In article ,
says...

I have to have several fence panels replaced. I have a clematis
cirrhosa, in full flower, on one panel, which I can detach from the
fence. It is growing in a pot, but has now rooted down into the
ground, and the pot is immovable.
Can I cut through the root below the pot? Would it survive? I would
then replant it in the soil. I don't know how much root is in the pot
and how much is below.

I could smash the pot (shame) and try to dig up some roots. Would
that give it more chance?

Afdvice please. It's doing rather well now. Has been there for about
5 years but restricted growth until it rooted out of the pot.

Pam in Bristol

If you reduce the top growth a lot it will move fine in the pot with the
roots cut through, dont dig it up having smashed the pot as they don't
move that well although this is not a bad time as they are about to start
into growth.
Cutting it back now you should be fine for flowers next year
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea