Land Plants - invasive

Poison Hemlock (Conium maculatum) on Jun 14, 2025

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

Description of specimen

A few tall poison hemlock plants, one was over 10 feet tall. They have the purple variegation on smooth stalks, and white Queen Anne’s lace like flowers. This was seen on May 24, 2025.

Commentary

Poison Hemlock (Conium maculatum) contains highly poisonous alkaloids toxic to mammals. Human deaths have occurred from harvesting and consuming the roots as wild carrots or parsnips. Upon removal, wear gloves, jeans, boots, and a long sleeve shirt. Thank you very much for your king observation.
Michael Blankenship, TCSWCD

Michael Blankenship
June 16, 2025, 2:17 a.m.

Resources

King County, WA: Poison Hemlock

Location

On the south side of the playground, in the sloped marsh area

Expert Reviewer

Michael Blankenship
Tillamook Soil & Water Conservation District

© 2025 Portland State University | Contact us for questions regarding site content