Land Plants - invasive

Tree of Heaven (Ailanthus altissima) on Aug 21, 2026

Description of specimen

Submitter does not have a specimen

Multiple small tree of heaven popping up on the roadside as well as on Farmington in the middle of the sidewalk (similar cross streets from my recollection. Between Murray and 170th ish)

Commentary

Avatar of commenter Thanks for the report Sara. Without pictures, I am not able to confirm the report is tree of heaven, however I'm not surprised. We will put it on our list to take a look at and reach out to the landowner or appropriate road organization.

Keith Nasman
Invasive Species Technician
Tualatin Soil & Water Conservation District
keith.nasman@tualatinswcd.org

Keith Nasman
Aug. 27, 2026, 9:05 a.m.

Location

When traveling toward Hillsboro on Tualatin Valley Highway, to the right of the roadside between 160th and 170th. I have also seen it on Farmington as well.

Expert Reviewer

Avatar of Reviewer

Keith Nasman
Tualatin SWCD

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