Massachusetts
Introduced Pests Outreach Project
Mile-A-Minute Weed and Giant Hogweed Update (April 2007)

Mile-A-Minute Weed and Giant Hogweed Update (April 2007)

Mile-a-minute weed
In 2006 mile-a-minute weed (Polygonum perfoliatum) was detected for the first time in Massachusetts in 2 locations: Falmouth (Barnstable County) and Milton (Norfolk County). Eradication efforts will be undertaken at both sites.
Mile-a-minute weed is a vine native to eastern Asia. It is possible that this weed was transported to the US in nursery stock imported from Asia. Mile-a-minute weed is distinguished by its triangular leaves, barbed stems, and metallic-blue berries. Our mile-a-minute fact sheet is posted at http://massnrc.org/pests/pestFAQsheets/mileaminute.html and contains pictures, information on identifying this plant, and links to further information.

Giant Hogweed
In 2006 no new populations of giant hogweed (Heracleum mantegazzianum) were detected in Massachusetts. Giant hogweed has been reported and confirmed in 15 towns in 7 counties in Massachusetts. Eradication efforts have made significant progress-at almost all of the sites greater than 90% control has been achieved. Follow up will continue at known giant hogweed sites to ensure the population won’t reestablish from seeds remaining in the soil. A list of towns with giant hogweed and the status of control efforts can be found on the MDAR giant hogweed website. http://www.mass.gov/agr/pestalert/giant_hogweed.htm

Giant hogweed is native to the Caucasus mountain region of Eurasia. This plant has been moved around the world as a garden curiosity. The plant can reach 10-15 feet in height with white flower heads up to 2 ½ feet in diameter. Giant hogweed is of concern because it is an invasive that out-competes native plants and its sap can cause severe burns. Our giant hogweed fact sheet is posted at http://massnrc.org/pests/pestFAQsheets/hogweed.html and contains pictures, information on identifying this plant, and links to further information.

If you suspect you have found Giant Hogweed or Mile-A-Minute Weed, please report it via the plant pest hotline (617.626.1779) or on our website (http://massnrc.org/pests/report.aspx).

The pest alert is from the Massachusetts Introduced Pests Outreach Project, a collaborative project between the Massachusetts Department of Agricultural Resources and the UMass Extension Agriculture and Landscape Program aimed at preventing the establishment of new pathogens and pests in Massachusetts. Visit the project website (http://www.massnrc.org/pests) for more information on other emerging pests or to subscribe and unsubscribe for pest alerts.

The pest alert is from the Massachusetts Introduced Pests Outreach Project, a collaborative project between the Massachusetts Department of Agricultural Resources and the UMass Extension Agriculture and Landscape Program aimed at preventing the establishment of new pathogens and pests in Massachusetts. Visit the project website (http://www.massnrc.org/pests) for more information on other emerging pests or to subscribe and unsubscribe for pest alerts.


Massachusetts Department of Agricultural Resources
Massachusetts Introduced Pests Outreach Project is a collaboration between the Massachusetts Dept. of Agricultural Resources and the UMass Extension Agriculture and Landscape Program. 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). It may not necessarily express APHIS' views.