Turmeric is bright bright yellow that does fade with time, but is helped by prepping fiber with mordant. You can use in a dye bath oror sprinkled onto your bundle dyed pieces.
With a tiny bit of iron it can lean towards green. Alkaline will turn it orange.
Turmeric is one of the oldest natural colouring agent used throughout the world from ancient time because of its unique bright yellow colour and antiseptic property too. Curcuma Longa L. belongs to the family Zingiberaceae , which is commonly known as Turmeric or Haldi. This herb is of bright yellow because it contains the “ Curcuminoids Curcumin, Demethoxycurcumin and Bisdemethoxycurcumin”. Curcumin is a diphenolic compound that exerts anti-inflammatory action.