In this study, the effects of different levels of organic and potassium chloride fertilizers on the growth, production, and nutrient content of Pakchong grass were evaluated. The experiment used a 6 × 4 factorial arrangement in a completely randomized design with 25 replications. Each polybag was filled with 5 kg of latosol soil. Organic fertilizer was applied at 0, 2.5, 5.0, 7.5, 10.0, and 12.5 t ha?¹, while Potassium fertilizer was applied at 0, 150, 200, and 250 kg ha?¹. No significant interaction (P>0.05) between organic fertilizer and KCl was observed for growth and production parameters at 8 weeks after planting, although each factor significantly affected several individual parameters. Organic fertilizer significantly affected stem diameter, number of leaves, fresh biomass, and dry biomass, with the best overall response occurring at 12.5 t ha?¹ level. Potassium fertilizer at 250 kg ha?¹ significantly increased the plant height, stem diameter, number of tillers, number of leaves, fresh biomass, and dry biomass. No significant interaction (P>0.05) was detected for dry matter, ash, crude protein, crude fat, crude fibre, acid detergent fibre, or neutral detergent fibre. In conclusion, organic fertilizer improved leaf number and biomass production, with responses beginning at 2.5 t ha?¹ for leaf number and 7.5 t ha?¹ for biomass production. Potassium chloride fertilizer at 250 kg ha?¹ improved vegetative growth and dry biomass. However, their combination did not improve the nutrient content or the leaf-to-stem ratio.