As tropical bamboo species usually have a short rhizome neck structure they form clumps composed of close growing culms. Unless correctly managed by thinning regularly, clumps become so dense and congested that harvest of shoots and poles becomes almost impossible. Systematic and regular cutting can actually increase yields and leads to greater convenience in harvesting.
Excessive cutting reduces yields and the clump is more susceptible to wind damage during storms.
When clumps mature and spread outwards, a modified 'keyhole' system for culling shoots and culms will allow greater access to the clump. Poles can be cut from the older and more mature inner part of the clump while shoots are harvested from the outer fringe. Rhizomes in the central portion of the clump contribute to the vigour of the whole clump. It is therefore inadvisable to completely remove this part for propagules without giving the plant an opportunity to establish new culms on the outer rim over a couple of growing seasons. All Rights Reserved, Australian Bamboo Network 1997.