Maybe, if the root is not frozen. Bring inside and cut it back. In amonth you will know if it is alive.

I was told this plant was a perennial. I have about 12 clumps of them, all brown from the freezes and frosts we have had. I thought I'd cut them back in March, when it starts to warm up a bit. Anyone every had any of them come back in the spring? Any advice?

I had one that came back after a freeze. I think it was real well insulated though. They are technically considered an annual, but in our climates there are lots of things that behave like a perennial.
They are a very striking blue, aren't they?

What combinations do you have them with? I saw them with yellow lantana that was very nice. Any other suggestions?