Heracleum sphondylium, commonly known as hogweed or common hogweed, is a herbaceous perennial plant in the carrot family Apiaceae, which includes fennel, cow parsley, ground elder and …

Giant hogweed (Heracleum mantegazzianum) is arguably the most dangerous invasive plant in New York State, as a a significant threat to both human and environmental health.

Aug 21, 2024 · Learn to identify giant hogweed. Discover what symptoms to look for and actions to take if someone is poisoned.

Giant hogweed is a toxic perennial (plant that has a life cycle of 2 or more years) that can grow more than 15 feet tall. It can easily be confused with the native plant cow parsnip, Heracleum maximum.

Hogweed, either of two plant species of the cow parsnip genus (Heracleum) in the parsley family (Apiaceae). Both species are herbaceous biennials or perennials and have large compound leaves. …

Jun 13, 2018 · A fully grown giant hogweed, often described as Queen Anne’s lace on steroids, has leaves that can extend 5-feet wide, thick stalks topped with feathery umbrella-like flowers - and can …

Giant hogweed is native to the Caucasus region of Eurasia. Introduced to North America as a garden plant in the early 1900s, it escaped cultivation. It is classified as a federal "noxious weed" and is …

Hogweed can be found along hedgerows and roadside verges, and on waste ground and rough grassland. It displays umbrella-like clusters of creamy-white flowers. It's native, unlike its relative, …

Sep 15, 2025 · Giant hogweed is a short-lived perennial plant, typically surviving 2 to 5 years. The hollow stems are robust (two- to four-inch diameter), hairy, ribbed, and blotched with purple.

Giant hogweed is a biennial or perennial herb in the carrot family (Apiaceae) which can grow to 14 feet or more. Its hollow, ridged stems grow 2-4 inches in diameter and have dark reddish-purple blotches.