Indigo producing plants exist all around the globe. These plants tend to be entrenched in indigenous cultures, spirituality, tied ceremony, industry, even class. The pigment the plant creates is one of the most durable, ancient, technical and history-rich pigments known to humans. The whole topic is endlessly fascinating, and Lucy Patterson is a researcher, photographer, and expert on textile traditions of the indigenous people of Northern Vietnam who have their own unique relationship with Indigofera tinctura.