Morula leaf extract was examined in the synthesis of Copper Oxide (CuO) nanoparticles in this study. The active morula agents are extracted using boiling water followed by hydrothermal treatment with the metal oxide precursors to synthesize the metal oxide nanoparticles. There were no other hazardous substances used apart from water which is considered to be green. X-ray diffraction (XRD) analysis showed that pure and crystalline structures of CuO were fully formed after calcination at 350 ℃. CuO was determined by the doublet peak between 200 and 400 cm-1 using Raman spectroscopy. Scanning electron microscopy (SEM) and Brunauer–Emmet–Teller (BET) analysis were used to analyze the structural morphology and the adsorptive behaviour of the materials, respectively. Through these two methods, platelets were discovered in CuO and the material was discovered to have larger surface areas of 26.8 m2 /g. CuO material was then applied in the adsorption of dyes. It was observed that methylene blue (MB) and rhodamine 6G (R6G), adsorb well onto CuO material in an adsorption process. CuO ha s a maximum adsorptive efficiency of 78 %.