Restraining bambo - ditches? rhizome pruning?
Do ditches really work to restrain bamboo? I read about digging a 12' ditch at the extent of the bamboo's growing space, and inspecting it every winter to remove any rhizomes that poke into that space. This appeals to me. The initial effort will be awful - in heavy clay, and I'm a wimp. But it sounds easiest for the future.
Rhizome pruning sounds good, too. But in another 40 years, when I'm 80, digging around the whole grove with a shovel to rhizome prune may be impossible.
Do the ditches really work? Would the rhizomes simply go under the ditch?
I'm thinking of the future. I don't want to create a bamboo monster. I need an easy maintenance yard. I'm not interested in a barrier that will eventually be breached.