With a view to prepare a biomass table of Bambusa nutans subspecies cupulata grown at Belbari, Morang district of Eastern Terai, a total of 150 samples were selected from ninety-eight clumps. Measurements of 15cm diameter at the base (D15), the vertical height of the culm and green weight of the culm, branches and foliage were recorded in the field. The sampled green weight was oven dried in Kathmandu.