Abstract: Gardenia jasminoides and Curcuma longa are natural plants and widely distributed in the world. In this study, whether G. jasminoides and C. longa could be applied into the silk fabric was analyzed for natural staining. Fruits of G. jasminoides and roots of C. longa were air-dried and resulting powders were filtered for silk stainings. G. jasminoides without a mordant presented a yellowish color. Aluminum potassium sulfate showed similar pattern with no mordant but shinier. C. longa without a mordant presented a grey color. Interestingly, copper acetate and iron (2) sulfate showed a similar darker color pattern of brown and yellow. Gardenia jasminoides and Curcuma longa are completely different plants but here, dried staining materials contained yellowish properties. This natural staining material that is natural dye may be able to be applied in biological cell staining like hematoxylin.