I got mine last fall and planted it in a flower bed. It bloomed twice this year but the flowers were small and few compared to the huge foliage. I still got a lot of foliage and it is crowding the bed. I did not know I was supposed to dig it up.
I think I would be happier if it was in a pot, I could bring it into the garage during the winter. We did get into the twenties twice last winter but only a day at a time and we did not have a ground freeze. I do get a ground freeze once in a while. This bulb was the size of a base ball when I planted it.