Record Details

Knotweeds, Polygonum spp.

ScholarsArchive at Oregon State University

Field Value
Title Knotweeds, Polygonum spp.
Names Oregon State University. Extension Service (creator)
Date Issued 2008-09 (iso8601)
Note Published September 2008. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Abstract Japanese and giant knotweeds were introduced to North
America in the late 1800s as ornamentals but soon escaped into
the wild. They are particularly invasive along streams, roadsides, and
waste areas. Large, spreading patches of knotweed can completely
dominate and displace native species in open sunlight. Erosion
can increase on riverbanks or floodplains invaded by knotweed when
above ground parts die back and wash away each winter, leaving bare soil. Knotweed thrives in a variety of
habitats but is most prolific and invasive in moist, open areas.
Genre Technical Report
Topic Polygonum -- Control -- Oregon
Identifier http://hdl.handle.net/1957/19801

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