Persian Shield for sure - I am in zone 7b - Atlanta - and mine dies down
to the ground after the first real frost - but it comes back every year
and gets about 4' tall.

I had several of them but I thought they were annuals in this area. I
pulled them up after the frost turned them to black mush. I missed
pulling this one up and its been coming back every spring. Beautiful
plant. In full sun.