Oline Bredeli of Molde, Norway, taught weaving and working with teger, birch or spruce root, in 1982 and 1990. Canadian artist Karen Casselman’s specialty is historical plant dyes. She taught dyeing at Vesterheim in 1997, 2002, and 2005. For this placemat, she used korkje, a Norwegian dye made from fermented lichens.