Browntail Moth

Browntail moth caterpillar

Update: 10/2/2018: The Towns of Falmouth and Freeport, in conjunction with the Maine Forest Service, are sponsoring two public informational sessions on Browntail Moth Caterpillars. Residents of communities affected by Browntail Moths are welcome to attend either session.

The Falmouth session will be held on Wednesday, October 17, 2018 at 6:00 pm at the Falmouth Elementary School cafeteria at 58 Woodville Road. Presenters include Allison Kanoti from the Maine Forest Service, Marty Folsom, Senior Consulting Arborist from Lucas Tree, and Falmouth Town Manager Nathan Poore.

Topics to be discussed include: identifcation of Browntail Moth Caterpillars and their overwintering webs; precautions residents should take; and the pros and cons of various treatment options, including chemical applications. A question and answer period will also be offered. 

For more information please contact Melissa Tryon at or 699-5335. 

Update 8/3/2018: Last week, officials from several communities including Falmouth met to discuss the growing browntail moth infestation and a possible regional approach to combating it. Over the next few months, the towns will be working together to consider what options might be available, realistic, and effective for our communities.

Officials are also planning to host regional public forums this fall to inform members of the public of their progress and receive feedback. More information on these forums will be posted as soon as they are scheduled. 

This past spring, the Town conducted a spraying program of street trees in the public right of way to combat the infestation of Browntail moths. The Town's spraying program was completed on Friday, May 25, 2018. The Town’s contractor, Whitney Tree Service, sprayed a chemical called Conserve SC from the roadway with a truck mounted mistblower to treat infested trees on the public roads marked in yellow on the map linked in the list below. Only those trees located in the public right of way that had nests were sprayed as part of this project. Property owners with nests on other parts of their property need to hire a qualified contractor.

For more information, contact Melissa at Town Hall at or 699-5335.

Resources for more information

Falmouth Spraying Project Frequently Asked Questions

Treatment Map

Browntail Moth Assessment and list of roads to be treated

Safety Data Sheet - Conserve SC   

Refusal form - Due to Town Hall no later than April 26

How to identify Winter Nests

Maine CDC Browntail Moth Fact Sheet

Maine DACF Browntail Moth brochure

Websites for more information on Browntail Moths: 

Maine Forest Service:

State of Maine "Got Pests" site:

Maine CDC: