Poison Hemlock identification - Ask Extension
Good morning, I think I have identified some Poison Hemlock by using the available OSU resources, however, would love an opinion from someone smarter ...
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Poison Hemlock identification #937470
Asked July 01, 2026, 11:20 AM EDT
Good morning, I think I have identified some Poison Hemlock by using the available OSU resources, however, would love an opinion from someone smarter than me. Thank you for the assistance!
Columbia County Oregon
Expert Response
You got it right, Mitch! I think you've earned the title of "Honorary Poison Hemlock Detective!"
You identified it correctly-it is Poison hemlock! The OSU resources helped, but you put the clues together. Nice job!
The hairless smooth stems with purple blotches/dots are confirm it.
Management options can be found here: https://solvepestproblems.oregonstate.edu/weeds/poison-hemlock
