Natural dye - Ceylon cinnamon
To obtain beige to brown shade in textile with natural dye, you can use Ceylon cinnamon. If you use iron (Fe) as a mordant you can also get grey color.
Of course, you know cinnamon as a spice to be used in cooking or baking as well.
(photo: one of the color obtained by Ceylon cinnamon dye)
This plant is grown in Sri Lanka (therefore, the name Ceylon), Madagascar and other tropical regions.
It is fascinating to know which plants what kind of colors and where they grow, isn't it?