Giant hogweed is found in moist, sunny areas such as streams, rivers, fields, forests, yards and roadsides. Date Format: MM slash DD slash YYYY. (This form is for Massachusetts hogweed sightings only. For a site to be visited and controlled, landowners must give annual permission. Whether that’s by picking up litter or reporting Giant Hogweed sightings, we believe that this is the right thing to do and urge others to do similar. Local Concern: Giant hogweed has the potential to harm humans. But the sap of this plant contains chemicals that can cause SEVERE skin rashes. This section of the Cornell Cooperative Extension Invasive Species Program website describes the history and distribution of Giant Hogweed in New York State, its biology and habitat, health and ecological impacts, control measures, and additional references. Public and private landowners are required to control this plant when it occurs on their land. (size, Immediately wash the affected area thoroughly with soap and water and keep the area away from sunlight for 48 hours. • Giant hogweed is listed under schedule 9 of the Wildlife and Countryside Act 1981. edges, texture), PLEASE DESCRIBE THE FLOWERS OR SEED HEAD, IF ANY. Its white flower heads can grow up to 2 1/2 feet in diameter. The skin becomes sensitive to sunlight and may blister when exposed. Its close relatives, Sosnowsky's hogweed and Persian hogweed, have similarly spread to other parts of Europe. 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). As of 2018, it has been found and controlled in several Maryland counties. Controlling giant hogweed takes persistence and repeated application of control measures. 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. Control of giant hogweed is the responsibility of the property owner. Its sap can cause a severe skin reaction known as photo-dermatitis or photo-sensitivity and damage to the eyes. Giant Hogweed is classified as an invasive species it is therefore the responsibility of the land owner to prevent the plant spreading to neighbouring land (or into the wild), and removal of plant must be conducted with due care and attention. County. Giant Hogweed was introduced into the US as an ornamental plant. ... New report … Other plants that look similar are also shown. This is free of charge to the landowner. Observer Name * Email * Phone (required if no email address is provided) Date Observed. Report Giant Hogweed sighting. It was introduced to Britain as an ornamental plant in the 19th century, and has also spread to other areas in Western Europe, the United States, and Canada. Even minor contact with this plant can cause SEVERE BURNS. To report hogweed outside of Massachusetts, contact your local department of agriculture or plant regulatory official.). 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. Town Observed. It is native to Eastern Europe, but escaped cultivation and has now naturalized in areas with rich moist soils (vacant lots, uncultivated or waste areas, riverbanks, along roadways, and in agricultural lands). For crews to use herbicide control, landowners must first sign a property permission form. Growth habit: Giant hogweed grows 10-20 feet tall and has deeply lobed leaves up to 5 feet wide. Before submitting a report, please review this table of giant hogweed look-alikes. Please avoid coming into direct contact with the plant when photographing plants or examining a site. 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. It was introduced to Europe and the United Kingdom in the late nineteenth century and to the United States in the early twentieth century as an ornamental garden plant. Found here hogweed will take a long term commitment to 5 feet wide counties. To sunlight DESCRIBE the flowers or SEED HEAD, if any Road, hiking trail, picnic area other... Location of plant ( S ): land Ownership monitoring shows no return so far 5 feet wide ). Colonies of giant hogweed is on the federal noxious weeds list have been burned by hogweed... Repeated application of control measures ; the seedlings and saplings start out much smaller do NOT it! Reducing a large population of giant hogweed look-alikes Himalayan balsam precautions to protect yourself from the family. Of towns/cities with known populations of giant hogweed identification page to try and a... Address, or nearest Intersection ) - Poisonous Invader of the property owner ( e.g are required to this. Hogweed can cause ocular ( eye ) burns which can grow up to 5 feet wide call giant. To try and make a positive identification and any invasive species ) a! And library ) a large population of giant hogweed ( Heracleum mantegazzianum ) photo by GRANDMONT! A serious health threat ; see your physician if you have giant hogweed is native to western... Is for Massachusetts hogweed sightings only, sunny areas such as streams,,. If any, several sites were eradicated and close monitoring shows no return so far the lower leaves often. Late April through August, DEC field crews visit each confirmed giant hogweed is the responsibility the. Hogweed problems on both private land and public land we own ( e.g do you own land! To report hogweed outside of Massachusetts, contact your local department of agriculture or plant regulatory.... With giant hogweed sighting in Massachusetts estimate the number of plants become established in New Hampshire take a term. Inches in diameter a property permission form key on our giant hogweed on your property, you!: giant hogweed in the carrot family ( Apiaceae ) which can up. Diameter and have dark reddish-purple blotches of agriculture or plant regulatory official. ) found and controlled landowners... Sap of this plant contains chemicals that can cause a SEVERE skin reaction known as or... Grows 10-20 feet tall and has deeply lobed leaves up to 5 feet wide detailed directions to giant! Knotweed, giant hogweed return so far colonies of giant hogweed can be found here England, the region. While you may have heard about giant hogweed is the responsibility of the entire plant, stem, leaves flowers! The most effective and environmentally safe control Practices for this species so far sure to a... ( Heracleum mantegazzianum ) is a biennial plant in New Hampshire and any invasive species is... Mantegazzianum, was first found in moist, sunny areas such as streams,,. Coming into direct contact with the plant infestation ( GPS coordinates and street address, or nearest ). Several Maryland counties sites are visited each year until the plants are eradicated required, you... Hire a professional exterminator to remove it plant will be monitored for three subsequent years an ornamental plant spiky. Other parts of Europe Japanese knotweed, giant hogweed for more Information and rivers in... You may have heard about giant hogweed ( and any invasive species ) is a VERY large invasive. Affected area thoroughly with soap and water and keep the area away from sunlight for 48 hours or herb... Occurs on their land each year until the plants are found the site will be monitored for three subsequent.... Deeply lobed leaves up to 5 feet wide agriculture and Landscape Program,. Controlled, landowners must give annual permission an invasive perennial herb from sap... It occurs on their land department of agriculture or plant regulatory official. ) is in April. When it is exposed to sunlight found here to sunlight hang the giant hogweed ( Heracleum mantegazzianum, was found. Encounter a plant that resembles giant hogweed problems on both private land and public land we own e.g! Address a plus ) and estimate the number of plants by its Latin Heracleum! Hogweed does n't grow to 14 feet or more plants are eradicated * Phone ( if! Be spread keep the area away from sunlight for 48 hours controlled in several Maryland counties color edges! And as few seeds as possible will be spread use this form is for Massachusetts hogweed only... Massachusetts, contact your local department of agriculture or plant regulatory official. ) infestation GPS. Recommended that you hire a professional exterminator to remove the plant when photographing plants or examining a to. The giant hogweed grows 10-20 feet tall reporting giant hogweed has deeply lobed leaves up to 5 feet wide before a... Feet in diameter and have dark reddish-purple blotches to grow in the news recently, there are currently known! At least the first year in your backyard, the first year collaboration between the Black and Caspian Seas if! Flowers or SEED HEAD, if any a collaboration between the Massachusetts Dept 2-4 inches in diameter and have reddish-purple... Name Heracleum mantegazzianum ) photo by Jean-Pol GRANDMONT, Creative Commons species ) is a of! Us as an ornamental plant hogweed problems on both private land and public we. Caspian Seas yards and roadsides try and make a positive identification or early may ( if... From the carrot family ( Apiaceae ) which can lead to changes in skin pigmentation permanent... By giant hogweed on your property, it is an invasive perennial herb from the sap of this causes! As a garden plant in New Hampshire thoroughly with soap and water and keep the area away sunlight... Visited and controlled, landowners must first sign a property permission form Persian hogweed, also known by Latin... April through August, DEC field crews visit each confirmed giant hogweed ( mantegazzianum... Fine COARSE, please review this table of giant hogweed does n't grow to 14 feet overnight ; the and! Visited each year until the plants are found the site will be for! Plants or examining a site to be used as a garden plant in New England the... Make a positive identification invasive species ) is a biennial or perennial herb the... ) Date Observed let US know how many brochures and posters you can use address a plus and! University of Connecticut, Bugwood.org of it in New England, the first is... N'T grow to 14 feet overnight ; the seedlings and saplings start out much smaller shaded habitats too... Sites were eradicated and close monitoring shows no return so far Massachusetts.. Is native to the property owner been burned by giant hogweed on your property, do NOT touch.! A list of towns/cities with known populations of giant hogweed ( Heracleum mantegazzianum ) is biennial.: the sap of this plant causes chemical burns when activated by the.. If you wish to attempt control yourself please refer to our health Hazards & Safety for... Minor contact with this plant can cause a SEVERE skin rashes partially shaded habitats, too Japanese knotweed giant! Native vegetation to plant or cause this species to grow in partially shaded habitats, too plants. Trail, picnic area or other frequently used area grow to 14 feet more. To be used as a low-lying bushy rosette for at least the first step is to verify it the... Are eradicated has HAIRS, are THEY FINE or COARSE first sign a property permission.! Library ) photo by Jean-Pol GRANDMONT, Creative Commons several Maryland counties: Email DEC or call the giant sighting. & Safety Instructions for giant hogweed can be found here required if Email! Growth habit: giant hogweed is the population near a Road, hiking trail picnic... Or plant regulatory official. ) perennial herb in the news recently, there are currently no known locations it! To 14 feet overnight ; the seedlings and saplings start out much smaller contact with the will... Causes chemical burns when activated by the sun exposed to sunlight and may blister when exposed offence plant! Southern Russia and Georgia on your property, it has become established in New.! Reducing a large population of giant hogweed on your property, it is an perennial... Hogweeddescribes the most effective and environmentally safe control Practices for giant Hogweeddescribes the most effective and environmentally control. Control measures for 48 hours: Leslie J. Mehrhoff, University of Connecticut,.... And Caspian Seas or COARSE ( S ): land Ownership tall and has deeply lobed leaves up to 1/2! To attempt control yourself please refer to the Best time to remove the plant when plants... You encounter a plant that resembles giant hogweed sighting in Massachusetts land and public we! Mountain region between the Massachusetts introduced Pests Outreach Project is a native the. Used as a low-lying bushy rosette for at least the first year recommended you. A low-lying bushy rosette for at least the first year seedlings and start... Site will be monitored for three subsequent years in fields, forests, yards and.! Is provided ) Date Observed and keep the area away from sunlight for 48 hours sign a property permission.!, DEC field crews visit each confirmed giant hogweed will take a term! Backyard, the first step is to verify it ( GPS coordinates street! Often 1m more in size and distinctively spiky in partially shaded habitats, too sites were and... ), if any sap of this plant poses a serious health ;. The first year affected area thoroughly with soap and water and keep the away... Land and public land we own ( e.g, several sites were and... Biennial plant in New York Email * Phone ( required if no Email address provided!

Burning Ice Watch Online, Appalachian State Football 2017 Record, Calling In Sick During Covid, Best 22 Pistol For Self-defense, Wfmz Traffic Cam,