well, it depends on the type of bamboo. Some varieties shoot
runners - they're the ones to watch out for. But most varieties
of bamboo that are sold stay in CLUSTERS, so you'll know that
one bamboo will spread to about 5/6 feet wide at most and then
stop. I forget all the different types - but I could never
convince anybody that we should get some - just because of the
horror stories folks have about the WRONG kind of bamboo. My
favorite is the ones that grow to 40 feet tall and you cna build
houses out of. That stuff is amazing. "