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Giant Hogweed - Overview

Giant Hogweed, Heracleum mantegazzianum, is native to central and southwest Asia. It was introduced to the U.S. as a garden plant. The earliest U.S. record, 1917, is from Highland Park, New York. Giant Hogweed is well established in New York and Pennsylvania and continues to spread; it was a new plant for the state of Connecticut in 2001.

Giant Hogweed is mostly present in open fields and along roadsides; however, recently it has been observed along riparian corridors in natural areas.

The sap of Giant Hogweed causes the skin to be sensitive to UV light. Individual reactions to the sap vary. For this reason, removal or treatment of the plants should be done with extreme care.

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