By Andi Anderson
Poison hemlock is now blooming across many parts of the state, drawing attention due to its toxic nature and dangerous lookalikes. This plant belongs to the Apiaceae family, which also includes wild carrot (Queen Anne’s lace), wild parsnip, cow parsnip, and giant hogweed.
These related plants often share habitats and features, making identification challenging. Poison hemlock typically grows along roadsides, pastures, ditches, forest edges, and fence lines. It can appear in both disturbed and undisturbed areas.
Key traits to identify poison hemlock include its finely divided fern-like leaves, which can be confused with those of wild carrot. However, a distinguishing feature is its hollow, hairless stem that often has purple spots or blotches. In contrast, wild carrot stems are hairy and solid.
Poison hemlock is extremely toxic to humans and animals. All parts of the plant contain toxic alkaloids that can cause respiratory failure if ingested. Even touching the plant and then touching the mouth or eyes can be dangerous. For livestock and pets, eating even small amounts can be fatal.
Experts urge caution when dealing with unknown plants in the Apiaceae family. Avoid mowing or burning poison hemlock, as this may spread the toxins. Instead, controlled herbicide use is often recommended for safe management.
Raising awareness about this plant is essential during the summer bloom season. Proper plant identification helps prevent health risks and supports safer environments in both rural and suburban landscapes.
Photo Credit: gettyimages-dmaroscar
Categories: Ohio, Sustainable Agriculture