Land Plants - invasive

Knotweed (unknown species) (Fallopia sp.) on Nov 6, 2008

Originally reported as Japanese Knotweed (Fallopia japonica)

Submitter does not have a specimen

Description of specimen

The patch is approx. 8 ft. in diameter now with multiple stalks approx. 8 ft. tall. It is growing just off the north shoulder (downhill side of the road). Very easy to see. I could mark with flagging tape if you let me know. Sorry for the quality of my photo. It is a bit out of focus as I had to take it while passing by in my car.

Commentary

I believe this is the prime time to inject herbicide into the stalks.

Reporter
Nov. 6, 2008, 10:03 a.m.

Mr. Evans,
The landowner has been contacted to alert them of their Knotweed infestation. We are awaiting their response. I will keep you aprised of their progress. Thank you for your efforts! -Mary Logalbo, Conservation Planner/Technician, West Multnomah Soil & Water Conservation District

Mary Logalbo
Nov. 19, 2008, 5:32 a.m.