You will need to actually get a root ball, preferably with one or more culms. You cannot propagate Black bamboo from branch/culm cuttings; rhizome (root) cuttings, if successful, will take a number of years to produce decent size culms.

Thanks for that. I've since moved on to buying some Alphonse carr plants and I'm getting ready to plant them today. I just posted seeking info on planting in another post on this forum. Maybe you can check that out and shoot me some answers. Thanks again

Yup...I responded to that a few minutes ago. Let me know if you need any more info.