Persicaria tinctoria is a species of flowering plant in the buckwheat family. Common names include Chinese indigo, Japanese indigo and dyer's knotweed.[2][3][4] It is native to Eastern Europe and Asia.

The leaves are a source of indigo dye. It was already in use in the Western Zhou period (c. 1045 BC – 771 BC), and was the most important blue dye in East Asia until the arrival of Indigofera from the south.

See also

References

  1. ^ Persicaria tinctoria. The Plant List.
  2. ^ Japanese Indigo Polygonum tinctorium also called: Persicaria tinctoria
  3. ^ An Impartation of Color: Japanese Indigo (Polygonum tinctorium) – leaves
  4. ^ "Dye seeds Japanese indigo, Polygonum tinctorium". Archived from the original on 2023-06-05. Retrieved 2023-08-23. [...] Japanese indigo or dyer's knotweed is a plant that contains indigo precursors in the green leaves.


Allikas: https://en.wikipedia.org/wiki/Persicaria_tinctoria
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