In this study, the usage of Sarıkız herb tea (Sideritis trojana ehrend) was examined in terms of textile dyeing. For this purpose, cotton and wool fabrics were treated with willow extract for 24 h, at room temperature. The pretreated samples were dyed with S. trojana extract in the presence of three mordants including alum (AlK(SO4)2·12H2O), ferrous sulfate heptahydrate (FeSO4·7H2O) and copper sulfate pentahydrate (CuSO4·5H2O) and using three mordanting methods (pre-mordanting, meta-mordanting and post-mordanting). Fastness properties (rubbing and light) were also determined. Generally, high fastness values were obtained. The color strength values of the wool fabrics were found to be higher than that of cotton fabrics. It is concluded that, S. trojana ehrend has affinity to the wool fabrics, and can be used as an alternative source in the presence of willow extract in natural dyeing