This spring, it grew again. When I went to pull it out, I realized there was another one growing alongside it. So I transplanted this one into a pot and left the smaller one with the roses. Look at it now, it's in full bloom.
To be honest, I know nothing about growing lilies, nor do I really care enough about them to look it up. I don't even really like lillies. I just had to snap this picture because it is pretty, isn't it?
Once again my mother has proved "Momma really does know best!"