I bought a load of shrubs from aldi last year, including a cytisus (broom). I potted it up, and it was quite happy for a few weeks, grew a bit - and then baby snails attacked it, decimating the leaves! To give it a chance to establish, I chucked it in the shed next to a window... And forgot about it! The compost still feels dampish, but it hasn't done much (I know it's winter!), but would the snails have done irreparable damage? I was really looking forward to lots of gorgeous yellow flowers!
My garden is too small to give house room to plants that don't earn their keep, so if it's had it, it will need to go.