In fall of 2009, B. Multiplex 'fernleaf' was planted to provide some privacy against my neighbor's chainlink fence. You can see pictures of the bamboo in February of 2010 in an earlier blog post here: Bamboo pictures from 2/2010.
I really do hope you will look back at the older post about this hedge. That way you can appreciate how gigantic it has become. It provides great privacy and blocks out the view of the road on the other side of the neighbor's house completely.
I didn't realize how thick it had grown until I trimmed it up to keep it off the fence and discovered that my neighbor had put a utility shed on the other side of the fence. Who knew?
This is a clumping bamboo that can be kept from getting too wide by trimming the culms as they come up. I've read that some people just step on a newly emerging shoot and knock it over to eliminate it. Once a shoot is trimmed it doesn't continue to grow. I sure hope this is as easy a process as it sounds.