The research work was initiated to study the impact of activated biomass from palm wastes on the growth of coconut planted on marginal bris soil. The experiment was carried out at MARDI Cherating, Pahang. Coconut plants of Ceylon tall at the age of 10 years old used. The activated biomass was derived from coconut fronds (CF) and empty fruit bunch (EFB) which were air-dried and carbonized in a stainless steel fabricated kiln at a temperature between 250oC – 350oC for 4 h to develop the activated biomass. Seven rates of activated biomass were applied in the experiment and it was combined with 4.50 kg/palms of NPK Blue 12:12:17:2 compound for each plant. The data was gathered for the different before and after treatment applications for the time of 2 years. Data of the palm as a measurement of vegetative growth (stem height, stem diameter, stem parameter, fronds number, fronds length, and chlorophyll content) was recorded. The results also showed the excellent effect of plants grown with different activated biomass types and rates per palm. T6 indicates the highest significant reading of stem height. Fronds number, stem diameter, and stem perimeter were indicated from parameters recorded highest at T3. The highest chlorophyll level and fronds number were observed at T4. Further field evaluations are needed to determine the relationship of level of biomass organic with the total amount of NPK supply in inducing the growth of coconut planted in marginal soil.