A toxic plant with a lethal reputation is popping up along a popular Green Township bike trail, and a local arborist is urging families to steer clear. Tall stands of poison hemlock, with their soft, feathery look, were spotted this week near the path, raising alarms about a plant whose juices can cause partial organ failure or even death if they are inhaled, ingested or absorbed through the skin. Children and pets are considered especially vulnerable to accidental exposure. The warning comes just as the weed starts to flower across Ohio, when its white blooms can fool people into thinking it is a harmless wild carrot.
Ronald Rothhaas, who runs a Cincinnati tree-care business, told FOX19 that poison hemlock is “considered to be the most poisonous plant in the state of Ohio,” and he stressed that the real danger is not a simple skin rash but contact with the plant’s toxic sap. He said he posts seasonal warnings every year around this time because the plants become much easier to spot as they bloom along trails, roadsides, and other disturbed areas.
How to spot it
Poison hemlock typically grows 4 to 6 feet tall, with finely divided, parsley-like leaves and umbrella-shaped clusters of small white flowers. One of the clearest telltale signs is the purple blotches that often appear on its smooth, hollow stems, a key difference from Queen Anne’s lace, according to the Minnesota DNR.
Safer removal and when to call for help
Landowners are urged not to mow or chip mature poison hemlock and instead to remove or treat plants before they go to seed, according to Ohio State University Extension’s BYGL. Mechanical cutting can throw plant particles into the air, so extension guides often recommend herbicide treatments or professional removal, depending on the situation. If someone swallows plant material or develops worrying symptoms after possible exposure, call Poison Help at 1-800-222-1222 or visit PoisonHelp.org for immediate guidance…