May 16, 2022 by mgnvmmfEutrochium_purpureum_Flowers_Swallowtail_Butterfly_Jul_ELM Eastern tiger swallowtail (Papilio glaucus) butterfly on Eutrochium purpureum (purple Joe-pye-weed) in July. Photo © Elaine Mills About mgnvmmf Previous Post:Eutrochium_purpureum_Flowers_Swallowtail_Butterfly_Jul_ELM