Heracleum mantegazzianum, known as giant hogweed, can grow up to 10ft (3m) tall and is generally biennial, according to the Royal Horticultural Society. Mrs Price said: "My son was playing ...

as there's also a native hogweed which can grow tall and cause an itchy rash but that is far less problematic than giant hogweed,' says Morris, who notes that this version can be left alone for ...

Giant hogweed was initially grown as an ornamental plant for gardeners due to its attractive, lacelike appearance. Typically around 10 feet tall, the plant has serrated, lobed leaves and long ...

citing a giant hogweed fact sheet produced by the NC Invasive Plant Council. The 15-foot-tall herb ”topped with fluffy white flowers” can cause blindness, the Observer reported. In sunlight, ...