December 30, 2021 by mgnvmmfPersicaria_virginiana_Flower_Detail-1_Jul_ELM Persicaria virginiana (Virginia Knotweed, Jumpseed)en masse at the U.S. National Arboretum in July.Photo © Elaine Mills About mgnvmmf Previous Post:Persicaria_virginiana_Flower_Detail-1_Jul_ELM