Posted: 23/07/2014 at 11:04
Phillippa is right - it all depends on variety.
I have a very pretty miniature variety growing in a large tub surrounded by annuals. My neighbours have three very tall, delicate bamboos right at the end of their garden and they are very beautiful and give a whispering sound in the breeze. The big, chunky thick ones seem to be the most liable to be invasive - I gues the ones grown many years ago before more friendly varieties were discovered.