THYRSOSTACHYS siamensis: 13m x 6cm, ?°C MONASTERY BAMBOO - Tight clump lacking branches on the lower two thirds makes this a popular ornamental species. It is also one of the most useful bamboos. The strong culms are used for light construction, craft, umbrella & broom handles, fishing rods, paper pulp & fuel. The young shoots are considered a delicacy. Often planted as a windbreak.