Land Plants - invasive

Japanese Knotweed (Fallopia japonica) on Apr 26, 2021

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

Description of specimen

Please see image below. Green leaves with red veins. Red stems.


Dear Mary,

Thank you so much for your report! Yes the photo does look like knotweed to me. Reporting knotweed is extremely valuable as land managers prioritize control and management for this species. Thank you! Please see the document below for information on how to identify and manage this species. Thanks so much again for reporting and let me know if you have any further questions.


Tania Siemens (she/her/hers)
Research Assistant
Don't Pack a Pest for Academic Travelers
Oregon Sea Grant
Oregon State University
cell: 541-914-0701 email:

Tania Siemens
April 27, 2021, 11:29 a.m.