Dying Hellebore

abby_a-e

Hi
I’m hoping someone can help or offer some advice as I’m something of a novice gardener.
I have, what was, a very large & healthy hellebore in a container (terracotta with holes in the bottom & pebbles in the bottom), that has over the last few weeks almost completely died. The stems and leaves have nearly all turned brown and pull away with no fight at all but don’t seem to have been eaten by anything.
I noticed today the pot seems to be teeming with wood lice- could they be the cause and is there anyway to rectify this? 
Many thanks in advance 

fidgetbones

Woodlice like rotting  plants.  Without seeing it, could it have been overwatered? If not look up Hellebore black death, caused by a virus.

Posy

Where I live it has been very warm and sunny with no rain. If you have the same, your hellebore may have suffered. They like damp, but not wet and a bit of shade. You don't say how large the pot is. My established hellebores are huge and would need an enormous pot. The roots go well down, too.