I think I posted this somewhere else -- I planted a rhizome last year that had no foliage whatsoever. The rhizome was firm, however, and it was a gift, so I had nothing to lose to plant it. It produced no leaves in the summer, none in the fall, and none (of course) in the winter. Even this spring -- there was no activity in this rhizome. Early this summer -- up popped fans. Great big fans. It will certainly bloom next spring. I have no idea why this happened -- I think that sometimes rhizomes go into dormancy and don't come out of it on the schedule that we're used to. Perhaps this rhizome was just spending its energy developing its root system.
Anyway -- I personally hang in there as long as the rhizome is firm. Also -- BTW -- I was really curious what would happen with this one. So it was a kind of experiment, as well.