(Thladiantha dubia)
A biennial herb. The three to 10-foot tall stems are hollow, hairless, ridged with reddish-purple mottling on the lower limb and branched extensively. Other names for this plant include common names: deadly hemlock, fool's parsley, spotted hemlock, spotted parsley.
Ecological Threat:
- It invades habitats from roadsides, fields, stream banks, disturbed areas, riparian woodlands and floodplains.
- An individual plant can produce over 30,000 seeds.
- All parts of the plant are toxic to animals and humans.
POISON HEMLOCK RESOURCES:
Deadly Poison Hemlock Is Rapidly Colonizing Wisconsin and Minnesota Roadsides