I get volunteers every year, too. My original seeds came from a neighbor back when we lived in Chicago--it's probably been 30 years that we've had plants that keep coming back from those original seeds. The neighbor that originally gave them to my mom was Joe...for years, we just called them "Joe's flowers" without knowing what they were. Mine are all pink, they bloom late in the season, and I still call them "Joe's flowers" even though I've long known their proper name.
