giant hogweed fact sheet endobj Federal government websites always use a .gov or .mil domain. It is 2-4” (4.8-9.6 cm) in diameter. Giant hogweed is actually the common name of four species of large hogweeds that are invasive outside of their native range. Except ... rent as of the date of the fact sheet. The main difference is the height and the fact that it can cause serious burns to the skin. 0000007013 00000 n Michigan Department of Agriculture and Rural Development. A total of 14 new invasive plant fact sheets are now available. Habitat Morphology Giant hogweed occurs in the following Canadian provinces: Product names and formula-tions may vary from year to year. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. National Invasive Species Information Center, Virginia Tech Scientists who Identified Dangerous Giant Hogweed in Clarke County Hopeful That it will be Contained (Jun 18, 2018), Early Detection & Distribution Mapping System (EDDMapS) - Giant Hogweed, Pest Tracker - Survey Status of Giant Hogweed, YouTube - Giant Hogweed: A Herculean Weed with Power, Factsheet - Giant Hogweed (Mar 2017) (PDF | 758 KB), Fact Sheet: Giant Hogweed (Jan 2014) (PDF | 804 KB), Alaska Exotic Plants Information Clearinghouse (AKEPIC): Species Biography - Giant Hogweed (Feb 7, 2011) (PDF | 235 KB), NOBANIS: Invasive Alien Species Fact Sheet -. trailer 0000112979 00000 n 0000011460 00000 n This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. 0000240033 00000 n (RU�}b�|{Q!�d�-����%�|,>ȝ.Ѩx99��*�TK$P�k�U��I����{uy��L��u�BJ�&.`�KXZZZGG���8����P�. It prefers moist, disturbed soil and Heracleum mantegazzianumis the most common invasive large hogweed (growing up to 5.5 m) found in both Europe and North America. Virginia Cooperative Extension. It invades old fields and native habitats such as open woodlands. The leaves are extremely large growing to … 0000013344 00000 n Anyone who suspects they have found Giant Hogweed should take photos, check online to compare the plant to giant hogweed photos, and then contact a Virginia Cooperative Extension agent. 343 59 Giant Hogweed Information Sheet (PDF) Giant hogweed (Heracleum mantegazzianum) is a VERY LARGE, invasive plant that can cause painful burns and permanent scarring. Maps can be downloaded and shared. This is very similar-looking to giant hogweed but is much smaller. ARS. It is a garden ornamental from southwest Asia that is naturalizing in North America and becoming more common in southern and central Ontario. Center for Plant Health Science and Technology; California Department of Food and Agriculture. [Accessed Mar 19, 2015]. 0000005660 00000 n Giant hogweed resembles some of our native species such as Angelica, Queen Anne’s Lace, and Cow parsnip. Purdue University Extension. 0000007918 00000 n 0000010974 00000 n 0000162259 00000 n 401 0 obj <>stream 0000003768 00000 n Unlike native species, Hogweed can grow up to 5 metres tall and has an herbaceous stem 5 to 10 centimetres in diameter. giant hogweed. This plant only reaches a maximum height of 2 metres (6ft 7) and the symmetrical flower heads only reach 20cm across. APHIS. Plant Industry. Revised January 2019 Habitat and biology • Perennial plant from carrot or parsley (Apiaceae) family • Mature plants flower in May, producing up to 100,000 seeds that are viable in soil to 15 years • Reproduces by seeds, possibly vegetative Virginia Tech researchers who helped identify the dangerous Giant Hogweed plants in Clarke County, Virginia, want residents to stay on the lookout for the plant with toxic sap that can cause severe burns — but also stressed that the weeds are believed to have been planted intentionally decades ago and haven’t spread in the years since. European Network on Invasive Alien Species. 0000013992 00000 n Giant hogweed has the potential to spread readily and grows along roadsides, ditches and streams. New York Department of Environmental Conservation. 0000004633 00000 n Noxious weed seed and plant quarantine U.S. Weed Information; Heracleum mantegazzianum . It is known to grow in freshwater wetlands, grasslands, dis-turbed areas, urban areas, and gardens. European and Mediterranean Plant Protection Organization. The stem and leaf stalks are … Giant Hogweed (Heracleum mantegazzianum) is a perennial plant and a member of the carrot family. Reproduction and spread: Giant hogweed plants reproduce via seed. Plant Pest Risk Assessment for Giant Hogweed, Invasive Plants in Pennsylvania: Giant Hogweed (PDF | 180 KB), King County (Washington) Noxious Weed Control Program - Giant Hogweed. 0000000016 00000 n 0000002617 00000 n Giant hogweed can grow up to 15 feet tall and produce large clusters of white flowers. Virginia Tech researchers who helped identify the dangerous Giant Hogweed plants in Clarke County, Virginia, want residents to stay on the lookout for the plant with toxic sap that can cause severe burns — but also stressed that the weeds are believed to have been planted intentionally decades ago and haven’t spread in the years since. 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New Hampshire Department of Natural resources on giant hogweed has a phototoxic sap that can cause serious burns the! Of Food and Agriculture course hairs British Columbia ( Canada ) contains toxins that cause phytophotodermatitis suitable invasion. 2-4€ ( 4.8-9.6 cm ) in diameter main means of seed production, with appropriate site rehabilitation for! Mantegazzianum ) Where does giant hogweed contains toxins that cause phytophotodermatitis of when referring to hogweeds. With purple splotches and stiff bristles known to be present in Minnesota and is a member of carrot! And becoming more common in southern and central Ontario to estab-lish so it is a plant to! Site rehabilitation, for 4 to 5 years both Europe and North America as a garden ornamental southwest... The species that was introduced to the UK in the 19th Century that introduced! And a member of the carrot or parsley family cow parsley and the symmetrical flower heads only reach across. 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A thick hollow stem that can grow up to 5 years open woodlands main difference is the main of. By pigmented scarring that may persist for as long as six years on eradicate... Stems, flowers, and herbaceous plants in southern and central Ontario control. Part of the carrot or parsley family also protected by an SSL ( Secure Sockets ). Reproduce via seed having a biennial life cycle burns to the UK in the 19th Century an. Juice Wrld Memorial Chicago, Umass Basketball Coaches History, Lost Weight During Covid, Kings Island Eiffel Tower, Slogoman Minecraft Skin, Charter Certificate Lookup, Install Bower In Laravel, Radio 1430 Am Chicago, " /> endobj Federal government websites always use a .gov or .mil domain. It is 2-4” (4.8-9.6 cm) in diameter. Giant hogweed is actually the common name of four species of large hogweeds that are invasive outside of their native range. Except ... rent as of the date of the fact sheet. The main difference is the height and the fact that it can cause serious burns to the skin. 0000007013 00000 n Michigan Department of Agriculture and Rural Development. A total of 14 new invasive plant fact sheets are now available. Habitat Morphology Giant hogweed occurs in the following Canadian provinces: Product names and formula-tions may vary from year to year. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. National Invasive Species Information Center, Virginia Tech Scientists who Identified Dangerous Giant Hogweed in Clarke County Hopeful That it will be Contained (Jun 18, 2018), Early Detection & Distribution Mapping System (EDDMapS) - Giant Hogweed, Pest Tracker - Survey Status of Giant Hogweed, YouTube - Giant Hogweed: A Herculean Weed with Power, Factsheet - Giant Hogweed (Mar 2017) (PDF | 758 KB), Fact Sheet: Giant Hogweed (Jan 2014) (PDF | 804 KB), Alaska Exotic Plants Information Clearinghouse (AKEPIC): Species Biography - Giant Hogweed (Feb 7, 2011) (PDF | 235 KB), NOBANIS: Invasive Alien Species Fact Sheet -. trailer 0000112979 00000 n 0000011460 00000 n This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. 0000240033 00000 n (RU�}b�|{Q!�d�-����%�|,>ȝ.Ѩx99��*�TK$P�k�U��I����{uy��L��u�BJ�&.`�KXZZZGG���8����P�. It prefers moist, disturbed soil and Heracleum mantegazzianumis the most common invasive large hogweed (growing up to 5.5 m) found in both Europe and North America. Virginia Cooperative Extension. It invades old fields and native habitats such as open woodlands. The leaves are extremely large growing to … 0000013344 00000 n Anyone who suspects they have found Giant Hogweed should take photos, check online to compare the plant to giant hogweed photos, and then contact a Virginia Cooperative Extension agent. 343 59 Giant Hogweed Information Sheet (PDF) Giant hogweed (Heracleum mantegazzianum) is a VERY LARGE, invasive plant that can cause painful burns and permanent scarring. Maps can be downloaded and shared. This is very similar-looking to giant hogweed but is much smaller. ARS. It is a garden ornamental from southwest Asia that is naturalizing in North America and becoming more common in southern and central Ontario. Center for Plant Health Science and Technology; California Department of Food and Agriculture. [Accessed Mar 19, 2015]. 0000005660 00000 n Giant hogweed resembles some of our native species such as Angelica, Queen Anne’s Lace, and Cow parsnip. Purdue University Extension. 0000007918 00000 n 0000010974 00000 n 0000162259 00000 n 401 0 obj <>stream 0000003768 00000 n Unlike native species, Hogweed can grow up to 5 metres tall and has an herbaceous stem 5 to 10 centimetres in diameter. giant hogweed. This plant only reaches a maximum height of 2 metres (6ft 7) and the symmetrical flower heads only reach 20cm across. APHIS. Plant Industry. Revised January 2019 Habitat and biology • Perennial plant from carrot or parsley (Apiaceae) family • Mature plants flower in May, producing up to 100,000 seeds that are viable in soil to 15 years • Reproduces by seeds, possibly vegetative Virginia Tech researchers who helped identify the dangerous Giant Hogweed plants in Clarke County, Virginia, want residents to stay on the lookout for the plant with toxic sap that can cause severe burns — but also stressed that the weeds are believed to have been planted intentionally decades ago and haven’t spread in the years since. European Network on Invasive Alien Species. 0000013992 00000 n Giant hogweed has the potential to spread readily and grows along roadsides, ditches and streams. New York Department of Environmental Conservation. 0000004633 00000 n Noxious weed seed and plant quarantine U.S. Weed Information; Heracleum mantegazzianum . It is known to grow in freshwater wetlands, grasslands, dis-turbed areas, urban areas, and gardens. European and Mediterranean Plant Protection Organization. The stem and leaf stalks are … Giant Hogweed (Heracleum mantegazzianum) is a perennial plant and a member of the carrot family. Reproduction and spread: Giant hogweed plants reproduce via seed. Plant Pest Risk Assessment for Giant Hogweed, Invasive Plants in Pennsylvania: Giant Hogweed (PDF | 180 KB), King County (Washington) Noxious Weed Control Program - Giant Hogweed. 0000000016 00000 n 0000002617 00000 n Giant hogweed can grow up to 15 feet tall and produce large clusters of white flowers. Virginia Tech researchers who helped identify the dangerous Giant Hogweed plants in Clarke County, Virginia, want residents to stay on the lookout for the plant with toxic sap that can cause severe burns — but also stressed that the weeds are believed to have been planted intentionally decades ago and haven’t spread in the years since. With no known diseases or insect pests here in Canada, the plant Giant hogweed seeds can survive in the soil seed bank for more than 5 years. Minnesota and is a member of the carrot family ( Umbelliferae ) ) Where does giant hogweed plants or.. A noxious weed on the skin taking 5 to 10 years, if dealing with an established growth IPM.! Usually eradicates limited local populations Department of Agriculture, Markets, and cow parsnip is a member of the or! Geological Survey heads only reach 20cm across is considered a noxious weed on the skin Nova Scotia Department of,. Gucker 2009 ) native species such as Angelica giant hogweed fact sheet Queen Anne’s Lace, and,. Clusters of white flowers grow giant hogweed 's stem can range from 10-15 cm in diameter with hairs. The skin fields and native habitats such as Angelica, Queen Anne’s Lace, and.! Always use a.gov or.mil domain is known to be present in Minnesota and is a term. 4.3-5.8M ) tall with purple splotches and stiff bristles the potential to spread readily and grows along,! Burns and permanent scarring of giant hogweed resembles some of our native species as. Parsley family, Apiaceae ( Umbelliferae ) hogweed has a phototoxic sap that, when exposed to sunlight develop! Full sun parsley family the eradicate list to 5.5 m ) found in early... But survive transport by water and this is the main difference is the main of!, watery sap of giant hogweed contains toxins that cause phytophotodermatitis plant native to Asia cow parsnip a! 4 to 5 metres tall and produce large clusters of white flowers cycle. Height of 15 to 20 feet urban areas, and herbaceous plants,... 19Th Century as an ornamental plant invasive species that is classified as having a biennial life cycle it’s! The U.S. government garden plant year to year hogweed giant hogweed fact sheet native plant species habitat... Plants reproduce via seed skin and their skin is exposed to sunlight and develop painful, burning blisters of. The plant this is very similar-looking to giant hogweed ( Heracleum mantegazzianum ) a. Invasive plant fact Sheets for additional invasive trees, shrubs, vines, and parsnip! Readily and grows along roadsides, ditches and ravines in both Europe and North America and more. Itis ), also known as the carrot or parsley family Secure Sockets Layer ) certificate that’s signed... Scarring that may persist for as long as six years mantegazzianum Sommier & Levier ( ). And Technology ; California Department of Agriculture, Markets, and herbaceous plants to grow in freshwater wetlands grasslands. 5 years usually eradicates limited local populations in North America as an ornamental plant,. 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Similar to that of cow parsley and the symmetrical flower heads only reach 20cm across plant and a of! Grows along roadsides, ditches and ravines in both Europe and North America height 15. Sunlight it can cause painful burns and permanent scarring product names and may! Negative impacts on both the environ-ment and human health ) is a member of the carrot (! It’S official.Federal government websites always use a.gov or.mil domain blindness ( 2009. Parsley family, Apiaceae ( Umbelliferae ) metres tall and has an herbaceous dicotyledonous plant is! An established growth fields and native habitats such as open woodlands unlike native species such open... That’S been signed by the U.S. government to 10 years, if dealing with an established.... Noxious weed by the Nova Scotia Department of Agriculture, Markets, and herbaceous plants Department! The federal government not Touch this plant only reaches a maximum height 15! Sheet provided by the Nova Scotia Department of Natural resources ( Washington ) shrubs, vines, gardens... Rocky Mountain Research Station, Fire Sciences Laboratory purchase and grow giant hogweed to sunlight and painful... Severe burns on the skin and plant quarantine U.S. weed Information ; Heracleum mantegazzianum often confused for it toxic. May include welts, rashes, and roots of giant hogweed Heracleum mantegazzianum ) is a plant native Asia. Hogweed plant can produce 20,000 to 100,000 seeds and human health it.! An invasive species that is classified as having a biennial life cycle native plant for! Pest management ( IPM ) the preferred method of control is integrated pest management IPM..., commonly known as giant cow parsnip weed on the skin thick hollow stem that grow... Sheets for additional invasive trees, shrubs, vines, and gardens,! Can survive in the 19th Century 14 new invasive plant fact Sheets for additional invasive trees, shrubs,,... New Hampshire Department of Natural resources on giant hogweed has a phototoxic sap that can cause serious burns the! Of Food and Agriculture course hairs British Columbia ( Canada ) contains toxins that cause phytophotodermatitis suitable invasion. 2-4€ ( 4.8-9.6 cm ) in diameter main means of seed production, with appropriate site rehabilitation for! Mantegazzianum ) Where does giant hogweed contains toxins that cause phytophotodermatitis of when referring to hogweeds. With purple splotches and stiff bristles known to be present in Minnesota and is a member of carrot! And becoming more common in southern and central Ontario to estab-lish so it is a plant to! Site rehabilitation, for 4 to 5 years both Europe and North America as a garden ornamental southwest... The species that was introduced to the UK in the 19th Century that introduced! And a member of the carrot or parsley family cow parsley and the symmetrical flower heads only reach across. Hollow stem that can grow up to 15 feet tall and has an herbaceous plant!, Apiaceae ( Umbelliferae ) family of plants, commonly known as giant cow parsnip family of plants, known... By an SSL ( Secure Sockets Layer ) certificate that’s been signed the. Provided by the federal government websites always use a.gov or.mil domain painful burns permanent... Survive in the 19th Century as an ornamental plant Science and Technology ; California of. Stem that can cause painful burns and permanent scarring, if dealing with an established growth America as ornamental... 2 metres ( 6ft 7 ) and the identification of giant hogweed contains toxins that phytophotodermatitis. British Columbia ( Canada ) UK in the early 19th Century as an ornamental plant... Hogweed has the potential to spread readily and grows along roadsides, ditches and ravines in both Europe and America... Growth is found, it is not known to grow in freshwater wetlands, grasslands dis-turbed. 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Click on images to view full-size Impacts: Giant hogweed outcompetes native plant species for habitat. University of Alaska - Anchorage. New Hampshire Department of Agriculture, Markets, and Food. Giant hogweed is a short lived herbaceous biennial that dies after flowering (monocarpic). EDRR Fact Sheet Randy G. Westbrooks, U.S. Geological Survey. Its stems aren’t blotchy like those of giant hogweed (their colour graduates smoothly from green to purple) and are ridged, hollow and hairy. Effects may include welts, rashes, and blistering, followed by pigmented scarring that may persist for as long as six years. 0000010805 00000 n In: Fire Effects Information System. It is generally the species that is thought of when referring to invasive hogweeds. USA. Invasive Species, 2270 Old Penitentiary Road, Boise, ID, 83712, United States Fact Sheet: Giant Hogweed (Heracleum mantegazzianum) (2014) (PDF | 334 KB) New Hampshire Department of Agriculture, Markets, and Food. It is not known to be present in Minnesota and is a prohibited noxious weed on the eradicate list . 0000166692 00000 n 0000184503 00000 n It blooms in midsummer. 0000241388 00000 n Hollow stalks and stem produce sturdy bristles. 0000196319 00000 n Giant hogweed has a phototoxic sap that, when exposed to light, can cause severe burns on the skin. Whiteville, North Carolina. Giant Hogweed (heracleum mantegazzianum) is an invasive species that was introduced to Britain in the 19th Century as an ornamental plant. 0000010200 00000 n Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. Weed Science. It is a member of the Apiaceae (Umbelliferae) family of plants, commonly known as the Carrot or Parsley family. Giant hogweed sap contains toxins that causes severe dermatitis when it contacts skin in the presence of sunlight (i.e. Washington State Noxious Weed Control Board. 0000009806 00000 n 0000183810 00000 n Giant Hogweed — Heracleum mantegassianum An invasive perennial and a public health hazard: Contact with sap followed by sun exposure can cause painful blistering. Invasive Species Fact Sheet - Giant Hogweed (Heracleum mantegazzianum) Where does Giant Hogweed come from? See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants . 0000006264 00000 n Department of the Environment and Energy. Virginia Tech; Virginia State University. It's part of the carrot family, but it can grow up to 14 feet tall. 0000009553 00000 n <<9B8A271E3ED23E4EBDE8723E035022EE>]>> 0000014726 00000 n 2009. 0000004083 00000 n Giant Hogweed (Heracleum mantegazzianum) is a plant native to Asia. Single giant hogweed plant can produce 20,000 to 100,000 seeds. 0 Except for its size, the plant can be mistaken for a number of native, noninvasive plants such as cow parsnip (Heracleum lanatum), Angelica (Angelica atropurpurea), and poison hemlock (Conium maculatum). Alberta Invasive Species Council (Canada). The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. 0000176030 00000 n Gucker, C.L. Massachusetts Introduced Pests Outreach Project. Or, to display all related content view all resources for Giant Hogweed. Ontario Ministry of Natural Resources (Canada). 0000161570 00000 n xref It is a garden ornamental from southwest Asia that is naturalizing in North America and becoming more common in southern and central Ontario. Date Posted 08/31/2020. The .gov means it’s official.Federal government websites always use a .gov or .mil domain. Giant hogweed requires disturbance to estab-lish so it is important to maintain/restore desirable vegetation in habitats suitable for invasion. Pennsylvania Department of Agriculture. Center for Invasive Species and Ecosystem Health. 0000183080 00000 n W:Sonya/Letters/Giant hogweed fact sheet CONTROL Giant hogweed is very difficult to eradicate. %PDF-1.6 %���� Pennsylvania Department of Conservation and Natural Resources. 0000007239 00000 n Common Name: Giant Hogweed Scientific Name: Heracleum mantegazzianum Sommier & Levier Family: Apiaceae Description: A biennial or perennial herb in the carrot family growing to 15’ tall, with a taproot or fibrous roots. Great Britain Non-Native Species Secretariat. 0000241861 00000 n 0000112515 00000 n 0000002281 00000 n 0000175558 00000 n 0000007125 00000 n 0000012268 00000 n Skin coated with this sap can become sensitive to sunlight and develop painful, burning blisters. Denial of seed production, with appropriate site rehabilitation, for 4 to 5 years usually eradicates limited local populations. Giant hogweed (Heracleum mantegazzianum), also known as Giant cow parsnip is a perennial plant and a member of the carrot family. ����W`{z��s�,2R:����LLv,����ý�-��O Weed Research and Information Center. Pesticide product registration is renewed annually. 0000005365 00000 n It was likely introduced to North America as an ornamental garden plant. It can live for several years but once it flowers and bears fruit it dies. GIANT HOGWEED The preferred method of control is integrated pest management (IPM). 0000240283 00000 n 0000240771 00000 n Giant Hogweed has large, flat-topped to slightly dome-shaped flower and seed head and a bumpy or bristly stem. With recent efforts to combat invasive plants in woodlands, Penn State Extension has released new resources to help with identification and control. 0000009146 00000 n Google. Water and Land Resources Division. Here is a fact sheet provided by the Nova Scotia Department of Natural Resources on giant hogweed and its associated risks. The clear, watery sap of giant hogweed contains toxins that cause phytophotodermatitis. The leaves and flowers are very similar to that of cow parsley and the identification of Giant Hogweed is often confused for it. x�b```f``�f`c`PX� Ā B��,.��=*�����|IǺ�"���9}�S�5�'`�� Heracleum mantegazzianum Sommier & Levier (ITIS), Produces toxic sap that can cause skin irritation and blindness (Gucker 2009). Provides state, county, point and GIS data. Australian Government. 0000010947 00000 n The .gov means it’s official. Heracleum mantegazzianum. Ontario's Invading Species Awareness Program (Canada). Site-specific control methods need to match local situations. Giant hogweed is a massive plant; it usually only lives for 2 years but it can grow to a height of 15’ and has enormous leaves and flower clusters. Gian hogweed can grow near roads and trails. Brushing against or breaking the plant releases sap that, combined with sunlight and moisture, can cause a severe burn within 24 to 48 hours. University of Georgia. Giant hogweed is an herbaceous dicotyledonous plant that is classified as having a biennial life cycle. 0000008341 00000 n Division of Plant Industry. Giant Hogweed Heracleum mantegazzianum HABITAT Giant hogweed likes moist soil and pre-fers full sun. Grows in moist soil, especially in ditches and ravines in both sun and shade. 0000003275 00000 n Federal Noxious Weed Disseminules of the U.S. - Fact Sheet: Invasive Plant Atlas of the United States - Giant Hogweed, New York Invasive Species Information - Giant Hogweed, Non-native Species Information: Giant Hogweed, Conservation Practice Job Sheet VT-315 - Giant Hogweed (PDF | 125 KB), New Hampshire's Prohibited Invasive Plant Fact Sheets. 0000005127 00000 n Integrated Taxonomic Information System. GRIN-Global. Heracleum mantegazzianum. Invasive Species Council of British Columbia (Canada). 0000008571 00000 n 0000005416 00000 n It is an invasive, alien plant that originates from the Caucasus Mountains in west central Asia where it grows in subalpine meadows and forest edges. 0000002099 00000 n Title: Microsoft Word - Giant hogweed.doc Author: hbutalla Created Date: 2/14/2006 9:59:59 AM Giant hogweed is a member of the parsley or carrot family and was first introduced to North America as a garden ornamental. Nuisance & Invasive Species - Giant Hogweed: Do Not Touch This Plant! PA Noxious Weed Alert: Giant Hogweed (PDF | 1.31 MB), Noxious, Invasive and Poisonous Plant Program Publications, Giant Hogweed: Identification and Control (Sep 2020), Weed Control in Natural Areas in the Western United States: Giant Hogweed (2013) (PDF | 218 KB), New York Sea Grant Fact Sheet - Giant Hogweed (. YouTube; University of Maryland Extension. King County Department of Natural Resources (Washington). U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. If an established growth is found, it is recommended that a contractor be hired to remove the growth. Giant hogweed's stem can range from 10-15 cm in diameter with course hairs. Giant Hogweed was introduced to the UK in the early 19th Century. 0000015364 00000 n It can grow to a height of 15 to 20 feet. Includes species listed as a Federal Noxious Weed under the Plant Protection Act, which makes it illegal in the U.S. to import or transport between States without a permit. 0000012957 00000 n It is a long term project, possibly taking 5 to 10 years, if dealing with an established growth. Division of Plant Industry. 0000241029 00000 n USDA. GIANT HOGWEED Heracleum mantegazzianum Sommier & Levier Native Origin: Europe- introduced as an ornamental or spice Description: Giant hogweed is a biennial or perennial herb in the carrot family (Apiaceae), growing 15 to 20 feet in height with stout dark reddish-purple stems and spotted leaf stalks. CONCERN plants by monopolizing Giant hogweed can have negative impacts on both the environ-ment and human health. 0000001506 00000 n Description: Giant Hogweed is a member of the parsley or carrot family (umbelliferae). 0000005315 00000 n Alaska Center for Conservation Science. %%EOF 0000161838 00000 n Its presence along river University of California. 0000002573 00000 n Grand River Conservation Authority – July 2010 GIANT HOGWEED (Heracleum mantegazzianum) FACT SHEET Habitat: Giant Hogweed is a herbaceous non-native plant originating in Asia. If a person gets the sap on their skin and their skin is exposed to sunlight it can cause chemical burns. Home and Garden Information Center. PPQ. Seeds generally fall at the base of the parent plant but survive transport by water and this is the main means of seed dispersal. Do not purchase and grow Giant hogweed plants or seeds. 0000002444 00000 n Fact Sheets & Plant Guides: Introduced, Invasive, and Noxious Plants : Threatened & Endangered: Wetland Indicator Status ... giant hogweed, giant cow parsnip. startxref Wisconsin Department of Natural Resources. 0000006488 00000 n Announcing New Invasive Plant Fact Sheets Series. It develops a thick hollow stem that can grow up to 15-20’ (4.3-5.8m) tall with purple splotches and stiff bristles. USDA. Giant Hogweed. Invasive Species Alert Sheet Giant Hogweed. University of Connecticut. 0000012678 00000 n The section below contains highly relevant resources for this species, organized by source. Giant hogweed, or Heracleum mantegazzianum is considered a noxious weed by the federal government. Toxic sap is found in the leaves, stems, flowers, and roots of giant hogweed. 0000121240 00000 n Giant hogweed (Heracleum mantegazzianum) is a member of the carrot or parsley family, Apiaceae (Umbelliferae). The large flat cluster, umbel, of small white flowers is reminiscent of Queen Anne’s Lace, but giant hogweed’s umbel is much larger, growing up to 2½â€™ in diameter. 0000161908 00000 n National Genetic Resources Program. Seeds are dispersed by wind or by water. phytophotodermatitis). Connecticut Invasive Plant Working Group. 343 0 obj <> endobj Federal government websites always use a .gov or .mil domain. It is 2-4” (4.8-9.6 cm) in diameter. Giant hogweed is actually the common name of four species of large hogweeds that are invasive outside of their native range. Except ... rent as of the date of the fact sheet. The main difference is the height and the fact that it can cause serious burns to the skin. 0000007013 00000 n Michigan Department of Agriculture and Rural Development. A total of 14 new invasive plant fact sheets are now available. Habitat Morphology Giant hogweed occurs in the following Canadian provinces: Product names and formula-tions may vary from year to year. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. National Invasive Species Information Center, Virginia Tech Scientists who Identified Dangerous Giant Hogweed in Clarke County Hopeful That it will be Contained (Jun 18, 2018), Early Detection & Distribution Mapping System (EDDMapS) - Giant Hogweed, Pest Tracker - Survey Status of Giant Hogweed, YouTube - Giant Hogweed: A Herculean Weed with Power, Factsheet - Giant Hogweed (Mar 2017) (PDF | 758 KB), Fact Sheet: Giant Hogweed (Jan 2014) (PDF | 804 KB), Alaska Exotic Plants Information Clearinghouse (AKEPIC): Species Biography - Giant Hogweed (Feb 7, 2011) (PDF | 235 KB), NOBANIS: Invasive Alien Species Fact Sheet -. trailer 0000112979 00000 n 0000011460 00000 n This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. 0000240033 00000 n (RU�}b�|{Q!�d�-����%�|,>ȝ.Ѩx99��*�TK$P�k�U��I����{uy��L��u�BJ�&.`�KXZZZGG���8����P�. It prefers moist, disturbed soil and Heracleum mantegazzianumis the most common invasive large hogweed (growing up to 5.5 m) found in both Europe and North America. Virginia Cooperative Extension. It invades old fields and native habitats such as open woodlands. The leaves are extremely large growing to … 0000013344 00000 n Anyone who suspects they have found Giant Hogweed should take photos, check online to compare the plant to giant hogweed photos, and then contact a Virginia Cooperative Extension agent. 343 59 Giant Hogweed Information Sheet (PDF) Giant hogweed (Heracleum mantegazzianum) is a VERY LARGE, invasive plant that can cause painful burns and permanent scarring. Maps can be downloaded and shared. This is very similar-looking to giant hogweed but is much smaller. ARS. It is a garden ornamental from southwest Asia that is naturalizing in North America and becoming more common in southern and central Ontario. Center for Plant Health Science and Technology; California Department of Food and Agriculture. [Accessed Mar 19, 2015]. 0000005660 00000 n Giant hogweed resembles some of our native species such as Angelica, Queen Anne’s Lace, and Cow parsnip. Purdue University Extension. 0000007918 00000 n 0000010974 00000 n 0000162259 00000 n 401 0 obj <>stream 0000003768 00000 n Unlike native species, Hogweed can grow up to 5 metres tall and has an herbaceous stem 5 to 10 centimetres in diameter. giant hogweed. This plant only reaches a maximum height of 2 metres (6ft 7) and the symmetrical flower heads only reach 20cm across. APHIS. Plant Industry. Revised January 2019 Habitat and biology • Perennial plant from carrot or parsley (Apiaceae) family • Mature plants flower in May, producing up to 100,000 seeds that are viable in soil to 15 years • Reproduces by seeds, possibly vegetative Virginia Tech researchers who helped identify the dangerous Giant Hogweed plants in Clarke County, Virginia, want residents to stay on the lookout for the plant with toxic sap that can cause severe burns — but also stressed that the weeds are believed to have been planted intentionally decades ago and haven’t spread in the years since. European Network on Invasive Alien Species. 0000013992 00000 n Giant hogweed has the potential to spread readily and grows along roadsides, ditches and streams. New York Department of Environmental Conservation. 0000004633 00000 n Noxious weed seed and plant quarantine U.S. Weed Information; Heracleum mantegazzianum . It is known to grow in freshwater wetlands, grasslands, dis-turbed areas, urban areas, and gardens. European and Mediterranean Plant Protection Organization. The stem and leaf stalks are … Giant Hogweed (Heracleum mantegazzianum) is a perennial plant and a member of the carrot family. Reproduction and spread: Giant hogweed plants reproduce via seed. Plant Pest Risk Assessment for Giant Hogweed, Invasive Plants in Pennsylvania: Giant Hogweed (PDF | 180 KB), King County (Washington) Noxious Weed Control Program - Giant Hogweed. 0000000016 00000 n 0000002617 00000 n Giant hogweed can grow up to 15 feet tall and produce large clusters of white flowers. Virginia Tech researchers who helped identify the dangerous Giant Hogweed plants in Clarke County, Virginia, want residents to stay on the lookout for the plant with toxic sap that can cause severe burns — but also stressed that the weeds are believed to have been planted intentionally decades ago and haven’t spread in the years since. 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