This has been tentatively ID'd as a member of the Northern Exposure family. Hoping someone might recognize it by the blooms and either concur or have another guess...
Look at the flower pictures for American Halo on the Library. Looks like a match to me.
YAY Steve! I think that is it! And even better, I thought I had lost American Halo to root competition a couple of years ago, maybe I put it in this pot (without a label because I was SURE I would remember it) and it is found again!
Thanks so much!