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Content varies depending on plant READ MORE: Giant hogweed is spreading across Ontario The non-native plant grows up to six metres in height and has large clusters of white flowers … Rural in general may be carcinogenic and teratogenic. A member of the carrot and parsley family of plants (Apiaceae), giant hogweed is native to the Caucasus region of Eurasia. As a result, parts of the site may not function properly for you. Giant Hogweed Cow Parsnip 3 to 5 metres tall stem is 3 to 10 centimetres in diameter stem has many purple spots and stiff bristles leaf can be up to 1 to 1.5 metres wide umbel-shaped (rounded white flower clusters in Oxford: Weed inspector at 519-539-9800, ext. We recommend updating your browser to its most recent version at your earliest convenience. This weed can grow up to 4 meters tall, with leaves 1 meter in length. Giant hogweed can be confused with several native and non-native plant species found in Ontario including wild parsnip ( Pastinaca sativa ), cow parsnip ( Heracleum maximum ), purplestem angelica ( Angelica atropurpurea ), woodland angelica ( Angelica sylvestris ), valerian ( Valerian officinalis ), lovage But gardening experts … "Giant Hogweed". on a GRCA property, such as a park, conservation area or other signed and marked property, contact the GRCA's Operations Division at (519) 621-2761. on your own property, private land, a municipal park or other areas such as along a riverbank or stream, contact your local municipal weed inspector. Contact with a plant, followed by exposure to the sun, can cause severe burning and blistering. What you need to know about giant hogweed. If you do come into contact with this plant immediately wash the affected area thoroughly with soap and water and keep the area away from sunlight for 48 hours. Giant hogweed has small white flowers that cluster in shapes similar to umbrellas. Its watery, clear sap contains photosensitizing compounds (furanocoumarins), which, when in contact with human skin and in combination with UV radiation, can cause burning http://imgur.com/a/JglRD. Depending on individual Giant hogweed can be a serious health hazard for humans. 学名 Heracleum mantegazzianum 和名 バイカルハナウド 英名 Giant Hogweed, Cartwheel-Flower, Giant Cow Parsnip, Hogsbane, Giant Cow Parsley ジャイアント・ホグウィード(英語: Giant Hogweed [1] [2] [3] 、学名: Heracleum mantegazzianum )は、セリ科の多年生植物。。 The city encourages people to report suspected giant hogweed and tells people how to distinguish it from other plants, such as Queen Anne’s Lace and cow parsnip, which can look similar. The plant is named after the mythological god Hercules (he of robust size and strength). Food However, its … Canadian Poison Plant – Listed http://www.cbif.gc.ca/pls/pp/ppack.info?p_psn=195&p_type=all&p_sci=comm&p_x=px, Accessing this message means you do not have a JavaScript enabled browser. Source: Nielsen, C., Ravn, HP, Nentwig, W., Wade, M. (2005) Apfelbaum advises people to dispose of giant hogweed in one of four ways. Giant hogweed has been found on several GRCA properties near Belwood Lake, St. Jacobs, Kitchener, Guelph and Cambridge. Height: Giant hogweed can grow up to 5.5 m (18 ft) in ideal conditions, however, such sizes are rare. Giant Hogweed is an Asian plant that was brought to North America about a century ago and is now spreading throughout southern Ontario. Leaves: Leaves are notably spiked with a jagged appearance. WARNING: Do not touch Giant Hogweed, its sap, in combination with moisture and sunlight, can cause severe skin and eye irritation, painful blistering, permanent scarring and blindness. If sap gets into your eyes, it can lead to blindness. 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