Seeds of four species of Umbelliferae [Anthriscus sylvestris (L.) Hoffm., Conium maculatum L. Daucus carota, L. and Heracleum sphondylium L.] were sown separately into plots of grassland given two ...

HARRISBURG, Pa. — Invasive weed Conium maculatum, or poison hemlock, is spreading aggressively in Pennsylvania, according to experts at Penn State Extension. Poison hemlock is native to Europe, ...

Poison hemlock, Conium maculatum, is a tall, invasive, non-native that grows along trails and roads throughout Marin. It can grow to 8 feet tall with clusters of white flowers in an umbel shape. The ...

Poison hemlock (Conium maculatum L.) has been spreading like wildfire throughout Greater Columbus in recent years, and if it has taken root on your property, now may be the best time of the year to ...

LANESBORO, Minn. - The Minnesota Department of Agriculture has issued warning about the dangers of the Conium maculatum plant, commonly known as poison hemlock. The plant has been found in southeast ...

Poison hemlock (Conium maculatum) was originally brought to the United States in the 1800s as an ornamental garden plant (another good idea gone awry) and is now found throughout North America. Rogue ...