The trunk of a balsam fir heavily infested with balsam woolly adelgid. The insect’s egg sacs appear as small, white, cottony masses on fir trunks and branches.
Invasive balsam woolly adelgid detected in Roscommon County
News Staff
LANSINGBalsam woolly adelgid, a tiny, sap-feeding insect that attacks true fir trees, has been detected at the Backus Creek State Game Area in Roscommon County.
Wednesday, May 6, 2026