Tag Archives: Japanese Knotwood

Invasive Plants in Northern Virginia: Japanese Knotwood

Japanese knotweed is a particularly aggressive buckwheat family member found throughout the Mid-Atlantic region. The plant was introduced to the United States from Japan in the early 1800s as an ornamental and erosion-control plant and has been considered as invasive, especially in riparian areas, since it escaped cultivation in the 1930s.

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