These two plants might look similar, but one will cause only mild irritation while the other can kill both animals and humans ...

One of Ontario's most dangerous invasive weeds is spreading across southwestern Ontario, prompting a warning from a local ...

Wildflowers, including huge white cow parsnip blooms and golden columbines, brighten a road leading from the mountain village of Summerhaven to the gulch. Those and other colorful flowers also ...

Giant hogweed (Heracleum mantegazzianum), Spotted water hemlock (Cicada maculate), Cow parsnip (Heracleum maximum) and Wild parsnip (Pastinarca sativa). All parts of the Poison hemlock plant ...

It closely resembles cow parsnip, a smaller plant which has been confirmed to grow in Smyth, Tazewell and Wise counties in Virginia. Their similarities have caused public concern, Heffernan said.

Some plants look like toxic hemlock are medicinal, but state law says you have to pull up and dispose toxic plants. How to ...

A warning attached to a tree in Storeton Woods states: "Warning giant hogweed. Do not touch." Key features of the plant were ...