I can't recommend these plants enough. They make a great groundcover as they spread easily but not invasively, and never need dividing. They grow well in sun or shade and are very drought tolerant. They are one of the first things to bloom in spring when I am dying for colour, and they bloom for a looooooooong time. The foliage turns red in the fall. I have a large patch in my back yard that was one of the few things left in a garden that had been very neglected for many years - there weren't even any weeds growing among these bergenia! What more could you ask for in a plant?
You pretty much don't need to do anything with them once they're established, but an annual topdressing of a little compost will really help them thrive.
Bergenia have pink or white flowers. Their unique round, flat, fleshy leaves combine well with many other plants, especially spikey foliage such as grasses and irises.
Bergenia foliage is "evergreen", which in Calgary means that the leaves turn black and whithered but don't die back over the winter. Do not cut the leaves off as they will green up again in spring.