Poison Hemlock
Conium maculatum
Family: Apiaceae (Parsley family)Native: Europe and North AfricaIdentified: Mar 23, 2026
A tall, biennial herbaceous flowering plant with hollow stems usually marked with purple spots. It has finely-divided, fern-like leaves that are bright green and triangular in shape.
Learn more about Poison Hemlock in the encyclopedia →Care instructions
This plant should not be cultivated and is considered a noxious weed in many regions. If found, it should be removed with extreme caution while wearing gloves and protective clothing to avoid skin contact. Do not burn the plant as the smoke can be toxic.