The UMaine Spruce Budworm Lab opened its doors in 2021 with support from the CFRU to monitor spruce budworm (SBW) populations. Sampling done by the UMaine SBW Lab during fall and winter is essential to identifying spruce budworm larvae (L2s) during their hibernation period before they emerge and begin feeding on foliage in the spring. Read more below about the expanding spruce budworm population in Maine as of November 2024 based on the most recent results from the UMaine Spruce Budworm Lab. *Data are available from much of northern Aroostook County and indicate a general increase in population size and extent. The UMaine Spruce Budworm L2 Map is updated weekly with new data and is subject to change based on sampling results.
Maine SBW Task Force