Land Plants - invasive

Knotweed (unknown species) (Fallopia sp.) on Sep 13, 2011

Submitter does not have a specimen
EDRR Status: Local expert notified

Description of specimen

Large plant clumps, large green leaves with sprays of white flowering heads. Sept. 2011

Commentary

I do not have any images

Reporter
Sept. 13, 2011, 3:02 p.m.

Dear Catherine,

Thank so much for this report of Japanese knotweed. I apologize for the delayed response. We greatly value reports such as yours that can help us identify new populations and prioritize areas for control. I have forwarded your report to the City of Eugene and to Oregon Department of Transportation so they may be able to take an appropriate response action. Please keep on reporting new invaders. Thanks!

Tania

Tania Siemens
WISE Program Coordinator (Watershed and Invasive Species Education)
Oregon Sea Grant Extension
Oregon State University
tania.siemens@oregonstate.edu

Tania Siemens
Oct. 27, 2011, 12:14 p.m.

Remedy

Knotweed Shrub Complex: Identification, Biology, and Management, Oregon Extension Service

Location

Two sites on the Randy Pape' Beltline freeway, Eugene Or. One, on the North side, going west, between River Rd. off-ramp and the Prairre Rd. off-ramp, is a large clump of knot-weed. Second is on the South side of the Beltline freeway, going East, just past the on-ramp from Delta Highway, or across the whole Beltline freeway from where the Walmart store is, is another big patch of Knot weed in full bloom.

Expert Reviewer

Tania Siemens
WISE Program Coordinator (Watershed and Invasive Species Education)
Oregon Sea Grant Extension
Oregon State University
tania.siemens@oregonstate.edu
541-914-0701

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