Canadian publication of the report on areas infested by the spruce budworm in 2026
The Ministry of Natural Resources and Forests has published the results of the aerial inventory of... Read More ›
Budworm Basics
The eastern spruce budworm is believed to be the most damaging forest insect in Maine and North America. Outbreaks of the insect that kills balsam fir and spruce trees occur every 30 to 60 years. Severe defoliation already has occurred in southern Quebec; we expect to see outbreak populations of SBW in Maine beginning within the next 3 years. Learn More ›
Who We Are
The SBW Task Force is a joint effort of the Maine Forest Service, Maine Forest Products Council, and University of Maine's Cooperative Forestry Research Unit along with leading experts on the SBW. This website is supported by the Munsungan Endowment in the Center for Research on Sustainable Forests. About Us ›
FAQs
- I think I have spruce budworms in my trees or damage from SBW–who do I contact? Read answer ›
- When the best time of year and best time of day is to spray black spruce to protect them from the spruce budworm? Read answer ›
- How can I tell if I have a spruce budworm infestation? Read answer ›