giant hogweed

noun
plural giant hogweeds

Definition of giant hogweed

: a tall perennial herb (Heracleum mantegazzianum) of the carrot family native to the Caucasus that has a hollow, usually purple-blotched stem which can reach a height of 15 to 20 feet (4.6 to 6.1 meters) and white-flowered umbels arranged in flat-topped clusters usually over 2.5 feet (0.8 meters) in diameter and that produces an irritating sap that causes severe rashes and blistering

Note: The giant hogweed has become invasive in Canada and the U.S. after being introduced as an ornamental plant in the early 1900s.

She didn't realize she was planting poison. The plant was giant hogweed—a noxious, weed that looks like Queen Anne's lace and can give blistering, oozing rashes to anyone who touches its sap.— Noreen Gillespie Giant hogweed … stands eight feet tall displaying three-foot long coarsely divided leaves and stems crowned with huge parasols of small white flowers.— Taimi Anderson

called also cartwheel flower, giant cow parsley, giant cow parsnip, hogsbane

First Known Use of giant hogweed

1890, in the meaning defined above

Keep scrolling for more

Learn More about giant hogweed

Statistics for giant hogweed

Look-up Popularity

Time Traveler for giant hogweed

The first known use of giant hogweed was in 1890

See more words from the same year

Comments on giant hogweed

What made you want to look up giant hogweed? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a wrong name or inappropriate designation

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!