Resource Database


Resource Number: 31026
Title: Knotweed Biocontrol Agents: History and Ecology in North America
Publisher: North American Invasive Species Management Association
Resource Type: Fact sheet
Last Updated: June 18, 2025
Contributors:
Richard Shaw
Fritzi Grevstad
Jennifer Andreas
Robert Bourchier
Domain(s)/Area(S):
Locations:
Canada
Mexico
United States
Subject
Japanese knotweed  (Reynoutria japonica)
giant knotweed  (Reynoutria sachalinensis)
Bohemian knotweed, Hybrid Japanese knotweed  (Reynoutria x bohemica)
knotweed  (Fallopia spp.)
Japanese knotweed psyllid  (Aphalara itadori)
knotweed psyllid - Hokkaido line  (Aphalara itadori Hokkaido line)
knotweed psyllid - Kyushu line  (Aphalara itadori Kyushu line)
knotweed psyllid - Murakami line  (Aphalara itadori Murakami line)

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