The Production on temperate condition in Typha species may exceed that of tropical swamps, however without venturing into the possibilities caused of higher standing crop and the rates of production in tropical and substrapical regions. Underground and Aboveground Biomass and their ratios at flowering time in different natural stands of Typha angustata near Agra, India ware studied in the field and experimentally over a periad of eleven months (June To April) The underground biomass was 40-50% of the aboveground biomass in both natural and experimental conditions.