The Most Dangerous Plant In Each State

2. Ohio – Poison Hemlock (Conium maculatum)

Poison hemlock thrives along Ohio’s roadsides, ditches, and fields. This tall plant resembles parsley or wild carrot, which makes it especially dangerous. It contains several potent alkaloids, including coniine, a neurotoxin that causes muscle paralysis and respiratory failure. Poison hemlock is infamous for its historical use in executions, including the death of Socrates. Ingesting even small amounts can be fatal within hours. The plant’s white umbrella-shaped flowers bloom in summer, increasing accidental exposure risks for foragers and children who mistake it for harmless wild plants.