The current study deals with the soaked wool fabrics dyed with natural dyes extracted from the leaves of Rhus parviflora. The optimization was carried out for the different variables: concentration of dye material, time for extraction of dye, dyeing time, concentration of mordants and methods of mordanting. Out of the three methods of mordanting, the best shades for dye were obtained using pre-mordanting with ferrous sulphate and potassium dichromate and post-mordanting with copper sulphate and stannous chloride. The colour fastness tests indicated that all samples change in colour on exposure to light. The light coloured samples were affected more rapidly as compared to the dark ones. The Tung leaf dyed samples exhibited fairly good to good fastness to light and the results of washing fastness tests showed that dyed samples had good to excellent fastness to washing.