Mark Hyde, Bart Wursten and Petra Ballings   cc-by-nc

Polygonum (Knotweed) is a genus of shrub in the family Polygonaceae. They are climbers. They are native to The Contiguous United States, Saint-Pierre Et Miquelon, Canada, Alaska, Pacific Basin excluding Hawaii, Greenland, North America, and Puerto Rico. Individuals can grow to 6.6 m.

show all records
show all records

EOL has data for 18 attributes, including:

Known occurrences, collected specimens and observations of knotweed. View this species on GBIF