Indigo plant (Indigofera tinctoria L.): flowering stem with separate flower and fruit segments. Coloured engraving by J.J. or J.E. Haid, c.1750, after G.D. Ehret. | Wellcome Collection
Where is YOUR Indigo Grown? | Natural Dye: Experiments and Results
Plants of Himalayan Indigo - INDIGOFERA GERARDIANA - T.O.G
How to Grow and Care for False Indigo
Indigo Plant Information – What Are Some Different Types Of Indigo