{"id":1224,"date":"2025-07-22T17:52:29","date_gmt":"2025-07-22T17:52:29","guid":{"rendered":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?p=1224"},"modified":"2025-08-27T19:34:07","modified_gmt":"2025-08-27T19:34:07","slug":"azalea-whitefly","status":"publish","type":"post","link":"https:\/\/sites.rutgers.edu\/nursery-ipm\/azalea-whitefly\/","title":{"rendered":"Azalea Whitefly"},"content":{"rendered":"<h2><strong>Azalea Whitefly (<em>Pealius azaleae<\/em>)<\/strong><\/h2>\n<h4><strong>GDD Window (base 50): 448-700 (1st gen), 1250-1500 (2nd gen), 2032-2150 (3rd gen)<\/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=\"1\" data-aria-level=\"1\"><span data-usefontface=\"true\" data-contrast=\"none\">Tiny, 1\/16\u201d long, powdery white insects that look like very small moths\u00a0<\/span>\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-usefontface=\"true\" data-contrast=\"none\">Adults emerge in the spring and females lay their eggs in the lower <\/span><span data-usefontface=\"true\" data-contrast=\"none\">surfaces of new leaves\u00a0\u00a0<\/span>\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-usefontface=\"true\" data-contrast=\"none\">Eggs are initially creamy white and translucent but turn gray with time\u00a0<\/span>\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"4\" data-aria-level=\"1\"><span data-usefontface=\"true\" data-contrast=\"none\">Crawlers are tiny and yellow, looking like pollen grains\u00a0\u00a0<\/span>\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\"><span data-usefontface=\"true\" data-contrast=\"none\">Crawlers suck sap from the plant using threadlike mouthparts\u00a0\u00a0<\/span>\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\"><span data-usefontface=\"true\" data-contrast=\"none\">Crawlers molt into yellowish-orange, scale-like nymphs\u00a0<\/span>\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\"><span data-usefontface=\"true\" data-contrast=\"none\">Overwinter as nymphs on leaves\u00a0<\/span>\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\">Crawlers and nymphs secrete honeydew, which can grow sooty mold\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\">Infested plants become unattractive\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"10\" data-aria-level=\"1\">Clouds of adults may fly up when a plant is disturbed\u00a0\u00a0\u200b<\/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\">Primarily feed on the underside of leaves, sucking sap, causing leaves to yellow and curl\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\">Can cause premature leaf drop\u00a0\u200b<\/li>\n<li data-charcodes=\"8226\" data-font=\"Arial,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"13\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Host plants:\u00a0<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">all azalea cultivars, rhododendrons, especially those\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">with hairy leaves<\/span>\u200b<\/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\">\u00a0 parasitic wasps <\/span><span data-usefontface=\"false\" data-contrast=\"none\">(<\/span><i><span data-usefontface=\"false\" data-contrast=\"none\">Encarsia<\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span><\/i><i><span data-usefontface=\"false\" data-contrast=\"none\">formosa<\/span><\/i><span data-usefontface=\"false\" data-contrast=\"none\">), lady beetles, l<\/span><span data-usefontface=\"false\" data-contrast=\"none\">acewings, predatory mites<\/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\">Yellow sticky traps<\/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\">Reduce plant stress<\/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\">Improve air circulation between plants<\/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\"><span data-usefontface=\"false\" data-contrast=\"none\">Syringing\u00a0<\/span>\u200b<\/li>\n<\/ul>\n<h5><strong>Materials:<\/strong><\/h5>\n<ul>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Contact insecticides:<\/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<li><span data-usefontface=\"false\" data-contrast=\"none\">Carbamates [1A]: Carbaryl<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<li><b><span data-usefontface=\"false\" data-contrast=\"none\">Systemic insecticides:<\/span><\/b>\u200b\n<ul>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Neonicotinoids [4A]: imidacloprid<\/span>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Abamectin<\/span>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Acephate<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0(translaminar)<\/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 harm non-target species<\/span><\/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\">Buprofezin<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0(IGR)<\/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\">Pyriproxyfen (IGR)<\/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\">Spiromesifen<\/span>\u200b\n<ul>\n<li data-charcodes=\"167\" data-font=\"Wingdings,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1980\" data-aria-posinset=\"5\" data-aria-level=\"3\"><span data-usefontface=\"false\" data-contrast=\"none\">Lipid &amp; cell membrane<\/span><span data-usefontface=\"false\" data-contrast=\"none\">inhibitor<\/span>\u200b<\/li>\n<\/ul>\n<\/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\"><span data-usefontface=\"false\" data-contrast=\"none\">Pymetrozine<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/span>\u200b\n<ul>\n<li data-charcodes=\"167\" data-font=\"Wingdings,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1980\" data-aria-posinset=\"7\" data-aria-level=\"3\"><span data-usefontface=\"false\" data-contrast=\"none\">(select feeding blocker)<\/span>\u200b<\/li>\n<\/ul>\n<\/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\"><span data-usefontface=\"false\" data-contrast=\"none\">Horticultural oils &amp; soaps<\/span>\u200b\n<ul>\n<li data-charcodes=\"167\" data-font=\"Wingdings,Sans-Serif\" data-buautonum=\"8\" data-margin=\"1980\" data-aria-posinset=\"9\" data-aria-level=\"3\"><span data-usefontface=\"false\" data-contrast=\"none\">One treatment in the fall and <\/span><span data-usefontface=\"false\" data-contrast=\"none\">another after new growth <\/span><span data-usefontface=\"false\" data-contrast=\"none\">emerges in the spring\u00a0<\/span>\u200b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"mceTemp\"><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1225\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whiteflies-300x242.jpg\" alt=\"\" width=\"300\" height=\"242\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whiteflies-300x242.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whiteflies.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1226\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whitefly-300x245.jpg\" alt=\"\" width=\"300\" height=\"245\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whitefly-300x245.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whitefly.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1227\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whitefly-eggs-300x269.jpg\" alt=\"\" width=\"300\" height=\"269\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whitefly-eggs-300x269.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whitefly-eggs.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\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>Azalea Whitefly (Pealius azaleae) GDD Window (base 50): 448-700 (1st gen), 1250-1500 (2nd gen), 2032-2150 (3rd gen) Overview:\u200b\u200b\u200b Tiny, 1\/16\u201d long, powdery white insects that look like very small moths\u00a0\u200b &hellip; <a href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/azalea-whitefly\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":3407,"featured_media":1226,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1224","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>Azalea Whitefly - 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\/azalea-whitefly\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Azalea Whitefly - Nursery IPM\" \/>\n<meta property=\"og:description\" content=\"Azalea Whitefly (Pealius azaleae) GDD Window (base 50): 448-700 (1st gen), 1250-1500 (2nd gen), 2032-2150 (3rd gen) Overview:\u200b\u200b\u200b Tiny, 1\/16\u201d long, powdery white insects that look like very small moths\u00a0\u200b &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/azalea-whitefly\/\" \/>\n<meta property=\"og:site_name\" content=\"Nursery IPM\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-22T17:52:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T19:34:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/azalea-whitefly.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"490\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erin O. 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