
wildflower
Poison hemlock
Conium maculatum
DeadlyDo not eatcommon
Purple-splotched hollow stems, lacy leaves, white umbels. Deadly. Do not touch your mouth after handling.
A biennial that can top 8 ft. Stems are smooth, hollow, and blotched with purple. Leaves are finely divided, ferny, with a musty mouse-urine smell when crushed. Flowers are tiny white umbels like Queen Anne’s lace, but the plant has no hairy stem and no single dark floret.
- Habitat
- Ditch banks, old pastures, roadsides, creek edges throughout Dearborn County.
- Season
- Rosettes overwinter; blooms May–July.
- Size
- 4–10 ft
- Field marks
- Purple stem blotches; hairless; musty smell; white umbels
All parts are poisonous. Alkaloids paralyze the breathing muscles. Never use as a wild carrot. Call 911 and Poison Control 1-800-222-1222 if ingested.
First aid
If eaten: do not wait for symptoms. Call 911. Save a sample of the plant. Do not induce vomiting unless a clinician tells you to.