{"id":1045,"date":"2025-06-10T17:01:32","date_gmt":"2025-06-10T17:01:32","guid":{"rendered":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?p=1045"},"modified":"2025-08-27T19:37:47","modified_gmt":"2025-08-27T19:37:47","slug":"two-spotted-spider-mite","status":"publish","type":"post","link":"https:\/\/sites.rutgers.edu\/nursery-ipm\/two-spotted-spider-mite\/","title":{"rendered":"Two Spotted Spider Mite"},"content":{"rendered":"<h2><strong>Two Spotted Spider Mite (<em>Tetranychus urticae<\/em>)<\/strong><\/h2>\n<h4><strong>GDD Window (base 50): 363-618 (emerging overwintering females)<\/strong><\/h4>\n<h5><\/h5>\n<h4><strong>Overview:<\/strong>\u200b\u200b\u200b<\/h4>\n<ul>\n<li>Microscopic (1\/50\u201d) arachnids with oval bodies, typically yellow-orange in color,\u00a0with two dark spot on each side of the\u00a0body.\u00a0\u00a0\u200b<\/li>\n<li>Most common during hot, dry summer\u00a0weather\u00a0\u00a0\u200b<\/li>\n<li>Overwinter as orange colored adult females beneath plants\u00a0\u200b<\/li>\n<li>During warm summer months can have 10-15 generations\u00a0\/\u00a0year\u200b<\/li>\n<li>Multiple generations can produce extensive webbing over infested\u00a0plants\u00a0\u00a0\u200b<\/li>\n<li>Causes yellow or white stippling on leaves, leading to leaf drop\u200b<\/li>\n<li>Leaves begin to look bronzed, bleached, or\u00a0distorted\u200b<\/li>\n<li><span data-usefontface=\"true\" data-contrast=\"none\">Severe infestation can stunt plant growth and lead to\u00a0<\/span><span data-usefontface=\"true\" data-contrast=\"none\">death<\/span>\u200b<\/li>\n<li><b><span data-usefontface=\"true\" data-contrast=\"none\">Host plants<\/span><\/b><b><span data-usefontface=\"true\" data-contrast=\"none\">:\u00a0<\/span><\/b><span data-usefontface=\"true\" data-contrast=\"none\">\u00a0Over 200 species (cosmopolitan mite<\/span><span data-usefontface=\"true\" data-contrast=\"none\">)<\/span><\/li>\n<\/ul>\n<h4><strong>Management:<\/strong><\/h4>\n<h5><strong>Cultural Practices:<\/strong><\/h5>\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"2\" data-aria-level=\"2\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Natural predators:<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\"> lady beetles,\u00a0<\/span><b><span data-usefontface=\"false\" data-contrast=\"none\">predatory mites<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0(<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">Phytoseiulus <\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">persimilis<\/span><\/i><span data-usefontface=\"false\" data-contrast=\"none\">)<\/span>\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"3\" data-aria-level=\"2\">Increase humidity around plants to deter mites\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"4\" data-aria-level=\"2\">Reduce drought stress\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"5\" data-aria-level=\"2\">Reduce plant stress overall\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"6\" data-aria-level=\"2\">Do not overwater\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"7\" data-aria-level=\"2\">Do not fertilize during droughts\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"8\" data-aria-level=\"2\">Mulch to conserve moisture\u200b<\/li>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"9\" data-aria-level=\"2\">Syringing\u200b<span style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;font-size: 1rem\">\u200b<\/span><\/li>\n<\/ul>\n<h5><strong>Materials:<\/strong><\/h5>\n<ul>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Contact insecticides:\u00a0<\/span><\/b>\u200b\n<ul>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Pyrethroids [3]: &#8211;<\/span><span data-usefontface=\"false\" data-contrast=\"none\">thrins<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Considerations:<\/span><\/b>\u200b\n<ul>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Will impact non-target species<\/span>\u200b<\/li>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Can promote mite resurgence<\/span><\/b>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Spray in early morning or early evening<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Systemics:<\/span><\/b>\u200b\n<ul>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Abamectin [6]<\/span>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Acephate<\/span><span data-usefontface=\"false\" data-contrast=\"none\"> [1B] (translaminar)<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Reduced Risk:<\/span><\/b>\u200b\n<ul>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Acequinocyl [20B]<\/span>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Mito.\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">Compx<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0III [20D]:\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">bifenazate<\/span>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Spiromesifen [23]<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>Biorationals:<\/strong><\/h5>\n<ul>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Horticultural oil<\/span>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Insecticidal soap<\/span>\u200b<\/li>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Hexythiazox [10A]<\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0(MGR)<\/span><\/b><\/li>\n<\/ul>\n<h4><strong>Resources:<\/strong><\/h4>\n<h5><strong><a class=\"btn btn-primary\" href=\"https:\/\/plant-pest-advisory.rutgers.edu\/nursery-update-focus-on-warm-season-spider-mites\/\" target=\"_blank\" rel=\"noopener\">Nursery update; focus on warm season spider mites &#8211; PPA<\/a><\/strong><\/h5>\n<p><a class=\"btn btn-primary\" href=\"https:\/\/njaes.rutgers.edu\/pubs\/publication.php?pid=fs235\" target=\"_blank\" rel=\"noopener\">Two-Spotted Spider Mites &#8211; NJAES<\/a><\/p>\n<p><a class=\"btn btn-primary\" href=\"https:\/\/plant-pest-advisory.rutgers.edu\/cool-season-mites-have-faded-but-warm-season-mites-now-surge\/\" target=\"_blank\" rel=\"noopener\">Cool Season Mites Fade, As Warm Season Mites Surge &#8211; PPA<\/a><\/p>\n<p><a class=\"btn btn-primary\" href=\"https:\/\/plant-pest-advisory.rutgers.edu\/cool-season-mites-wax-as-the-warm-season-mites-wane\/\" target=\"_blank\" rel=\"noopener\">Cool Season Mites Wax as the Warm Season Mites Wane &#8211; PPA<\/a><\/p>\n<p><a class=\"btn btn-primary\" href=\"https:\/\/plant-pest-advisory.rutgers.edu\/landscape-pest-notes-for-late-june-2023\/\" target=\"_blank\" rel=\"noopener\">Landscape Pest Notes for Late June 2023 &#8211; PPA<\/a><\/p>\n<p><a class=\"btn btn-primary\" href=\"https:\/\/plant-pest-advisory.rutgers.edu\/weather-effects-on-plants-insect-mite-pests\/\" target=\"_blank\" rel=\"noopener\">Weather Effects on Plants &amp; Insect-Mite Pests &#8211; PPA<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h5><a class=\"CID628a2cbb-1b26-42ce-9f2c-6aa75e84d266\" data-sessionid=\"7ce834b4-81f4-c22f-0131-b2139698ba10\" data-shapeids=\"4\" data-slideid=\"\"> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-1336\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Screenshot-2025-08-07-141143-300x167.png\" alt=\"\" width=\"663\" height=\"369\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Screenshot-2025-08-07-141143-300x167.png 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Screenshot-2025-08-07-141143.png 634w\" sizes=\"(max-width: 663px) 100vw, 663px\" \/><\/a><\/h5>\n<figure id=\"attachment_1047\" aria-describedby=\"caption-attachment-1047\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1047\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/2spot-SR-credit-300x208.jpg\" alt=\"\" width=\"300\" height=\"208\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/2spot-SR-credit-300x208.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/2spot-SR-credit-768x533.jpg 768w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/2spot-SR-credit.jpg 780w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1047\" class=\"wp-caption-text\">Multiple life stages of Two spotted spider mites. Photo: Steven Rettke, RCE.<\/figcaption><\/figure>\n<figure id=\"attachment_1046\" aria-describedby=\"caption-attachment-1046\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1046\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/2spot-webbing-SR-credit-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/2spot-webbing-SR-credit-300x225.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/2spot-webbing-SR-credit.jpg 720w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1046\" class=\"wp-caption-text\">Two spotted spider mite webbing and damage. Photo: Steven Rettke, RCE.<\/figcaption><\/figure>\n<h6><\/h6>\n<h6><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">Disclaimer<\/span><\/span><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\"> &#8211; Materials do not cover all possible control scenarios and are intended for licensed professionals. Tradenames do not imply\u00a0<\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">endorsement and are used as examples. You must strictly follow the label for each compound prior to use. Rutgers is not responsible for<\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">m is used materials or damages thereof. The label is the law. Labels will provide detailed information on use and restrictions. Additionally, <\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">application intervals, compatibility, surfactant use, PHI, PPE, important and other key information is described in detail. Always discuss\u00a0<\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">treatments with your local agents.\u00a0<\/span><\/span><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-scheme-color=\"@C00000,,\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">Note: Neonicotinoids can only be legally applied in commercial agriculture settings by licensed <\/span><\/span><\/span><span class=\"LineBox SCXP56887253 BCX0\"><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-scheme-color=\"@C00000,,\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">applicators.\u00a0<\/span><\/span><span class=\"TextRun SCXP56887253 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-scheme-color=\"@3B7F23,9,18:76000\" data-usefontface=\"false\" data-contrast=\"none\"><span class=\"NormalTextRun SCXP56887253 BCX0\">Guidelines and recommendations made in this presentation are specific to the state of New Jersey.\u00a0<\/span><\/span><\/span><\/h6>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Two Spotted Spider Mite (Tetranychus urticae) GDD Window (base 50): 363-618 (emerging overwintering females) Overview:\u200b\u200b\u200b Microscopic (1\/50\u201d) arachnids with oval bodies, typically yellow-orange in color,\u00a0with two dark spot on each &hellip; <a href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/two-spotted-spider-mite\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":3407,"featured_media":1048,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1045","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pests"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Two Spotted Spider Mite - Nursery IPM<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/two-spotted-spider-mite\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Two Spotted Spider Mite - Nursery IPM\" \/>\n<meta property=\"og:description\" content=\"Two Spotted Spider Mite (Tetranychus urticae) GDD Window (base 50): 363-618 (emerging overwintering females) Overview:\u200b\u200b\u200b Microscopic (1\/50\u201d) arachnids with oval bodies, typically yellow-orange in color,\u00a0with two dark spot on each &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/two-spotted-spider-mite\/\" \/>\n<meta property=\"og:site_name\" content=\"Nursery IPM\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-10T17:01:32+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T19:37:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/2spot-female-dorm-SR-credit.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"791\" \/>\n\t<meta property=\"og:image:height\" content=\"563\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erin O. 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