Scientific name: Isatis tinctoria
Origin: W to E Asia
Medicinal use: It is a plant that provides bluish tones when dyed with it, but the process is not easy, since the dye must be previously reduced, to later oxidize it, which is when it will appear on the garment. What is used for dyeing are the leaves, which are taken both the first year and the second, and can be done in a staggered way, that is, taking leaves from the same plant at various times of the year, to make various stains.
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