Knotweed (unknown species) (Fallopia sp.) on Aug 25, 2010
Originally reported as Japanese Knotweed (Fallopia japonica)
Submitter does not have a specimen
EDRR Status: Local expert notified
Description of specimen
Looks like large Japanese Knotweed when driving by.
Commentary
Expert Reviewer
Samuel Leininger
Clackamas Soil and Water Conservation District
4-County Cooperative Weed Management Area
Columbia Gorge Cooperative Weed Management Area
Reporter
Aug. 25, 2010, 6:42 a.m.
Thanks for reporting this infestation of knotweed. As you know knotweed is a significant problem invader within Clackamas County. The Clackamas Soil and Water Conservation District is working with regional partners to map and catalog known infestations of knotweed to help prioritize future control efforts. Your report will help with that effort.
Unfortunately, at this time the resources needed to control this invader are limited in relation to the overall need. As such we offer technical information to local landowners to help them develop a management strategy that is effective to their particular site conditions and needs.
If you would like additional information please check these online resources to better manage knotweed in your property.
http://www.skamaniacounty.org/Noxious_Weeds/TNCreport.htm
http://www.imapinvasives.org/GIST/ESA/esapages/documnts/polycus.pdf
Again thank you for reporting this invader. Feel free to contact me if you have additional questions.
Sincerely,
Sam
______________________________________
Samuel Leininger
WeedWise Program Manager
Clackamas Soil & Water Conservation District
221 Molalla Ave. Suite 102
Oregon City, OR 97045
503-655-3144 x118
samuel.leininger@or.nacdnet.net
www.conservationdistrict.org
______________________________________
Samuel Leininger
Aug. 26, 2010, 10:06 a.m.