They weren't in a bag when I bought the Lilly's were in a pot and I transplanted them into a fancy pot that I purchased because I was impressed that I even found them in Bunnings.
Having said that, if one plant has just gone dormant after flowering there is nothing much I can do. It was only flowering a few weeks ago.
Do you think they may not flower next year because our winter isn't cold enough.
This is how I bought them in the photo.