Giant hogweed (Heracleum mantegazzianum) also known as giant cow parsley, hogsbane, or cartwheel-flower, is a plant in the carrot family. People who touch its sap may develop giant hogweed burns ...

‘Increasing amounts’ of giant hogweed are appearing across Lymm ... It is described as looking like an ‘enormous cow parsley plant. When it is fully grown, it can reach towering heights ...