Land Plants - invasive

Milk Thistle (Silybum marianum) on Feb 4, 2026

Submitter does not have a specimen
EDRR Status: Population treated

Description of specimen

Large thistle rosette

Commentary

None

Location

In the grass at the very beginning of a trail through the powerline park. To the right of the bollards

Expert Reviewer

Avatar of Reviewer

Tyler Pedersen
Tualatin Soil and Water Conservation District

Maintained by Oregon State University | Contact us for questions regarding site content