Abstract: Natural dyes from leaves of mulberry and coffee was extracted by aqueous method and used for dyeing silk using different mordants. The selected eco-friendly mordants used include; iron water, ash water, cow dung and lemon juice. Silk yarn which was not bleached was knitter into small fabrics (8 x 10 cm). The knitted fabric pieces were degummed and bleached by soaking in ash water for 24 hours and heating in a solution containing hydrogen peroxide respectively. Sodium bi-carbonate was used as a catalyst, powder detergent and sodium silicate were used as stabilizing agents. Post-mordanting method was used during the dyeing of the pretreated silk fabrics.