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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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- Invasive Species
Invasive Species - Yes, there’s giant hogweed in Ohio (in...
- Ashtabula
Recently, a new invasive weed pest emerged in northeast...
- Ohioline
One giant hogweed plant can produce 20,000 seeds, allowing...
- Uncategorized
The Ohio Agriculture Conservation Initiative (OCAI) “brings...
- On The Farm
On The Farm What’s ahead for Lake Erie this summer? May 26...
- At Home
At Home - Yes, there’s giant hogweed in Ohio (in some...
- On Campus
The Scarlet, Gray, and Green Fair on Saturday, April 23,...
- Bee Culture Editor to Speak Wednesday
- 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...
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...
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...
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).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.Sep 18, 2020 · One note – the image at the top of the article actually shows a ragweed (Ambrosia sp.) on the left, a wild lettuce (Lactuca sp.) in the center, and common elderberry (Sambucus canadensis) top and right with white flowers, and does not show giant hogweed (Heracleum mantegazzianum) as mentioned in the caption.
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.
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.
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.
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Heracleum mantegazzianum, commonly known as giant hogweed, [2][3][4][5] is a monocarpic perennial herbaceous plant in the carrot family Apiaceae. H. mantegazzianum is also known as cartwheel-flower, [3][4][5] giant cow parsley, [6] giant cow parsnip, [7] or hogsbane.
