| Author | L. | |
| Distribution | Mostly in the Piedmont, scattered in the Mountains, scarce in the Coastal Plain. First collected in 1949 in waste ground west of Greensboro, Guilford County. The Anson record is a photo of a robust plant at iNat website by Becky Dill.
Native of Eurasia; in N.A. essentially throughout. | |
| Abundance | Uncommon to locally fairly common in the Piedmont, rare to uncommon in the Mountains and Coastal Plain. | |
| Habitat | Roadsides, pastures, fencerows, creek and stream banks, waste ground, yard weed, railroad. | |
| Phenology | Flowering and fruiting May-July. | |
| Identification | Poison-hemlock is a rank plant up to 6 feet tall, but often only 3-5 feet tall. Stems typically are spotted and glabrous. The leaves are large, cut fernlike, the outline triangular, the segments with narrow lobes. The inflorescences are prominent, compound, the flowers white. All parts are toxic. The somewhat similar Cicuta maculata has much broader leaflets that are not cut so deeply as to look "lacy". | |
| Taxonomic Comments | | |
| Other Common Name(s) | | |
| State Rank | SE | |
| Global Rank | G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | FACW link |
| USACE-emp | FACW link |
