In this study, dyeing methods with and without mordant were used for the dyeing of woollen yarn with roselle's (Hibiscus sabdariffa L.) calyx and petals,. As mordants: alum of aluminium, alum of chrome, copper-sulphate, iron-sulphate, potassium-bichromate, potassium-hydroxide, 9sodium-chloride, sodium-hydroxide, sodium-sulphate, sodium-sulphite, tannin, tiny-chloride, and zinc-chloride were used. A total of. 28 dyeing treatments were performed, and very different colours and their tons were obtained. As a result, a variety of colours and their tons can be obtained from roselle's calyx and petals and the plant can provide a wide colour catalogue, indicating that it could be used in vegetal dyeings.