Parthenium hysterophorus, a weed commonly known in India as congress grass was evaluated for its pulp and paper making properties. Studies on chemical constituents, fibre dimensions, unbleached, bleached yield and physical strength properties of pulp sheets were carried out. The proximate analysis of Parthenium hysterophorus showed that its plant material contained 78.0% holocellulose and 17.2% lignin. The pentosan was 15.8% and solubility in hot water and alcohol benzene was 11.25% and 5.89%. The unbleached pulp yield was 41.8% to 43.8% with varying alkali charge from 14-16% in soda cook. Kappa number was 27.2 to 30.2. Pulping pulp yield and kappa number decreased with the increase in alkali charge under the identical conditions. The pulp produced using 14% alkali charge had better strength properties as compare to pulp produced using 15% and 16% alkali charge. Laboratory handmade pulp sheets with adequate strength properties were obtained from soda pulp prepared from this plant material