yes I do know they can vary alot, so that makes it hard. The plant in my moms new yard is huge, so it's had to have been there for a lot of years. There is nothing else in the yard worth 5 cents, so I'm guessing it's a common easy to find and not expensive variety, they obviously didn't spend money or seek out anything out of the ordinary. I would honestly just guess the festiva one, if it were not for the pink petals being so pronounced.