21 July 2016

Is that Giant Hogweed in Your Yard?

Posted in News Releases

Is that Giant Hogweed in Your Yard?

 

According to Alberta Agriculture and Rural Development Giant Hogweed is NOT currently found anywhere in Alberta! Here are some plants that are easily mistaken for this weed that can cause severe blistering or burning on your skin.

 

 


Giant Hogweed
(Heracleum Mantegazzianum)
What it is: Prohibited Noxious, biennial or short lived perennial.
Why it’s a concern: After skin comes into contact with the sap, which contains photosensitizing compounds, it causes burning and blistering on the skin.
How to identify it: Grows over 6 meters, dark red hairy stem that are covered in coarse whisker-like hairs, compound leaves up to 1.5 meters across with sharp course teeth, umbrella-shaped white flowerhead up to 1 meter across.
Similar species: Cow Parsnip, Wild Carrot, Water Parsnip, Water Hemlock, Goutweed, Angelica, and Wild Caraway.
Where it’s found: British Columbia, Ontario, Quebec, New Brunswick, Nova Scotia and Newfoundland.
According to Alberta Agriculture and Rural Development:
Giant Hogweed is NOT currently found anywhere in Alberta!



Contact Agricultural Services in the Wildwood Office @ 1-800-814-3935 or 325-3782

 

 

Similar Species:
Most of these species can be found in Alberta, and Yellowhead County specifically. It is important to note that most of
these species are also native to Alberta and are not listed under the Alberta Weed Control Act.
Cow Parsnip is most often confused with Giant Hogweed, but it is much smaller in size (1-2 meters), the leaves are not as
sharply toothed, and the stem is not as red and hairy.

Download this Giant Hogweed Fact Sheet - shows examples of Giant Hogweed and other plants that are often confused with this species.

 

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