Another workhorse yellow dye – this with a redder base. Fustic is a tall tropical hardwood that grows wild throughout Central America, Mexico, the West Indies and Brazil. The best dye comes from the inner wood of the trunk which is sulfur yellow in color. Fustic is high in tannic acid, which makes it a perfect cotton dye. It will also color silk and wool to luscious shades of burnt gold. Fustic dyes the clearest yellows with an alum mordant, and provides a good base for other colors: overdyed with indigo to yield forest greens and blue-greens; combined with madder and cochineal to make oranges; and mixed with logwood to produce olive greens. Extract is in liquid form.