{"id":4521,"date":"2023-05-16T05:19:17","date_gmt":"2023-05-16T05:19:17","guid":{"rendered":"https:\/\/bartlett.crunkit.com\/?p=4521"},"modified":"2025-10-27T20:46:58","modified_gmt":"2025-10-27T20:46:58","slug":"tree-borers-destructive-insect-pests","status":"publish","type":"post","link":"https:\/\/www.bartlett.com\/blog\/tree-borers-destructive-insect-pests\/","title":{"rendered":"Tree borers: Destructive insect pests"},"content":{"rendered":"<p>Tree borers and wood boring insects make their homes in the bark, trunks and branches of trees.\u00a0 Living up to their name, these larvae \u2018bore\u2019 in trees, laying eggs and feeding inside roots, trunks and branches and tunneling beneath the bark.\u00a0 As a result of their activity, trees sustain serious internal damage.\u00a0 Specifically, injuries restrict the tree&#8217;s ability to transport water and nutrients and can ultimately kill the host plant.\u00a0 Borers are some of the most destructive pests of trees and shrubs.<\/p>\n<h3>Tree Species at Risk<\/h3>\n<p>Some borers have specific host plants.\u00a0 Dogwood borer and hemlock borer are examples.\u00a0 However, others can infest a variety of tree species.\u00a0 It&#8217;s important to note that only a few borers attack healthy trees.\u00a0 Most infestations occur in trees that are already under stress.\u00a0 For instance, trees growing in poor soil conditions or those that are subject to extreme weather such as drought.\u00a0 Further, recently transplanted young plants are targets for infestation.\u00a0 Maintaining tree health is an important step in preventing infestation from tree borers.\u00a0 Be sure to fertilize based on <a href=\"https:\/\/www.bartlett.com\/blog\/analyze-before-you-fertilize-why-soil-analysis-is-critical\/\">soil analysis<\/a> and water trees properly during dry periods.<\/p>\n<h3>Signs of Tree Borer Infestation<\/h3>\n<p>In the early years of an infestation, there may be few signs as the pests bore inside the plant, creating irreversible internal injuries.\u00a0 As infestation progresses, exit holes where adults emerge may be visible in the trunk or branches.<span class=\"Apple-converted-space\">\u00a0 <\/span>The plant may lose leaves.\u00a0 In some cases, the beetles will leave a sawdust-like debris, called frass, nearby.<\/p>\n<div id='gallery-1' class='gallery galleryid-4521 gallery-columns-2 gallery-size-medium'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.bartlett.com\/blog\/tree-borers-destructive-insect-pests\/black-twig-borer\/'><img fetchpriority=\"high\" decoding=\"async\" width=\"225\" height=\"300\" src=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/black-twig-borer-225x300.jpg\" class=\"attachment-medium size-medium\" alt=\"black twig borer\" aria-describedby=\"gallery-1-6962\" srcset=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/black-twig-borer-225x300.jpg 225w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/black-twig-borer.jpg 637w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-6962'>\n\t\t\t\tBlack twig borer seen inside a small twig\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.bartlett.com\/blog\/tree-borers-destructive-insect-pests\/eab-gallery\/'><img decoding=\"async\" width=\"201\" height=\"300\" src=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/EAB-gallery-201x300.jpg\" class=\"attachment-medium size-medium\" alt=\"tree borers feeding damage\" aria-describedby=\"gallery-1-6960\" srcset=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/EAB-gallery-201x300.jpg 201w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/EAB-gallery.jpg 402w\" sizes=\"(max-width: 201px) 100vw, 201px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-6960'>\n\t\t\t\tFeeding damage from tree borers under the bark\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n\n<h3>Common Tree Borers<\/h3>\n<p>While there are hundreds of wood boring species that are not considered pests, some species pose a serious risk to trees.\u00a0 <a href=\"https:\/\/www.bartlett.com\/resources\/insects-and-pests\/bark-beetles\">Bark beetles<\/a> are one group that cause widespread damage.\u00a0 Species like Southern pine beetle are known for the destruction of evergreen trees, but some others like elm bark beetle and oak bark beetles have deciduous trees as their hosts.<\/p>\n<p>Even native species such as <a href=\"https:\/\/www.bartlett.com\/resources\/technical-reports\/bronze-birch-borer\">bronze birch borer<\/a> can be problematic, particularly for trees planted in urban and suburban environments.\u00a0 Though well-known invasive species are often the most infamous of tree borers.\u00a0 The <a href=\"https:\/\/www.bartlett.com\/resources\/insects-and-pests\/emerald-ash-borer\">emerald ash borer<\/a> is a metallic green beetle that has killed hundreds of millions of ash trees since its arrival in North America.\u00a0 It is imperative to treat an ash tree or American fringe tree if the emerald ash borer is nearby.\u00a0 Another example is <a href=\"https:\/\/www.bartlett.com\/resources\/insects-and-pests\/asian-longhorned-beetle\">Asian longhorned beetle<\/a>.\u00a0 Attacking a broad range of hosts including maple, horse chestnut, willow, birch and elm, this pest will infest and kill healthy and stressed trees alike.\u00a0 Being aware of <a href=\"https:\/\/www.invasivespeciesinfo.gov\/terrestrial\/invertebrates\">invasive species<\/a> like these is important to helping prevent further spread and damage.<\/p>\n<div id='gallery-2' class='gallery galleryid-4521 gallery-columns-2 gallery-size-full'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.bartlett.com\/blog\/tree-borers-destructive-insect-pests\/image-of-emerald-ash-borer-beetle-on-a-green-leaf-insect-anima\/'><img decoding=\"async\" width=\"2560\" height=\"1707\" src=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/emerald-ash-borer-scaled.jpg\" class=\"attachment-full size-full\" alt=\"adult emerald ash borer\" aria-describedby=\"gallery-2-6959\" srcset=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/emerald-ash-borer-scaled.jpg 2560w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/emerald-ash-borer-300x200.jpg 300w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/emerald-ash-borer-1024x683.jpg 1024w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/emerald-ash-borer-768x512.jpg 768w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/emerald-ash-borer-1536x1024.jpg 1536w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/emerald-ash-borer-2048x1365.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-6959'>\n\t\t\t\tAdult emerald ash borer\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.bartlett.com\/blog\/tree-borers-destructive-insect-pests\/70335773-anoplophora-malasiaca-3\/'><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1700\" src=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/Wood-Boring_Asian-longhorned-beetle-is-one-of-the-invasive-species-resposible-for-significant-tree-loss-scaled.jpg\" class=\"attachment-full size-full\" alt=\"adult asian longhorned beetle\" aria-describedby=\"gallery-2-6963\" srcset=\"https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/Wood-Boring_Asian-longhorned-beetle-is-one-of-the-invasive-species-resposible-for-significant-tree-loss-scaled.jpg 2560w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/Wood-Boring_Asian-longhorned-beetle-is-one-of-the-invasive-species-resposible-for-significant-tree-loss-300x199.jpg 300w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/Wood-Boring_Asian-longhorned-beetle-is-one-of-the-invasive-species-resposible-for-significant-tree-loss-1024x680.jpg 1024w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/Wood-Boring_Asian-longhorned-beetle-is-one-of-the-invasive-species-resposible-for-significant-tree-loss-768x510.jpg 768w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/Wood-Boring_Asian-longhorned-beetle-is-one-of-the-invasive-species-resposible-for-significant-tree-loss-1536x1020.jpg 1536w, https:\/\/www.bartlett.com\/blog\/wp-content\/uploads\/2019\/06\/Wood-Boring_Asian-longhorned-beetle-is-one-of-the-invasive-species-resposible-for-significant-tree-loss-2048x1360.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-6963'>\n\t\t\t\tAdult Asian longhorned beetle\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Tree borers and wood boring insects make their homes in the bark, trunks and branches of trees.\u00a0 Living up to their name, these larvae \u2018bore\u2019 in trees, laying eggs and feeding inside roots, trunks and branches and tunneling beneath the bark.\u00a0 As a result of their activity, trees sustain serious internal damage.\u00a0 Specifically, injuries restrict&hellip; <a class=\"continue\" href=\"https:\/\/www.bartlett.com\/blog\/tree-borers-destructive-insect-pests\/\">Read More<span> Tree borers: Destructive insect pests<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":6960,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[7],"tags":[],"class_list":["post-4521","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pests-and-diseases"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tree borers: Destructive insect pests - Tree Topics<\/title>\n<meta name=\"description\" content=\"Tree borers make their homes in the bark, trunks and branches of trees. 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