Indigofera tinctoria 1199163600

Indigofera tinctoria. Indigo is a flowering plant that was historically used to produce the dark blue dye also called indigo. Indigo is native to tropical and subtropical regions of the world, and was a successful cash crop in South Carolina in the 18th century.

Creative Commons BY-NC-SA

Flickr

Muséum de Toulouse. Indigofera tinctoria. May 09, 2003. Photograph. Flickr. Accessed February 20, 2026.