Yes, I'd cut it back and use one of those cages.
It is a Terra Nova intro and here is their info on it.
http://www.terranovanurseries.... And here is the ATP database info.
Giant Hyssop (Agastache 'Summer Love')
Maybe you got a bad one from Santa Rosa. They'll mail you a (free) replacement one.
That's what I'd do, because I've never had an Agastache sprawling on the ground.
