That looks like mollusc damage .......
They seem to leave mine alone ... fingers crossed ........ I shall have to go out and check now I've seen yours ......
Wow hollie hock that looks bad !! I've never had anything worry mine, not even slugs.We do have a couple of pairs of Blackbirds in the garden so that could be the answer.
is that my P. rubra?
Poor little thing, I would have thought them a bit rough for mollusc grub. have they rotted with too much rain?
Mine looks a bit like that as well this time of year and I did wonder if it's some kind of mould/fungus. It does flower when it picks up though, usually when some warmer, dryer weather arrives - as if. Does yours get any sunshine at all under the fir tree?
Some of mine look rough now but this one, never. This is it on New Year's Day, not much flower but plenty of leaf