which has climbed about 40ft up a wall.
Should I cut it back?
And if so, when?
It's a bit straggly, but flowers reasonably well.

It can be hard pruned/cut back between November and April.

If it has been many years since this last happened would suggest its down
in stages. or one stem at a time.

Thanks, I'll try that.

--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
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s-mail: School of Mathematics, Trinity College Dublin