Eupatorium – This dyestuff comes from a genus of flowering plants in the aster family. Ageratina adenophora is known by many common names, including eupatory, sticky snakeroot, and crofton weed. Eupatorium adenophorum is a synonym. There are many species of the genus Eupatorium that contain colourants; interestingly, the 1882 bulletin of the Royal Gardens, Kew, records two species known as Paraguay indigo. Eupatorium gives soft egg-yolk yellows that range into oranges. When used with an iron mordant it can be used for an earthy moss greens, when overdyed with indigo it provides a satisfying range of yellow to blue greens.
For more information see our Natural Dye Datasheet.