Welcome to the forums @VB 76 it's really good to have you on board.
Well, at least you were sensible enough to leave that in a pot! We are, at the moment in the process of getting rid of some of the same stuff that has taken off and is trying to take over It would be a good idea now to harvest your canes and cut them off right at the bottom. New growth will then start and your plant will be brought back down to earth for a while, and look much nicer.
There are two types of bamboo. Spreading and clumping. Hopefully you don't have the type that @Tetters had, the spreading type. Wherever you cut bamboo the node below the cut will produce leaves, making it more tree like.