Native to central Asia, giant hogweed is on USDA’s top 10 noxious weed list and is an environmental and public health hazard. Giant hogweed prefers rich and damp soil, and is often found in ditches, stream banks, and moist waste areas. The seeds are often spread by wind currents and surface water run-off.

Property owners may want to control this weed on their lands and report sightings of giant hogweed to the New York State Department of Agriculture and Markets at 1.800.554.4501 Ext 72087.

Safety
Exposure to the clear, watery sap of the giant hogweed causes a skin reaction known as photo-dermatitis or photo-sensitivity in both people and animals. When photo-dermatitis occurs in people, their skin becomes sensitive to ultraviolet light in sunlight. This sensitivity can lead to itching, redness, swelling, and large, painful blisters that can last for several months. Contact with the eyes can lead to temporary or, in some cases, permanent blindness.

Victims have been exposed while cutting the plant with a string trimmer, rotary mower, or other type of hand tool. When cutting or chopping the flesh of the plant, the sap is often sprayed on to the skin. When working near this plant, always wear long sleeve shirts, pants, gloves, and eye protection.

If you come into contact with the sap, immediately wash the affected skin area with soap and water and avoid exposing the area to sunlight. Wash all contaminated clothing and equipment. Skin irritation usually takes several days to develop after exposure. If symptoms develop consult a physician immediately.