: an insect that bores in the woody parts of plants
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Mealy bugs, aphids, spider mites, borers, and others can infect your indoor apple tree, which can cause leaf damage and root rot.—Sj McShane, Martha Stewart, 10 Jan. 2026 Cut branches with hollow tips past stem borer damage.—Benjamin Whitacre, Better Homes & Gardens, 24 Dec. 2025 Hire a certified arborist to remove weak or dead branches, check for borer infestations, structural integrity and so on.—Nan Sterman, San Diego Union-Tribune, 6 Dec. 2025 Emerald ash borer was first discovered in Minnesota in 2009.—Cole Premo, CBS News, 3 Dec. 2025 See All Example Sentences for borer