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I'm thinking of planting some punting pole and timber bamboo, even though they're clumping is there an easy way to keep it from spreading in one direction? I don't want it to spread into my neighbors yard so I'm wondering if you can put in a simply barrier? I know with running bamboo you have to put in a 3-4 ft barrier under ground or use a 3-4 ft raised bed. Where it's going to be, it will be hard to get behind it every year to trim up new growth.
I thought the clumping bamboo stayed very close to the surface when it spreads? For that matter the clumping shouldn't spread very far or very quick. I don't want to end up every year going out with a shovel digging around to stop new growth.
It spreads slowly, relative to running, but it spreads, and it is very strong- spreads with much more force than most running bamboos, sort of relative to the thickness of the culms and rhizomes... a large bamboo like Bambusa oldhamii tends to push its way through wimpy rhizome barriers almost like they're not there. A running bamboo tends to have a thinner, more agile rhizome, and is more apt to turn and 'look' for another direction to grow when hitting a barrier, while a clumper has less options and will just bust the wall down.