{"id":1139,"date":"2025-06-24T17:19:57","date_gmt":"2025-06-24T17:19:57","guid":{"rendered":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?p=1139"},"modified":"2025-08-27T19:35:51","modified_gmt":"2025-08-27T19:35:51","slug":"maple-spider-mites","status":"publish","type":"post","link":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/","title":{"rendered":"Maple Spider Mites"},"content":{"rendered":"<h2><strong>Maple Spider Mites (<em>Acer rubrum<\/em>)<\/strong><\/h2>\n<h4><strong>GDD Window (base 50): variable<\/strong><\/h4>\n<h5><\/h5>\n<h4><strong>Overview:<\/strong>\u200b\u200b\u200b<\/h4>\n<ul>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"4\" data-aria-level=\"1\">Overwinter\u00a0in bark crevices as\u00a0adults and\u00a0eggs\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"5\" data-aria-level=\"1\">Some\u00a0also seek refuge under dead armored scale\u00a0insects\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"6\" data-aria-level=\"1\">Migrate\u00a0to the underside of the leaves in the\u00a0spring\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"7\" data-aria-level=\"1\">Adults\u00a0are 0.25-1mm in length, multiple hairs along their\u00a0back,\u00a0and\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"8\" data-aria-level=\"1\">reddish\u00a0brown in\u00a0color\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"9\" data-aria-level=\"1\">Eggs\u00a0are spherical, and red to clear in\u00a0color\u00a0\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1170\" data-aria-posinset=\"10\" data-aria-level=\"2\">Found in bark crevices, along leaf veins, or near branch buds\u00a0\u00a0\u200b<\/li>\n<\/ul>\n<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"11\" data-aria-level=\"1\">Larvae\u00a0have six legs, adults have\u00a0eight\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"12\" data-aria-level=\"1\">Larvae\u00a0and nymphs have lighter colorations or a green\u00a0hue\u00a0\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"13\" data-aria-level=\"1\">Have\u00a0needle-like mouthparts that rupture plant\u00a0cells\u00a0\u00a0\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1170\" data-aria-posinset=\"14\" data-aria-level=\"2\">Feeds on cell mesophyll\u00a0\u200b<\/li>\n<\/ul>\n<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"15\" data-aria-level=\"1\">Multiple\u00a0years of damage can reduce plant vigor and\u00a0growth\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"16\" data-aria-level=\"1\">Damage\u00a0increases in hot\u00a0weather\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"17\" data-aria-level=\"1\">2-3 weeks to complete one generation, and many\u00a0generations\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"18\" data-aria-level=\"1\">occur\u00a0per\u00a0season\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"19\" data-aria-level=\"1\">Causes\u00a0brown flecking or stippling of the\u00a0foliage\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"20\" data-aria-level=\"1\">Entire\u00a0leaves can become yellow, silver, or bronzed\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-usefontface=\"true\" data-contrast=\"none\">Host plants<\/span><\/b><b><span data-usefontface=\"true\" data-contrast=\"none\">: <\/span><\/b>maple trees (<i>Acer\u00a0<\/i>spp.),\u00a0particularly red maples\u200b\n<ul>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"2\" data-aria-level=\"1\">(<i>Acer<\/i><i>\u00a0rubrum<\/i>)\u00a0and Freeman maples (<i>Acer x\u00a0<\/i><i>freemanii<\/i>)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4><strong>Management:<\/strong><\/h4>\n<h5><strong>Cultural Practices:<\/strong><\/h5>\n<ul>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Natural predators:<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0 lady beetles, thrips, <\/span><span data-usefontface=\"false\" data-contrast=\"none\">predatory mites, lacewing larvae, minute <\/span><span data-usefontface=\"false\" data-contrast=\"none\">pirate bugs<\/span>\u200b<\/li>\n<li><span data-usefontface=\"true\" data-contrast=\"none\">Cultivate an environment that attracts natural <\/span><span data-usefontface=\"true\" data-contrast=\"none\">predators\u00a0<\/span>\u200b\n<ul>\n<li>Diverse flowers, water sources\u00a0\u200b<\/li>\n<\/ul>\n<\/li>\n<li>Scout in the spring\u00a0\u200b\n<ul>\n<li>Spider mites are small, slowly moving, brown or black dots\u00a0\u200b<\/li>\n<li>Predatory mites are fast moving\u00a0\u00a0\u200b<\/li>\n<li>Scout on susceptible cultivars or trees that were the most damaged the previous year\u00a0\u00a0\u200b<\/li>\n<\/ul>\n<\/li>\n<li>Reduce plant stress\u00a0\u200b\n<ul>\n<li>Proper planting, spacing, and water\u00a0\u00a0\u200b<\/li>\n<li>Avoid excessive nitrogen fertilization\u200b<\/li>\n<\/ul>\n<\/li>\n<li>Do\u00a0not\u00a0spray\u00a0carbaryl\u00a0(aphrodisiac)\u200b<\/li>\n<\/ul>\n<h5><strong>Materials:<\/strong><\/h5>\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Contact insecticides:<\/span><\/b>\u200b\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\"><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 data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Systemic insecticides:<\/span><\/b>\u200b\n<ul>\n<li data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"4\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Avermectins<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0[6]: abamectin<\/span>\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\"><span data-usefontface=\"false\" data-contrast=\"none\">Acephate<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0(translaminar)<\/span>\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1170\" data-aria-posinset=\"6\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Bifenazate<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0[20D] (reduced risk)<\/span>\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"7\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Acequinocyl<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0[20B] (reduced risk)<\/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 data-charcodes=\"111\" data-font=\"Courier New,monospace\" data-buautonum=\"8\" data-margin=\"1260\" data-aria-posinset=\"9\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">May harm non-target species<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>Biorationals:<\/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\"><span data-usefontface=\"false\" data-contrast=\"none\">Horticultural oils<\/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\"><span data-usefontface=\"false\" data-contrast=\"none\">Insecticidal soaps<\/span>\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\"><span data-usefontface=\"false\" data-contrast=\"none\">Hexythiazox<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0(MGR)<\/span>\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\"><span data-usefontface=\"false\" data-contrast=\"none\">Spiromesifen<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0(MGR)<\/span>\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\"><i><span data-usefontface=\"false\" data-contrast=\"none\">Beauvaria<\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0bassiana<\/span><\/i><\/li>\n<\/ul>\n<h4><strong>Resources:<\/strong><\/h4>\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<\/a><\/p>\n<p>&nbsp;<\/p>\n<div class=\"mceTemp\"><\/div>\n<figure id=\"attachment_1140\" aria-describedby=\"caption-attachment-1140\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1140\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/Maple-Spider-Mites-Infest-Maple-Trees-in-Nursery1-300x199-1.jpg\" alt=\"\" width=\"300\" height=\"199\" \/><figcaption id=\"caption-attachment-1140\" class=\"wp-caption-text\">Host Specific Maple Spider Mites Infest Trees at Right in a Cumberland County Nursery Photo: Steven K. Rettke (RCE)<\/figcaption><\/figure>\n<figure id=\"attachment_1141\" aria-describedby=\"caption-attachment-1141\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1141\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2-300x200.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2-1024x682.jpg 1024w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2-768x512.jpg 768w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2-1536x1023.jpg 1536w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg 2032w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1141\" class=\"wp-caption-text\">Photo: Steven K. Rettke (RCE)<\/figcaption><\/figure>\n<figure id=\"attachment_1142\" aria-describedby=\"caption-attachment-1142\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1142\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-3-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-3-300x200.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-3-1024x682.jpg 1024w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-3-768x512.jpg 768w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-3-1536x1023.jpg 1536w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-3.jpg 2032w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1142\" class=\"wp-caption-text\">Photo: Steven K. Rettke (RCE)<\/figcaption><\/figure>\n<div class=\"mceTemp\"><\/div>\n<div class=\"mceTemp\"><\/div>\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>Maple Spider Mites (Acer rubrum) GDD Window (base 50): variable Overview:\u200b\u200b\u200b Overwinter\u00a0in bark crevices as\u00a0adults and\u00a0eggs\u00a0\u200b Some\u00a0also seek refuge under dead armored scale\u00a0insects\u00a0\u00a0\u200b Migrate\u00a0to the underside of the leaves in &hellip; <a href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":3407,"featured_media":1141,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1139","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>Maple Spider Mites - 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\/maple-spider-mites\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Maple Spider Mites - Nursery IPM\" \/>\n<meta property=\"og:description\" content=\"Maple Spider Mites (Acer rubrum) GDD Window (base 50): variable Overview:\u200b\u200b\u200b Overwinter\u00a0in bark crevices as\u00a0adults and\u00a0eggs\u00a0\u200b Some\u00a0also seek refuge under dead armored scale\u00a0insects\u00a0\u00a0\u200b Migrate\u00a0to the underside of the leaves in &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/\" \/>\n<meta property=\"og:site_name\" content=\"Nursery IPM\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-24T17:19:57+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T19:35:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2032\" \/>\n\t<meta property=\"og:image:height\" content=\"1354\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erin O. Quinn\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Erin O. Quinn\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/\",\"url\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/\",\"name\":\"Maple Spider Mites - Nursery IPM\",\"isPartOf\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg\",\"datePublished\":\"2025-06-24T17:19:57+00:00\",\"dateModified\":\"2025-08-27T19:35:51+00:00\",\"author\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/1a070508b880ef7fe0dc180e168e64cf\"},\"breadcrumb\":{\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#primaryimage\",\"url\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg\",\"contentUrl\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg\",\"width\":2032,\"height\":1354,\"caption\":\"Photo: Steven K. Rettke (RCE)\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Maple Spider Mites\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#website\",\"url\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/\",\"name\":\"Nursery IPM\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/1a070508b880ef7fe0dc180e168e64cf\",\"name\":\"Erin O. Quinn\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/a5e6879be80394bab29d973d1210e67f?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/a5e6879be80394bab29d973d1210e67f?s=96&d=mm&r=g\",\"caption\":\"Erin O. Quinn\"},\"url\":\"https:\/\/sites.rutgers.edu\/nursery-ipm\/author\/eoq1\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Maple Spider Mites - Nursery IPM","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/","og_locale":"en_US","og_type":"article","og_title":"Maple Spider Mites - Nursery IPM","og_description":"Maple Spider Mites (Acer rubrum) GDD Window (base 50): variable Overview:\u200b\u200b\u200b Overwinter\u00a0in bark crevices as\u00a0adults and\u00a0eggs\u00a0\u200b Some\u00a0also seek refuge under dead armored scale\u00a0insects\u00a0\u00a0\u200b Migrate\u00a0to the underside of the leaves in &hellip; Read More","og_url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/","og_site_name":"Nursery IPM","article_published_time":"2025-06-24T17:19:57+00:00","article_modified_time":"2025-08-27T19:35:51+00:00","og_image":[{"width":2032,"height":1354,"url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg","type":"image\/jpeg"}],"author":"Erin O. Quinn","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Erin O. Quinn","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/","url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/","name":"Maple Spider Mites - Nursery IPM","isPartOf":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#website"},"primaryImageOfPage":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#primaryimage"},"image":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#primaryimage"},"thumbnailUrl":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg","datePublished":"2025-06-24T17:19:57+00:00","dateModified":"2025-08-27T19:35:51+00:00","author":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/1a070508b880ef7fe0dc180e168e64cf"},"breadcrumb":{"@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#primaryimage","url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg","contentUrl":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/June-24-2-Mites-Maple-Spider-Mites-2.jpg","width":2032,"height":1354,"caption":"Photo: Steven K. Rettke (RCE)"},{"@type":"BreadcrumbList","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/maple-spider-mites\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/sites.rutgers.edu\/nursery-ipm\/"},{"@type":"ListItem","position":2,"name":"Maple Spider Mites"}]},{"@type":"WebSite","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#website","url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/","name":"Nursery IPM","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/1a070508b880ef7fe0dc180e168e64cf","name":"Erin O. Quinn","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sites.rutgers.edu\/nursery-ipm\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/a5e6879be80394bab29d973d1210e67f?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a5e6879be80394bab29d973d1210e67f?s=96&d=mm&r=g","caption":"Erin O. Quinn"},"url":"https:\/\/sites.rutgers.edu\/nursery-ipm\/author\/eoq1\/"}]}},"_links":{"self":[{"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/posts\/1139"}],"collection":[{"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/users\/3407"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/comments?post=1139"}],"version-history":[{"count":3,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/posts\/1139\/revisions"}],"predecessor-version":[{"id":1304,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/posts\/1139\/revisions\/1304"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/media\/1141"}],"wp:attachment":[{"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/media?parent=1139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/categories?post=1139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-json\/wp\/v2\/tags?post=1139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}