Eutrochium maculatum (spotted Joe-Pye weed) is a North American species of flowering plants in the family sunflower family. It is widespread through much of the United States and Canada. It is the only species of the genus found west of the Great Plains.Eutrochium maculatum is an herbaceous perennial sometimes growing as high as 2 m (6 ft 7 in). Stems are sometimes completely purple, sometimes green with purple spots.