I have had this cultivar in my garden for approximately 20 years. It has been rock solid hardy in my northern garden. I divided it last summer and moved it to a sunnier part of my garden. It was being crowded by other plants and was not getting enough sun. It hadn't bloomed for a couple of years. However, when it was blooming, it was very eye catching, and visitors to the garden always commented on it. I am looking forward to it putting on its lovely display of miniature blooms once again.