Our new garden has a clump of bamboo. It wasn't contained at all when it was planted, and in the last couple of weeks bits of it have been shooting up as far as 5m away from the original clump. We do rather like it, and it was fine for the first 6 months we lived here, when it didn't try and escape, but I don't want to live in a jungle of it. Is it feasible to keep on top of killing the random bits all the time, or should we just remove it and put in something with better manners?