Japanese Knotweed (Fallopia japonica) on Jun 20, 2018
Submitter does not have a specimen
EDRR Status: Population treated
Description of specimen
This is knotweed that the invasive weed people have worked on before. I called for help last year, but nothing was done and it has come back more aggressively this year.
Thanks for following up about the knotweed regrowth! Yes, I am coordinating with Clean Water Services, and their contractor should be able to spray this when they are headed over to treat knotweed on Fanno Creek (probably sometime in August). I have your phone # on this report and can call you beforehand so you'll know when they are coming. I recommend that you leave the plants as is and avoid cutting them. It's easier for the herbicide applicators to spot when they bloom in August and I'm not sure there would be enough re-growth to spray if you cut them now.
Just so you know, Tualatin SWCD will be taking over managing the invasive weed program from Clean Water Services next year, so I'll be the contact person if you need to get ahold of me.
Thanks again for reaching out! Have a great day!
Kind regards,
Tyler Pedersen
Tualatin Soil & Water Conservation District
503-334-2288 Ext 111
tyler.pedersen@tualatinswcd.org
Tyler Pedersen
June 20, 2018, 5:50 a.m.