Posted: 11/10/2013 at 13:06
Thanks for the replies. Just went and had another look and found a handful of small snails (no more than that... but it is bright sunshine, so maybe they all come out at night!)
Its feet are in the shade.. and it gets a lot of sun from about 11am. The whole thing has collapsed, so its hard to say where it starts. Can't see any stripping. I'll try slug pellets and see what happens. And it could be I damaged the stems when planting.
I won't give up on it just yet!