The hogweed is packed with sap that causes phytophotodermatitis — meaning it stops the skin’s ability to protect itself from the sun’s harmful rays. In extreme cases, exposure can result in third-degree burns and even blindness. And the effects can last months, or even years. //

Giant hogweed is a biennial or perennial herb in the carrot family (Apiaceae) which can grow to 14 feet or more. Its hollow, ridged stems grow 2-4 inches in diameter and have dark reddish-purple blotches. Its large compound leaves can grow up to 5 feet wide. Its white flower heads can grow up to 2 1/2 feet in diameter.