The subject of this painting refers to a Finnish-American folk cure for seasonal affective disorder (SAD) which involves bathing with grasses and herbs. The leaves are Labrador Tea (Rhododendron groenlandicum), collected from a Black Spruce bog on the shores of the Stony River, near Isabella, Minnesota.
Reference: Salo, Matt T. (1973). Roles of Magic and Healing: The Tietaja in the Memorates and Legends of Canadian Finns. Publications in Folk Culture, No. 3, National Museum of Man, National Museums of Canada, Ottowa.