Theresa Hortenstein dyed these skeins of yarn using invasive plants such as buckthorn, Japanese knotweed and tansies as natural dyes.

Shoppers will find a range of natural yarns, from hand-dyed, metallic silks to basic yarns by well-known brands like Noro from Japan and U.S.-based Berroco, but there’s not a synthetic fiber in ...

Ask someone in your home to cut a piece of either the cotton or polyester string or yarn without telling you which one it is. Then place this unknown sample in the dye bath. Compare the results to ...