This is it, Brian. Mystery :)

I think that's the balloon flower, platycodon??

Agree with Sticki looks like Platycodon,not something I have grown for many years.

Bjs@Thank you :)) Seems like competition from dreaming seeds started. I thought also that this is platycodon, but was not sure.

its so different:-)))))))

Junna
It does open similar to Campanulas

Photo of opened platycodon will follow soon :)