Polly are you saying the one I have is not hardy?
I did post for an ID on GW and a couple of people gave me a name and they are in colder zones and it is hardy for them also and they were surprised.
FYI if someone wants to try it seems to be perennial in gardens even colder than my zone..... the two were 4 and 5 zones.
They said White Flower sold it as a perennial it is Priscilla.