Woad is the common name of Isatis tinctoria. In Medieval Europe it was the only source of blue dye for textiles. The leaves of the woad plant contain the same dye as Indian Indigo Indigofera tinctoria, although in a weaker concentration. This makes colouring with woad a much more subtle and delicate art. The same recipes that are used for indigo may be used for woad. The shades obtained from woad are slightly different from indigo and call to mind the areas where it was most popular - the south of France.
Our woad comes from France, from the famous woad project of Bleu de Lectoure.