Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on May 24, 2008

Submitter does not have a specimen

Description of specimen

Big patch of Japanese knotweed growing on the north side of Columbia blvd.



Thanks for reporting knotweed. I will forward your report to the Oregon Department of Agriculture Noxious Weeds Program and the East Multnomah SWCD so they can be aware of this particular infestation and incorporate it into their weed control planning. Unfortunately there are often more weed than there is time or funding so this particular patch may not be controlled as soon as we would like. Please keep reporting knotweed though – the more we know about it current infestation the better we can strategize an effective response.

Thanks again,

Tania Siemens
Oregon State University Sea Grant Extension

Tania Siemens
May 29, 2008, 8:58 a.m.