Conium maculatum, commonly known as hemlock (British English) or poison hemlock (in North America), is a highly poisonous flowering plant in the carrot family Apiaceae. The plant is …

Apr 6, 2025 · In the first year, poison hemlock grows in a large rosette of basal leaves up to 2 feet long. The dark green leaves are alternate, mostly triangular, lacy, and deeply divided. The …

Nov 1, 2024 · Poison hemlock is native to northern Europe, western Asia, and North Africa and it was introduced to North America as an ornamental back in the 1800s. Over time, this weed …

Poison-hemlock is commonly called deadly hemlock, poison parsley, spotted hemlock, European hemlock, and California or Nebraska fern. Poison-hemlock has white flowers that grow in small …

Poison hemlock (Conium maculatum) is a highly toxic plant that’s a member of the carrot family. It’s commonly mistaken for wild carrot, wild parsnip or wild parsley.

Sep 19, 2025 · Poison hemlock can reach up to 6 feet in height. The white flowers are produced throughout the summer from June into August. Individual flowers are small but clustered in an …

Native to Europe, western Asia, and North America, poison hemlock (Conium maculatum) is now naturalized in almost every state in the United States. It was introduced in the 1800s as a …

Nov 6, 2025 · Poison hemlock, (Conium maculatum), poisonous herbaceous plant of the parsley family (Apiaceae). Poison hemlock is native to Europe and North Africa and has been …

Sep 15, 2024 · What Is Poison Hemlock? Poison hemlock (Conium maculatum) is a weedy plant that can typically be found in or near bike paths, ditches, farms, fields, rivers, and railroads.

May 14, 2025 · It's the season once again for one of the deadliest plant in North America, also known as poison hemlock. Here's what to know.