In Minnesota two species of knotweed have been identified: Japanese knotweed (Polygonum cuspidatum) and Bohemian knotweed (Polygonum x bohemicum). Giant knotweed (Polygonum sachalinense ...
Can hybridize with invasive giant knotweed and produce a species called Bohemian knotweed. For more information visit Midwest Invasive Species Information Network (MISIN). Japanese knotweed is very ...
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