Submitter does not have a specimen
EDRR Status: Ongoing monitoring

Description of specimen

Many clumps, some of 20+ meter diameter throughout the old meandering river bottom. Exactly as treated previously, probably this distribution is due to river currents during minor annual floods. Estimate extent to be 15 acres or more, scattered colonies in berries and trees within my immediate area. Probably extends to the mouth at the Willamette through Molalla River Park. Again, nothing new, you have treated this region previously. I just noticed that this year instead of a remaining few, isolated clumps as in the past several years, it has again bloomed into a aggressively invasive problem. Once again establishing itself in what was clear for several years and not downstream of known small remaining infestations so probably indicating a source upstream toward Knights Bridge.

---

Commentary

---