Hi hollie hock,
Anything dead can be cut off anything. It will have no further use. All herbaceous perennials die back. You can either cut them off in autumn or spring. I tend to walk on the garden and cut in autumn and leave those I can reach from grass or path til spring. Some of them look nice through winter (but not this winter, everything went soggy and rotten). That way I don't walk on the bulbs as they come through
Hollie, you may find that if you look closely at the base of the stems, there may already be signs of fresh growth. If so, I'd cut them back to just above that growth & all being well they'll flower better this yr- assuming we get some sun!
If, however there isnt any sign of new growth & the remaining top growth is well & truely dead, which it probably will be, then a gentle tug of the plant should indicate whether it's still ok. If all dead, the tug allows the whole to completely come out. J.
Hols -guard against the revenge of the molluscs
Geoff, it was molluscs revenge last year, it's our turn this year
just planted some so will keep a close eye on them to see when they pop up.