They're easily dug up and moved. I have one i'm going to do as well.

I just divided mine to make a border and I'm not a talented gardener. They look lousy the year it is done, but the following year look fine again.

If they start to look ratty, give them what I call a hair cut or trim. I usually do this with mine once they start getting out of shape and too long. Doesn't do them any harm at all.