{"id":1062,"date":"2025-06-10T17:31:46","date_gmt":"2025-06-10T17:31:46","guid":{"rendered":"https:\/\/sites.rutgers.edu\/nursery-ipm\/?p=1062"},"modified":"2025-08-27T19:37:28","modified_gmt":"2025-08-27T19:37:28","slug":"cottony-camellia-scale","status":"publish","type":"post","link":"https:\/\/sites.rutgers.edu\/nursery-ipm\/cottony-camellia-scale\/","title":{"rendered":"Cottony Camellia Scale"},"content":{"rendered":"<h2><strong>Cottony Camellia Scale (<em>Pulvinaria floccifera<\/em>)<\/strong><\/h2>\n<h4><strong>GDD Window (base 50): 802-1388\u00a0<\/strong><\/h4>\n<h5><\/h5>\n<h4><strong>Overview:<\/strong>\u200b\u200b\u200b<\/h4>\n<ul>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"3\" data-aria-level=\"1\">Soft scales with a cottony mass of eggs found on branches and leaves of host plants\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"4\" data-aria-level=\"1\">Mature females are oval shaped, and yellowish tan with a brown outer ring, growing up to 1\/8&#8243; in length\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"5\" data-aria-level=\"1\">Adults are usually found on the undersides of foliage\u00a0\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"6\" data-aria-level=\"1\">White egg sac remains attached to the foliage after the female dies and falls to the ground\u00a0\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"7\" data-aria-level=\"1\">Overwinters on the bark of deciduous plants, and on the foliage of evergreens\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"8\" data-aria-level=\"1\">Crawlers are pale yellow\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"9\" data-aria-level=\"1\">One generation per year\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"10\" data-aria-level=\"1\">Produces honeydew which grows sooty mold\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"450\" data-aria-posinset=\"11\" data-aria-level=\"1\"><span data-usefontface=\"false\" data-contrast=\"none\">Leads to leaf yellowing and reduced plant vigor<\/span>\u200b<\/li>\n<li data-charcodes=\"45\" data-font=\"Calibri,Sans-Serif\" data-buautonum=\"8\" data-margin=\"540\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-usefontface=\"false\" data-contrast=\"none\">Host plants<\/span><\/b><b><span data-usefontface=\"false\" data-contrast=\"none\">:\u00a0<\/span><\/b><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0over 37 plant families<\/span>\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\">Yew, Holly, Camellia<\/li>\n<\/ul>\n<\/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><span data-usefontface=\"false\" data-contrast=\"none\">parasitic wasps<\/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\">Monitor populations and remove scales manually\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\">Prune heavily infested branches<\/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><span data-usefontface=\"false\" data-contrast=\"none\">dinotefuran<\/span>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Organophosphates [1B]:\u00a0<\/span><span data-usefontface=\"false\" data-contrast=\"none\">acephate<\/span><span data-usefontface=\"false\" data-contrast=\"none\">\u00a0<\/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>\u200b<\/li>\n<li><span data-usefontface=\"false\" data-contrast=\"none\">Target sprays during crawler stage<\/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 soap<\/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\">Neonic: acetamiprid\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\">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=\"6\" data-aria-level=\"2\"><span data-usefontface=\"false\" data-contrast=\"none\">Pyriproxyfen (IGR)<\/span>\u200b<\/li>\n<\/ul>\n<h4><strong>Resources:<\/strong><\/h4>\n<h5><strong><a class=\"btn btn-primary\" href=\"https:\/\/plant-pest-advisory.rutgers.edu\/some-key-soft-scale-pests-in-the-landscape\/\" target=\"_blank\" rel=\"noopener\">Some Key Soft Scale Pests in the Landscape &#8211; PPA<\/a><\/strong><\/h5>\n<div class=\"mceTemp\"><\/div>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_1063\" aria-describedby=\"caption-attachment-1063\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1063\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc12-Cottony-Camillia-Scale-300x220.jpg\" alt=\"\" width=\"300\" height=\"220\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc12-Cottony-Camillia-Scale-300x220.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc12-Cottony-Camillia-Scale.jpg 734w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1063\" class=\"wp-caption-text\">Extreme populations of cottony camellia scale feeding primarily on undersides of leaves. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)<\/figcaption><\/figure>\n<figure id=\"attachment_1064\" aria-describedby=\"caption-attachment-1064\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1064\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc11-Cottony-Camellia-Scale-300x221.jpg\" alt=\"\" width=\"300\" height=\"221\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc11-Cottony-Camellia-Scale-300x221.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc11-Cottony-Camellia-Scale.jpg 728w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1064\" class=\"wp-caption-text\">Cottony camellia scale white ovisacs may contain many hundreds of eggs. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)<\/figcaption><\/figure>\n<figure id=\"attachment_1065\" aria-describedby=\"caption-attachment-1065\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1065\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc13-Cottony-Camellia-Scale-egg-mass-300x219.jpg\" alt=\"\" width=\"300\" height=\"219\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc13-Cottony-Camellia-Scale-egg-mass-300x219.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc13-Cottony-Camellia-Scale-egg-mass.jpg 744w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1065\" class=\"wp-caption-text\">Close-up of a single cottony camellia egg ovisac. Dead female has already detached &amp; fallen-off leaf. Evidence of emerged crawlers can be seen. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)<\/figcaption><\/figure>\n<figure id=\"attachment_1066\" aria-describedby=\"caption-attachment-1066\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1066\" src=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc14-Cottony-Camellia-Scale-crawlers-300x212.jpg\" alt=\"\" width=\"300\" height=\"212\" srcset=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc14-Cottony-Camellia-Scale-crawlers-300x212.jpg 300w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc14-Cottony-Camellia-Scale-crawlers-768x543.jpg 768w, https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc14-Cottony-Camellia-Scale-crawlers.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-1066\" class=\"wp-caption-text\">White wax scraped away from ovisac reveals the numerous eggs &amp; some emerging crawlers migrating onto leaves. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)<\/figcaption><\/figure>\n<div class=\"mceTemp\"><\/div>\n<div class=\"mceTemp\"><\/div>\n<p>&nbsp;<\/p>\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>Cottony Camellia Scale (Pulvinaria floccifera) GDD Window (base 50): 802-1388\u00a0 Overview:\u200b\u200b\u200b Soft scales with a cottony mass of eggs found on branches and leaves of host plants\u200b Mature females are &hellip; <a href=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/cottony-camellia-scale\/\" class=\"\">Read More<\/a><\/p>\n","protected":false},"author":3407,"featured_media":1065,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1062","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>Cottony Camellia Scale - 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\/cottony-camellia-scale\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cottony Camellia Scale - Nursery IPM\" \/>\n<meta property=\"og:description\" content=\"Cottony Camellia Scale (Pulvinaria floccifera) GDD Window (base 50): 802-1388\u00a0 Overview:\u200b\u200b\u200b Soft scales with a cottony mass of eggs found on branches and leaves of host plants\u200b Mature females are &hellip; Read More\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/cottony-camellia-scale\/\" \/>\n<meta property=\"og:site_name\" content=\"Nursery IPM\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-10T17:31:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T19:37:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sites.rutgers.edu\/nursery-ipm\/wp-content\/uploads\/sites\/1396\/2025\/07\/cc13-Cottony-Camellia-Scale-egg-mass.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"744\" \/>\n\t<meta property=\"og:image:height\" content=\"542\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erin O. 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