The latest info on plant pests, pathogens, and weeds.

Emerald ash borer update: November 2020

As of November 3rd, 21 new municipalities have been confirmed to have populations of emerald ash borer. Berkshire County now has known EAB infestations in every municipality except New Marlborough and Otis, while Hampden County has EAB everywhere except Chicopee and Holland. The most recent detections occurred in:

Berkshire County

  • Adams
  • Clarksburg
  • Monterey
  • New Ashford
  • Sandisfield
  • Savoy
  • Williamstown

Franklin County

  • Colrain
  • Conway
  • Hawley
  • Leverett
  • Montague
  • Sunderland

Hampden County

  • Tolland

Hampshire County

  • Worthington

Middlesex County

  • Ashland
  • Lincoln
  • Maynard
  • Stow
  • Sudbury

Norfolk County:

  • Norfolk

This brings the total number of municipalities with EAB in the state to 161 (46%). An updated map is below (click on the map to zoom in):

If you suspect you have seen EAB in an area not indicated on the map above, get a photo of the damage if you can, and report it here. If you missed our October update, you can find that here.

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