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By 1950, giant hogweed had appeared in southern Ontario, and within a quarter-century the plant was firmly established in Ontario. It was first collected from Nova Scotia in 1980 and Quebec in 1990. Giant hogweed was still available for sale in Canadian nurseries as late as 2005.
Heracleum sphondylium, commonly known as hogweed or common hogweed, is a herbaceous perennial plant in the carrot family Apiaceae, which includes fennel, cow parsley, ground elder and giant hogweed. It is native to most of Europe, western Asia and northern Africa, but is introduced in North America and elsewhere.
Sixteen Mile Creek is a river in Halton Region in the Greater Toronto Area of Ontario, Canada. [1] It is in the Great Lakes Basin, and flows from the Niagara Escarpment through the towns of Milton and Oakville to Lake Ontario. [2] The creek is named for the distance from the river's mouth to the western end of Lake Ontario. [3]
Giant hogweed sap can make skin extremely sensitive to the sun, causing third-degree burns in a short period of time. This can blind people if it gets in an eye. If you encounter the plant, don't ...
Heracleum maximum is commonly confused with Heracleum mantegazzianum (giant hogweed), [11] a much larger plant that typically has purplish spots on the stems, as well as more sharply serrated leaves. [12] Other tall invasive Heracleum species include H. mantegazzianum, H. sosnowskyi, and H. persicum.
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Heracleum mantegazzianum, giant hogweed, native to the western Caucasus region of Eurasia, a serious invasive species in many areas of Europe and North America; Heracleum sosnowskyi, Sosnowsky's hogweed, native to the eastern Caucasus, a common weed throughout Europe and Asia; Heracleum persicum, Persian hogweed, native to Iran, Iraq, and Turkey