Depends on if the rhizomes are still alive. If they dried out before planting, they will not live, and depends on time of year and how the rhizome was dug. Was it dug with top growth attached, and with soil still around the rhizome?

If you got a healthy live rhizome, it should shoot shortly after planting, but your best bet is to get a good sized rootball along with 2 or three culms and plant that. I don't have very much success from just a rhizome, at least at this time of the year.

Yes, agreeing with above, this would be a bad time for rhizome propagation as the buds are not usually ready now to shoot into growth.

Bamboos (despite legendary reputation) aren't easily propagated from small pieces.