Knotweed (unknown species) (Fallopia sp.) on Apr 23, 2010
Originally reported as Japanese Knotweed (Fallopia japonica)
Submitter does not have a specimen
EDRR Status: Local expert notified
Description of specimen
On the south side of the lot next to the creek there were a handful of young knotweed plants. They were growing within a foot or two of the parking lot in the grass.
Commentary
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
Thanks again for reporting knotweed. I will forward your report to the Clatsop SWCD as they have an active Early Detection and Rapid Response program in the area. Unfortunately I think knoweed may be too far gone or out of control in Clatsop County to be counted as an early detection rapid response species, but I think people will be thankful for the information. It is still very important to keep tabs of our current invasives infestations.
The early detection species for Clatsop County are (these are the species we need help looking for):
Garlic Mustard Alliaria petiolata
False Brome Brachypodium sylvaticum
Old Man's Beard Clematis vitalba
Herb Robert Geranium robertianum
Policeman’s Helmet Impatiens glandulifera
Common Reed Phragmities australis
Pokeweed Phytolacca americana
Indigo bush Amorpha fruticosa
Spurge Laurel Daphne laureola
Shining Geranium Geranium lucidum
Common Reed Phragmities australis
If you are interested in attending a training where you can learn how to identify the early detection species for Clatsop county, email me directly at tania.siemens@oregonstate.edu, and I can give you the information. It will be on May 19th. Thanks again for reporting! Keep up the good work!
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
April 27, 2010, 9:16 a.m.
I shared your report with Dave Ambrose at the Clatsop SWCD, and her is his response:
> Thanks for passing on the information, Tania.
>
> We are aware of this patch. We've been working with the Cannon Beach for
> several years to deal with their knotweed. In the early years, they were
> reluctant to use herbicides, but have now made a council decision to allow
> them for knotweed.
>
> If possible, please send a thank you from me to the person sending in the
> report
>
> Dave Ambrose
> CSWCD
> 503-325-4571
Tania Siemens
April 28, 2010, 5:09 a.m.