@WardDas
Welcome!
I love rupestris! Great Agastache staple for the garden. Hardy to zone 4a, it is hardy for most northern gardeners, than most Agastaches, especially east of the Mississippi River.
That's wonderful that you've had some that long! I've had three original plants in the ground last many years, but not quite 10 years. I've grown it in containers also that came back after a few winters and do get volunteers here and there.
