Invasive balsam woolly adelgid detected in Roscommon County

  • 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.
    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.
    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. The Michigan departments of Agriculture and Rural Development and Natural Resources have been managing isolated balsam woolly adelgid infestations in Clare, Missaukee and Oceana counties since 2023. A small infes...

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