State environmental authorities in Wisconsin are the latest to warn of the dangers of a giant invasive plant whose toxic sap can cause temporary blindness and severe burns and blisters in people unlucky enough to come in contact with it.
But they're not the only ones worried about giant hogweed (scientific name Heracleum mantegazzianum), a plant from central Asia that misguided horticulturists imported to New York state back in 1917, possibly because of the beauty of its umbrella-shaped white flowers. Since then, it's spread across the United States from Maine to Washington state, and across Canada as well.
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