it certainly looks it.

But I'd cut the canes down, give it a good watering and then see if anything re-sprouts.
Do you know which one it is?

Don't you think it might be possible that it has been caught by one of the overnight frosts? Lots of my plants have wind/frost scorched leaves, the Alstromeria sadly has had all its new growth blasted. I'd not throw it out yet.

Thank you both, I'll hold off on getting rid of it for a few weeks