Photo 89489937, (c) marctree, some rights reserved (CC BY-NC)

Attribution © marctree some rights reserved Uploaded by marctree Source iNaturalist Associated observations Photos / Sounds What Japanese Knotweed (Reynoutria japonica) Observer marctree Date August 11, 2020 08:19 AM EDT Place Mt Washington, MD 21209, USA (Google, OSM) Date Added August 11, 2020 10:12 PM UTC 2 IDs Research Grade View Sizes small medium large original