Blooming today all along the shoreline, pond bank, marsh, and meadow Iris versicolor goes by many charming common names including Sweet Blue Flag, Harlequin Blue Flag, and Northern Blue Flag. The specific epithet versicolor refers to the fact that it flowers in a range of blue to purple hues. No matter what shade of purple-blue, the falls are always yellow. Whatever one calls our native iris, it sure is beautiful, much prettier I think than hard-to-get-rid-of Siberian iris or the top heavy and overly showy bearded iris. And this American beauty is a hummingbird attractant!