Japanese Knotweed blooming on Swamp Road, Worcester Co., Maryland (8/31/2013). Photo by Bill Hubick. (MBP list)
An invasive species of concern in Maryland. Photographed here in Worcester Co., Maryland (6/17/2012). Brought to England as an ornamental species in 1825 and then introduced to the U.S. Read more. Photo by Bill Hubick. (MBP list)
Japanese Knotweed in Allegany Co., Maryland (8/30/2014). Photo by Kimberly Booth. (MBP list)
Japanese Knotweed in bloom along Potomac River near Sideling Hill Creek, Washington Co., Maryland (8/19/2012). Photo by Richard Orr. (MBP list)
Japanese Knotweed flowering in Charles Co., Maryland (8/26/2009). Invasive. Photo by Kerry Wixted. (MBP list)
Japanese Knotweed in Anne Arundel Co., Maryland (6/18/2011). Photo by Bill Harms. (MBP list)
Japanese Knotweed in Garrett Co., Maryland (4/21/2017). Photo by Matt Tillett. (MBP list)
Early spring growth of Japanese Knotweed at Governor Bridge Natural Area, Prince George's Co., Maryland (4/13/2013). Seek and destroy. Photo by Bill Hubick. (MBP list)
Japanese Knotweed in fruit in Anne Arundel Co., Maryland (12/24/2018). Photo by Matthew Beziat. (MBP list)
Japanese Knotweed in Allegany Co., Maryland (4/17/2019). Photo by Kimberly Booth. (MBP list)
Japanese Knotweed in Howard Co., Maryland (5/22/2013). Photo by Joanne Solem. (MBP list)
New Japanese Knotweed shoots in Howard Co., Maryland (3/28/2016). Photo by Nancy Magnusson. (MBP list)
Japanese Knotweed in Calvert Co., Maryland (11/5/2016). Photo by Bill Hubick. (MBP list)
Japanese Knotweed (winter aspect) in Harford Co., Maryland (12/6/2015). Photo by Bill Hubick. (MBP list)
Japanese Knotweed near Lost Lake in Baltimore Co., Maryland (3/27/2016). Photo by Bill Hubick. (MBP list)
Japanese Knotweed blooming in Howard Co., Maryland (9/13/1981). Photo by Robert Solem. (MBP list)
Japanese Knotweed in Prince George's Co., Maryland (6/19/2019). (c) agelb, some rights reserved (CC BY-NC). Photo by agelb via iNaturalist. (MBP list)
Japanese Knotweed in Baltimore Co., Maryland (5/18/2020). (c) Dwight Johnson, all rights reserved. Photo by Dwight Johnson. (MBP list)