What's the best way to propagate bamboo? I have plenty of established
bamboo to take from, but want to start a patch elsewhere.

Is there a simpler way than just digging some up and splitting it?
Also what time of year is better (I'm guessing I will have to wait
until spring). Finally, is it inconsiderate to plant bamboo next to a
neighbour's fence where it might spread, the height is around 4m.

Thanks!