This study aimed to determine the effects of fly ash, vermicompost, and their combination on the growth and yield of pakcoy (Brassica chinensis L.) grown on Ultisol soil. The research was conducted at the Agrotech Training Center (ATC), Faculty of Agriculture, Sriwijaya University, Indralaya, from May to August 2024. The experiment employed a Factorial Completely Randomized Design (CRD) consist…