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 …

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 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 …

Giant hogweed is a regulated Class A noxious weed. This means eradication is required state-wide. Giant hogweed is also on the Washington quarantine list. Giant hogweed is known as …

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 …

Jan 28, 2025 · Giant hogweed is most easily identified by its size. It can grow to be 15 to 20 feet tall, with leaves up to 5 feet in width and stems up to 4 inches in diameter.

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.

Jun 9, 2025 · Hogweed may look impressive, but don’t be fooled—this towering plant is toxic, invasive, and dangerous to both people and pets. From severe skin burns to rapid spreading …

In her 1985 novel Curse of the Giant Hogweed, popular mystery author Charlotte MacLeod places her established character Peter Shandy and his colleagues in a fantasy version of Wales to …

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 …