The database indicates it is a perennial, so that puts it in the realm of worth trying to me. From there, you just have to decide if you have a spot and want to mess with it. Just don't wait until it's exposed to near-freezing temps. That can freak out topicals. If the lowest hardiness is Z11 as indicated in the DB, it's probably not equipped to go dormant. Few Z11+ plants do that.
If you try, let us know what happens! : )
Globe Amaranth (Gomphrena pulchella Truffula™ Pink)