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1. 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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     One giant hogweed plant can produce 20,000 seeds, allowing...

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3. 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...

   See full list on ohioline.osu.edu

   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

4. Videos

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     Giant Hogweed - A public safety video

     22 Jun 2018

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     What is giant hogweed and should we be worried?

     12 Jul 2018

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     Giant Hogweed Removal

     30 Aug 2018

     7.8K views

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5. 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: Shatter cane (Sorghum bicolor) Russian thistle (Salsola Kali var. tenuifolia). Johnsongrass (Sorghum halepense ).

6. ohiostate.pressbooks.pub › giant-hogweed-sectionGiant hogweed – Identifying Noxious Weeds of Ohio

   ohiostate.pressbooks.pub › giant-hogweed-section

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   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.

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7. u.osu.edu › knoxcountyag › 2018/03/14Ohio Noxious Weed Identification – Week 6 Giant Hogweed

   u.osu.edu › knoxcountyag › 2018/03/14

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   Mar 14, 2018 · 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. Leaves: Are lobed, deeply incised and up to 5 ft. across.

   • Location: Mount Vernon, Ohio 43050

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8. www.goodhousekeeping.com › a21598753 › giant-hogweedHow to Identify Giant Hogweed, the Plant That Can Cause ...

   www.goodhousekeeping.com › a21598753 › giant-hogweed

   Jul 16, 2018 · Getty Images. What's 14 feet tall, green, hairy, and covered in toxic sap? It may sound like a monster, but this scary beast is actually giant hogweed, a towering, invasive plant whose...

9. People also ask

   Where is giant hogweed found in Ohio?

   • Ohio’s population of giant hogweed is primarily found in Northeast Ohio especially the counties bordering Pennsylvania. 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.

   Giant Hogweed (Heracleum mantegazzianum) | Ohioline

   ohioline.osu.edu/factsheet/anr-35

   See all results for this question

   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/

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   How many seeds does a giant hogweed plant produce?

   • One giant hogweed plant can produce 20,000 seeds, allowing it to spread quickly when not managed. This plant, once found exclusively in ornamental gardens, has escaped and has become established in rich, moist soils along roadside ditches, stream banks, vacant farmland, and fence and tree lines.

   Giant Hogweed (Heracleum mantegazzianum) | Ohioline

   ohioline.osu.edu/factsheet/anr-35

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   Is giant hogweed illegal in Ohio?

   • David Marrison, Professor, Agriculture and Natural Resources; College of Food, Agricultural, and Environmental Sciences; Ohio State University Extension Giant hogweed (Heracleum mantegazzianum) is on the federal and Ohio noxious weed lists making it unlawful to propagate, sell or transport.

   Giant Hogweed (Heracleum mantegazzianum) | Ohioline

   ohioline.osu.edu/factsheet/anr-35

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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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   Is giant hogweed invasive?

   • Giant hogweed is an enormous invasive plant whose sap can cause painful burns and scarring. It's found in New England, the Mid-Atlantic, and Northwest regions of the country.

   How to Identify Giant Hogweed, the Plant That Can Cause Severe Burns

   www.goodhousekeeping.com/home/gardening/a21598753/giant-hogweed/

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10. www.woodlandtrust.org.uk › 06 › giant-hogweed-factsGiant Hogweed: The Facts - Woodland Trust

    www.woodlandtrust.org.uk › 06 › giant-hogweed-facts

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    Jun 29, 2022 · Common names: giant hogweed, giant cow parsnip, cartwheel plant, the Hog. Scientific name: Heracleum mantegazzianum. Family: Apiaceae. Habitat: derelict gardens, neglected urban places and waste ground, on rubbish tips, roadsides and by streams and rivers. Flowering season: June and July.