Knotweed (unknown species) (Fallopia sp.) on May 31, 2011
Submitter does not have a specimen
EDRR Status: Local expert notified
Description of specimen
I did not have a plant key with me to properly identify specific species. Dead stems look like bamboo and range up to an inch or so in diameter. Plants were found growing in large clusters close to the water in streamside sediments. Some dead plants were over 6 feet tall.
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 so much for reporting what sounds like a very large knotweed infestation. I will notify the Tillamook Bay watershed council and the Tillamook Estuary Partnership to see if they know who may be tracking knotweed in that area and if there are any control programs in place. Unfortunately, I believe knotweed is already very widespread in the Nahalem river, and few people have the capacity to address this very grave problem. However, it is still very useful to have your report as it helps land managers better track its invasion through time. Thanks again, and please do keep reporting. Other species important to keep a look out for are garlic mustard, false brome, and yellow archangel.
Thanks again and feel free to contact me with any questions!
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 2, 2011, 7:41 a.m.