Before submitting a report, please review this table of giant hogweed look-alikes. Photograph: Photos are needed to confirm identification. Local Concern: Giant hogweed has the potential to harm humans. (width, color, Since its introduction to British Columbia, it has escaped cultivation and is rapidly spreading throughout Vancouver Island, … a biennial or perennial herb in the carrot family (Apiaceae) which can grow to 14 feet or more. • Giant hogweed is listed under schedule 9 of the Wildlife and Countryside Act 1981. Although this striking plant can be attractive in certain situations, most gardeners will want to eradicate it, as it is potentially invasive and the sap can cause severe skin burns. Giant hogweed is a native of the Caucasus Mountain region between the Black and Caspian Seas. Where did it come from? In general, root-cutting is used at smaller sites with less than 400 plants, herbicide is used at larger sites with greater than 400 plants and flower/seed head removal is used at all sites to limit seed dispersal. This website was made possible, in part, by a Cooperative Agreement from the United States Department of Agriculture's Animal and Plant Health Inspection Service (APHIS). Large infestations may need to be controlled with the use of a herbicide such as glyphosate, since Giant Hogweed is a human healt… But the sap of this plant contains chemicals that can cause SEVERE skin rashes. Is the population near a road, hiking trail, picnic area or other frequently used area? It is an herbaceous biennial or monocarpic perennial that grows as a low-lying bushy rosette for at least the first year. Giant hogweed seed can remain dormant in the soil for years, It is critical to monitor infested sites often to control any new plants that appear. Please refer to our Health Hazards & Safety Instructions for Giant Hogweed for more information. Its large compound leaves can grow up to 5 feet wide. The plant will be removed safely and as few seeds as possible will be spread. Control of giant hogweed is the responsibility of the property owner. WARNING: The sap of this plant causes chemical burns when activated by the sun. Please refer to the Giant Hogweed Identification page for further help. The guide to Best Management Practices for Giant Hogweeddescribes the most effective and environmentally safe control practices for this species. Immediately wash the affected area thoroughly with soap and water and keep the area away from sunlight for 48 hours. Giant Hogweed was introduced into the US as an ornamental plant. texture), IF THE STEM HAS HAIRS, ARE THEY FINE OR COARSE? Take high resolution photos of the entire plant, stem, leaves, flowers and seeds, making sure to keep a safe distance. Giant hogweed reaches up to 8-20’ when in flower and has hollow, ridged stems covered in coarse white hairs and reddish-purple mottling. It was likely introduced to British Columbia, from Asia, as an ornamental plant. NOTE: Giant hogweed has poisonous sap! Control of Giant Hogweed (and any invasive species) is up to the property owner. Growth habit: Giant hogweed grows 10-20 feet tall and has deeply lobed leaves up to 5 feet wide. Giant hogweed grows along streams and rivers and in fields, forests, yards and roadsides. Giant hogweed is an invasive perennial herb from the carrot family (Apiaceae). Email DEC or call the Giant Hogweed Information Line at 845-256-3111 to let us know how many brochures and posters you can use. If you suspect you may have found giant hogweed you should take photos, note the location, and report the site to NYS DEC via Email, or at the Giant Hogweed Information Line: 1-845-256-3111. 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