Formally known as Heracleum mantegazzianum giant hogweed is part of the Apiaceae family one which includes plants such as parsley carrot parsnip cumin and coriander. When susceptible people come in contact with the sap and the skin is exposed to sunlight painful blisters develop. Giant Hogweed In Eastern Ontario Giant Hogweed Plant Hogweed Plant Ontario 17 hours agoGiant hogweed is an invasive plant that can cause severe burns and blistering. . Characteristics of the Adult Giant Hogweed Plant. Giant hogweed is an immensely tall umbellifer member of the carrot family that displays large white umbrella-like clusters of flowers. Its hollow stem is ridged and purple-spotted and its leaves are large and divided. Giant hogweed is noteworthy because its sap causes severe skin irritation. Virginia Tech researchers who helped identify the dangerous Giant Hogweed plants in Clarke County Virginia want residents to stay on the lookout ...
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