Land Plants - native

Poison Oak (Toxicodendron diversilobum) on Apr 1, 2026

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

Description of specimen

large bush of poison oak with multiple smaller ones spreading throughout area. These are right at edge of the walking path on the east side of road.

Commentary

None

Remedy

Guidance on preventing and treating exposure to Poison Oak from Oregon Extension.

Resources

Poison Oak information from OregonFlora.

Location

on Old River Road walking path along Willamette River just below Mary‘s Woods
Located on walking path slightly north of the north stairs leading up to Mary‘s Woods

Expert Reviewer

Avatar of Reviewer

Samuel Leininger
Clackamas Soil and Water Conservation District
4-County Cooperative Weed Management Area
Columbia Gorge Cooperative Weed Management Area

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