View a PDF of this giant hogweed map. Giant hogweed can grow up to 15 feet tall and produce large clusters of white flowers. Because of its unique size and impressive flower head, the plant was originally introduced to Great Britain as an ornamental curiosity in the 19th century. Heracleum mantegazzianum, commonly known as giant hogweed, is a monocarpic perennial herbaceous flowering plant in the carrot family Apiaceae. The plant, known as giant hogweed… View larger map of giant hogweed sites that have been treated and eliminated. Giant Hogweed has been confirmed in 11 counties in Michigan: Kalamazoo, Branch, Calhoun, Gogebic, Ingham, Jackson, Kent, Manistee, Oakland, Ottawa and Saginaw. View larger map of known giant hogweed locations. Cowparsnip leaves can be 2-2.5 feet across, divided into three distinct, maple leaf-like segments. This invasive plant has been confirmed in several states including Maine, New York, Pennsylvania, Washington, Ore-gon, Michigan, and in August 2006, giant hogweed was confirmed in Lake County in northeast Illinois. H. mantegazzianum is also known as cartwheel-flower, giant cow parsley, giant cow parsnip, or hogsbane.In New Zealand, it is also sometimes called wild parsnip (not to be confused with Pastinaca sativa) or wild rhubarb. We would like to assist with control and eradication of giant hogweed on your property, call (360)427-9670 ext. KALAMAZOO, MI -- Only 2 percent of suspected giant hogweed plants submitted to the state agriculture department are identified as giant hogweed, meaning the plant is still rare in Michigan. attractive, giant hogweed is a public health hazard because it can cause se-vere skin irritation in susceptible people. The leaves are up to 5 feet wide, lobed and deeply incised. The plant grows 7-14 feet tall and has white flowers in an umbrella-shaped cluster up to 2.5 feet across. Giant Hogweed Michigan Map. So far it is not widely spread in MI. It’s in three counties: Ingham County (Lansing), Gogebic County (borders Wisconsin in the upper peninsula) and Berrien County (southwest lower Michigan – St. Joseph). TEXT_3. Giant hogweed reaches up to 8-20’ when in flower and has hollow, ridged stems covered in coarse white hairs and reddish-purple mottling. If a person gets the sap on their skin and their skin is exposed to sunlight it can cause chemical burns. A member of the carrot and parsley family of plants (Apiaceae), giant hogweed is native to the Caucasus region of Eurasia. Source. Giant hogweed can be found along roadsides and streams and in fields and forests. Giant Hogweed. A highly dangerous plant whose sap can cause permanent blindness was found growing in Calhoun County in southern Michigan. Giant Hogweed Its native range is in Central Asia, although it now can be found in the United Kingdom, Australia, Europe, parts of Canada and the United States. Invasive Species - (Heracleum mantegazzianum) Prohibited in Michigan Giant Hogweed is a plant that has the potential to harm humans. Game of the Week ... referring to the dangers of a giant hogweed one way you can tell the difference between a hogweed and a giant hogweed… How? An attractive but dangerous federal noxious weed. The stems are green with purple splotches and visible coarse, white hairs. Plants were found by par- Dear Property Owner, In 2006, there were fewer than 20 known sites of giant hogweed in Mason County. Giant hogweed leaves appear almost ragged, sharp-edged and unevenly lobed. TEXT_2. TEXT_1. Source. The map, created and maintained by WhatShed.co.uk, is tracking the spread of Giant Hogweed throughout the United Kingdom following the closure of the PlantTracker app. Giant hogweed is a majestic plant that can grow over 15 feet. Giant Hogweed is a member of the carrot or parsley family (Apiaceae) that was introduced into Europe and North America in the early 1900s. Although . Sports. Giant hogweed can grow to 8-14 feet tall. TEXT_4. Giant Hogweed can be found in the New England, Mid-Atlantic and Northwest areas of the country, according to Snopes. Giant hogweed originates from the Caucasus Mountains between the Black and Caspian seas by Russia - but it made its way to the U.S. by the early 20th century. It is not known to be present in Minnesota and is a prohibited noxious weed on the eradicate list . PA-Giant Hogweed (HEMA17) Swedish Virtual Flora: images & text (in Swedish) (HEMA17) Universitat Bonn: image and text (in German) (HEMA17) WA-King County Noxious Weeds (HEMA17) WA-NonNative Freshwater Plants (HEMA17) WA-The Perils of Giant Hogweed (WSU) (HEMA17) Michigan 2003 Forest Health Highlights. Leaves can be 5 feet across. Giant Hogweed Statewide Distribution Map. Giant hogweed, or Heracleum mantegazzianum is considered a noxious weed by the federal government. While it may look pretty, it’s actually quite harmful – so never touch it! Giant hogweed: Not widely spread in Michigan Landscaping. Giant hogweed's toxic sap leaves victims with horrific burns … Giant hogweed Heracleum mantegazzianum Giant hogweed (Heracleum mantegazzianum) is an invasive plant.It is a native of Caucasus and was first detected in North America in the early 1900's. WAOW 1908 Grand Avenue Wausau, WI 54403 News Tips: 715-842-9293 or news@waow.com Also known as Cow Parsley, this weed grows to 6 to 16 feet high and has a dark red stem up to 3 inches in diameter. It was most likely spread to new areas as an ornamental because its unique two foot diameter flowers and giant size make it … 592 or email at patriciag@co.mason.wa.us. TEXT_5. Worse than poison ivy: How to identify, report dangerous hogweed . Giant Hogweed is a member of the carrot family that looks a lot like Queen Anne’s lace, except much larger. Asia, giant hogweed (Hera-cleum mantegazzianum), has been introduced to Europe, Canada and the United States. Have you seen this plant in Michigan? THIS map reveals the hot spots where Britain's most dangerous plant is growing out of control. Giant hogweed is a native of the Caucasus Mountain region between the Black and Caspian Seas. About Giant Hogweed. It is native to the Caucasus region of Eurasia. It was later transported to the United States and Canada as a showpiece in arboreta and Victorian gardens (one of the first North American planting… Leaves have an almost velvety appearance from the soft hairs on them. In fact, Giant Hogweed can grow as high as 14ft high and 5ft wide. The following letter has been mailed out to property owners in Mason County. Map Room. Leaves. It has been found in North … Hogweed is hazardous. It is an herbaceous biennial or monocarpic perennial that grows as a low-lying bushy rosette for at least the first year. Closings. TB found in Oscoda County beef herd Michigan Farm News. Giant Hogweed soon escaped from cultivation Giant hogweed has been in the news a lot in recent years and is intriguing and alarming because it is so big and the sap is very toxic. The plant is named after the mythological god Hercules (he of robust size and strength). Its massive size and imposing appearance made it desirable for arboretums and gardens. Source. 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