I have not grown much bamboo (only running for screen and bought some davidii which turned out to be a mislabled pain in the rear). You are doing well to put it in containers because even the clumpers will misbehave given opportunity.
Let’s post your question to the most current gardening thread, miss greeneyes.
ThankYa!
Maybe if I keep posting a few here and there will get interested in boo, and get involved...I think going the container route is great for those in apartments, townhouses, etc.
But it can get out of control in-the-ground if one is not prepared! Even in containers, and w/clumpers, it still has to be repotted and/or thinned out periodically.
Dick Gaines
*****
This is the most current gardening thread.
ms. greeneyes