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     gd.eppo.int

     • Giant hogweed (Heracleum mantegazzianum) is on the federal and Ohio noxious weed lists making it unlawful to propagate, sell or transport.
     ohioline.osu.edu/factsheet/anr-35

     Giant Hogweed (Heracleum mantegazzianum) | Ohioline

2. People also ask

   Is giant hogweed a noxious weed in Ohio?

   • In a chapter titled “Giant Hogweed: A Hazardous Invasive Weed in Ohio,” a 2005 CFAES research bulletin (scroll to p. 49) said “the state of Ohio recently added Heracleum mantegazzianum, better known as giant hogweed, to the state noxious weed list.”

   Yes, there’s giant hogweed in Ohio (in some places): What to know and

   u.osu.edu/sustainability/2018/06/19/yes-theres-giant-hogweed-in-ohio-in-some-places-what-to-know-and-how-to-spot-it/

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   Is giant hogweed a noxious weed?

   • Giant hogweed (Heracleum mantegazzianum) is on the federal and Ohio noxious weed lists making it unlawful to propagate, sell or transport. It has been included on these lists because of its ability to crowd out native plants and because of its potential human health hazard. Figure 1.

   Giant Hogweed (Heracleum mantegazzianum) | Ohioline

   ohioline.osu.edu/factsheet/anr-35

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   What is giant hogweed?

   • Giant hogweed, the nasty invasive plant that’s currently in the news — experts discovered it for the first time in Virginia recently — has been found in scattered places in Ohio for a number of years, especially in Ashtabula County in the state’s far northeastern corner.

   Yes, there’s giant hogweed in Ohio (in some places): What to know and

   u.osu.edu/sustainability/2018/06/19/yes-theres-giant-hogweed-in-ohio-in-some-places-what-to-know-and-how-to-spot-it/

   See all results for this question

   Is there a giant hogweed in Virginia?

   • The giant hogweed, which has plagued New York for years, recently appeared in Virginia, where one agricultural expert with Virginia Tech wrangled it outside a residential home wearing a Tyvek suit and goggles. Be careful if you encounter this invasive plant!

   Giant hogweed, toxic plant with sap that causes burns

   www.today.com/health/giant-hogweed-toxic-plant-sap-causes-burns-blindness-appears-virginia-t131355

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   Is giant hogweed invasive?

   • Be careful if you encounter this invasive plant! The clear watery sap of Giant Hogweed contains toxins that can cause dermatitis (inflammation of the skin). It can cause burns if you get the sap on your skin and the skin is then exposed to sunlight. pic.twitter.com/zg2XB30gtN

   Giant hogweed, toxic plant with sap that causes burns

   www.today.com/health/giant-hogweed-toxic-plant-sap-causes-burns-blindness-appears-virginia-t131355

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   Is giant hogweed dangerous?

   • Giant hogweed plants form a dense canopy and displace many native and non-native species. Lack of detection of the rosette stage of this species has underscored the extent of the giant hogweed establishment in Pennsylvania and New York where it is widespread. Giant hogweed’s greatest danger is the effect its sap has on humans.

   Giant Hogweed (Heracleum mantegazzianum) | Ohioline

   ohioline.osu.edu/factsheet/anr-35

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3. u.osu.edu › sustainability › 2018/06/19Yes, there’s giant hogweed in Ohio (in some places): What to ...

   u.osu.edu › sustainability › 2018/06/19

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   Jun 19, 2018 · Giant hogweed, the nasty invasive plant that’s currently in the news — experts discovered it for the first time in Virginia recently — has been found in scattered places in Ohio for a number of years, especially in Ashtabula County in the state’s far northeastern corner.

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4. ohioline.osu.edu › factsheet › anr-35Giant Hogweed (Heracleum mantegazzianum) | Ohioline

   ohioline.osu.edu › factsheet › anr-35

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   • Identification
   • Control of Giant Hogweed
   • Acknowledgements
   • References
   • Photo Credits

   Giant hogweed is an herbaceous dicotyledonous plant that is classified as having a biennial life cycle. It is a member of the Apiaceae (Umbelliferae)family of plants, commonly known as the Carrot or Parsley family. It can live for several years but once it flowers and bears fruit it dies. Giant hogweed is hardy to zone 3 and prefers full sun and mo...

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   Gardeners, landscapers, surveyors, nurserymen and farmers should exercise caution around this plant. As was mentioned previously, the plant juices can cause phytophotodermatitis. If the plant sap comes in contact with the skin in the presence of sunlight, a severe rash and/or blistering can occur. Therefore, extreme caution should be taken when con...

   See full list on ohioline.osu.edu

   The authors would like to thank Dr. Jörg Ochsmann, Dr. Mads A. Sorensen, and the USDA-APHIS office for their photo contributions. A special thank you is extended to Settillo Codispoti for allowing OSU Extension educators to learn more about giant hogweed at his farm in Pierpont, Ohio. Reviewers of this document included: Jeff Stachler, Weed Scienti...

   See full list on ohioline.osu.edu

   Neilson, C., Ravn, P., Nentwig, W., & Wade, M. (2005). The Giant Hogweed Best Practice Manual. Horsholm, Denmark: Forest & Landscape Denmark. (Online). Retrieved August 2005. researchgate.net/publi...

   United States Department of Agriculture, Animal & Plant Health Inspection Service (2002). Giant Hogweed.(Online). Retrieved August 2005. aphis.usda.gov/lpa/pubs/fsheet_faq_notice/fs_phhgweed.pdf (n...

   Mayer, L. (n.d.). Comparison of Management Techniques for Heracleum mantegazzianum in North and Central Europe.(Online). Retrieved August 2005. horticulture.coafes.umn.edu/vd/h5015/00papers/mayer.h...

   King County Washington (2004). Best Management Practices for Giant Hogweed.(Online). Retrieved August 2005. dnr.metrokc.gov/wlr/LANDS/Weeds/pdf/hogweed-control.pdf (no longer available online).

   See full list on ohioline.osu.edu

   Figures 1, 4, 5, 6, 7, 8 and 9. Photos courtesy of David Marrison, OSU Extension.

   Figure 2. Photo courtesy of the USDA-APHIS.

   Figure 3. Photo reprinted with permission from Dr. Jörg Ochsmann, Germany.

   Figure 10. Photo reprinted with permission from Mads A. Sorensen, Denmark.

   See full list on ohioline.osu.edu

5. Videos

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6. ohiostate.pressbooks.pub › ohionoxiousweedsGiant hogweed – Identifying Noxious Weeds of Ohio

   ohiostate.pressbooks.pub › ohionoxiousweeds

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   Ohio’s Noxious Weeds. Giant hogweed. Heracleum mantegazzianum, giant hogweed. Family: Parsley, Apiaceae. Habitat: Rich, moist soils along roadside ditches, stream banks, waste ground, along tree lines and open wooded areas. Life cycle: Biennial or herbaceous plant. Growth habit: 8-15 ft tall.

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7. ocj.com › 2020 › 09The legalities of noxious weeds – Ohio Ag Net | Ohio's ...

   ocj.com › 2020 › 09

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   Sep 18, 2020 · The Ohio Department of Agriculture (ODA) is in charge of designating “prohibited noxious weeds.”. The list may change from time to time, but currently, noxious weeds include: Russian thistle (Salsola Kali var. tenuifolia). Johnsongrass (Sorghum halepense ). Wild parsnip (Pastinaca sativa).

8. www.transportation.ohio.gov › 02-noxious-weedProhibited Noxious Weeds | Ohio Department of Transportation

   www.transportation.ohio.gov › 02-noxious-weed

   Giant hogweed is not prevalent in Ohio but has been located in isolated stands in eastern Ohio and neighboring states. Giant hogweed prefers moist soil around waterways and is tolerant of shade but can also grow in full sun in dry soils around ditches.

9. www.invasive.org › species › listOhio Noxious Weeds - Invasive

   www.invasive.org › species › list

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   Ohio Noxious Weeds. Ohio laws and rules. 2019. Prohibited noxious weeds. Ohio laws and rules. ... giant hogweed: Heracleum mantegazzianum Sommier & Levier: Apiaceae ...

10. ohiostate.pressbooks.pub › ohionoxiousweeds › partOhio’s Noxious Weeds – Identifying Noxious Weeds of Ohio

    ohiostate.pressbooks.pub › ohionoxiousweeds › part

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    Ohio’s Noxious Weeds. Ohio currently has 21 noxious weeds:*. Apple of Peru………………………………….. Nicandra physalodes. Canada thistle……………………………………….. Cirsium arvense. Cressleaf groundsel………………………………. Senecio glabellus. Giant hogweed……………………..