Giant hogweed is sometimes confused with cow parsnip or poison hemlock, described here, which are two other plants that can also cause adverse reactions from contact: Giant hogweed is an invasive ...

Giant hogweed sap has even caused blindness in people who got its sap in their eyes. This is one bad weed. This woody shrub is in the sumac family and like poison ivy, poison oak produces an oil ...

It’s kind of unmistakable,” Powers said. Giant hogweed looks like a larger version of Queen-Anne’s Lace — or the equally toxic poison hemlock, she said. It is an invasive species ...