I had thought about putting some to grow in a planter in their flight...is it safe for them?

Bamboo is safe, I would imagine black bamboo safe as well...

 

http://forums.budgiebreeders.asn.au/index....;hl=safe+plants

Black Bamboo, awesome stuff. Pretty sure it is safe but I personally wouldn't try growing anything in with budgies as they will just nip of any new growth as soon as it appears. Of course this usually applies if you have a lot in one place. If you have a couple you could give it a try. Maybe put mesh over it to give the plant a head start.