Land Plants - invasive

Knotweed (unknown species) (Fallopia sp.) on May 22, 2010

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

Description of specimen

quite dense stand of knotweed runs for about 50 feet at the edge of the irrgation ditch here.
the plants are about 15 feet tall, i am certain that this is knotweed.

Commentary

no just want to find out if siting is confirmed

Reporter
May 22, 2010, 2:18 a.m.

Hi Debbie, Thanks so much for reporting! I am sorry I did not follow up on this as rapidly as I should of. Yesterday I shared this report with Kyle, and this is what he had to say:

"Thanks Debbie, sounds like you found another infestation. Next time I'm in the area I can confirm, but if it's as tall as you say, there's not much else it could be. After researching ownership, and where this ditch leads we can assess an approach for this.
Thanks again for reporting,
Kyle"

Thanks,
Tania

Tania Siemens
Invasive Species Early Detection and Rapid Response Coordinator
The Nature Conservancy
WISE Program Coordinator (Watershed and Invasive Species Education)
Oregon Sea Grant Extension
tania.siemens@oregonstate.edu
541-914-0701

Tania Siemens
June 3, 2010, 9:41 p.m.

Remedy

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

Location

N 42.40498, W123.34722

Along the east shoulder of williams hwy , south of New Hope Road and 50 feet north of Wagon Wheel drive. an irrigation ditch runs right along the road here for approximately 100 feet.

It looks like public land or irrigation district right-of-way. Unlike the marble quarry sighting, i am certain that this is knotweed

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

© 2024 Portland State University | Contact us for questions regarding site content