By Sheelagh43
Lancashire,
United Kingdom 
We have one of the most common bamboo plants which we have grown for approx 30 years. It was quite contained with a slate surround, however in the last two years it has spread and has taken over part of a lawn and herbaceous border. We disturbed the roots at approx that time. How can we now curtail it? Would really like some suggestions.
1 Sep, 2011
Answers
I've found the roots impossible to chop as Julien suggests - they were like iron bars. I found that Roundup had partial success in killing some of it off.
1 Sep, 2011
You can either try to contain them with a barrier like you had before, or useing a spade chop the runners [rhizomes] off near to the base of the plant, a good time is now with autumn approaching, and you can repeat this through the seasons if you so wish.
1 Sep, 2011