{"id":32756,"date":"2026-05-19T17:28:57","date_gmt":"2026-05-19T21:28:57","guid":{"rendered":"https:\/\/www.novaextermination.com\/extermination\/magnolia-mealybugs\/"},"modified":"2026-07-20T12:31:34","modified_gmt":"2026-07-20T16:31:34","slug":"magnolia-mealybugs","status":"publish","type":"extermination","link":"https:\/\/www.novaextermination.com\/en\/extermination\/magnolia-mealybugs\/","title":{"rendered":"Magnolia mealybugs"},"content":{"rendered":"\n<!--NOVA_RATING_START--><div class=\"nova-rating-src\" hidden=\"\"><a href=\"https:\/\/search.google.com\/local\/reviews?placeid=ChIJrwH6caP-yEwR6PfHI875QhI\" target=\"_blank\" rel=\"noopener nofollow\" class=\"nova-rating-link\"><span class=\"rstars\">\u2605\u2605\u2605\u2605\u2605<\/span><span class=\"rtext\">4.9\/5 \u2022 203 Google reviews<\/span><\/a><\/div><style>.nova-rating-hero<span>text-align:center;margin:12px auto 4px;position:relative;z-index:3.nova-rating-hero .nova-rating-link<span>text-decoration:none;display:inline-block.nova-rating-hero .rstars<span>font-size:27px;letter-spacing:4px;line-height:1;filter:drop-shadow(0 1px 3px rgba(0,0,0,.5)).nova-rating-hero .rstars,.nova-hero-live .nova-rating-hero .rstars<span>color:#FBBC05!important.nova-rating-hero .rtext<span>display:block;color:#fff;font-weight:700;font-size:16px;margin-top:5px;text-shadow:0 1px 5px rgba(0,0,0,.6)<\/style><script>(function(){var S=document.querySelectorAll('.nova-rating-src');var node=S[S.length-1];if(!node)return;function init()<span>if(node.__rdone)return;var h1=document.querySelector('h1');if(!h1)return;node.__rdone=1;var b=document.createElement('div');b.className='nova-rating-hero';b.innerHTML=node.innerHTML;var anchor=h1.closest('.elementor-widget')||h1;anchor.parentNode.insertBefore(b,anchor.nextSibling);if(document.readyState!=='loading')init();else document.addEventListener('DOMContentLoaded',init);window.addEventListener('load',init);})();<\/script><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\/\", \"@type\": \"Product\", \"name\": \"Cochenilles du magnolia\", \"description\": \"Service d'extermination : Cochenilles du magnolia. Nova Extermination, exterminateur certifie sur la Rive-Sud de Montreal et en Monteregie.\", \"brand\": <span>\"@type\": \"Brand\", \"name\": \"Nova Extermination\", \"aggregateRating\": <span>\"@type\": \"AggregateRating\", \"ratingValue\": \"4.9\", \"reviewCount\": \"203\", \"bestRating\": \"5\", \"worstRating\": \"1\"<\/script><!--NOVA_RATING_END-->\n<p>Weakens the tree (dieback of branches), leaves stained black by sooty mold, sticky honeydew on vehicles and terraces under the tree, presence of ants attracted by honeydew.<\/p>\n<p>Nova Extermination treats magnolia scale (<em>Neolecanium cornuparvum<\/em>) on the South Shore of Montreal, with a protocol adapted to the life cycle of the species and a guarantee adapted to the case. License RBQ 5734 75930 01. <\/p>\n<h2>How to recognize magnolia scale<\/h2>\n<p>Correctly identifying the pest is the first step in a long-lasting treatment. Incorrect identification, for example confusing German cockroach and oriental cockroach or confusing native ladybug and Asian ladybug, leads to inappropriate treatment and recurrence within a few weeks. If you are unsure, compare it with our <a href=\"https:\/\/www.novaextermination.com\/en\/prevention-services\/\">pest prevention<\/a> sheet or send us a photo by text at 514 666 6682.  <\/p>\n<h3>Quick Identification Sheet<\/h3>\n<table class=\"nova-id-card\">\n<tbody>\n<tr>\n<td><strong>Adult female appearance<\/strong><\/td>\n<td>6 to 12 mm, dark brown half-sphere shape attached to the branches<\/td>\n<\/tr>\n<tr>\n<td><strong>Specific preferred habitat<\/strong><\/td>\n<td>of the magnolia (all species, especially Magnolia stellata and soulangeana), sucks sap, secretes a sticky honeydew that attracts ants and promotes sooty mold<\/td>\n<\/tr>\n<tr>\n<td><strong>Life cycle<\/strong><\/td>\n<td>one generation per year, release of the young mobiles at the end of June and beginning of July on the South Shore, fixation and wintering on the branches<\/td>\n<\/tr>\n<tr>\n<td><strong>Typical damage<\/strong><\/td>\n<td>weakens the tree (dieback of branches), leaves stained black by sooty mold, sticky honeydew on vehicles and terraces under the tree, presence of ants attracted to honeydew<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Store a dead specimen in a closed plastic bag if possible. Our technician confirms the species at the beginning of the visit, which determines the protocol and duration of the treatment. <\/p>\n<h2>Signs of an active infestation<\/h2>\n<ul>\n<li>Presence of live individuals during the day (usually a sign of an established infestation)<\/li>\n<li>Moulting, exuviae or corpses found in the nooks and crannies<\/li>\n<li>Eggs or egg capsules (for cockroaches, mealworms)<\/li>\n<li>Persistent characteristic smell (cockroaches, bedbugs)<\/li>\n<li>Traces of droppings on storage areas<\/li>\n<li>For biters (mosquitoes, bedbugs): recent skin marks on occupants<\/li>\n<\/ul>\n<p>The earlier the diagnosis, the less treatment costs. An infestation detected in 5 individuals can be treated in 1 visit. With 50 individuals, count 2 to 3 visits.  <\/p>\n<h2>Life cycle and spread<\/h2>\n<p>One generation per year, the young mobiles come out at the end of June and beginning of July on the south shore, fixing and wintering on the branches.<\/p>\n<p>Understanding this cycle is essential: a treatment that covers only adults (e.g. a surface sprayer) leaves the eggs intact. Two weeks later, the infestation resumed. Our protocol covers THE entire incubation period, which explains the follow-up visit provided for in the package.  <\/p>\n<h2>Our treatment method<\/h2>\n<p>Treatment by systemic injection to the trunk (passes through the sap, reaches the fixed mealybug), application of horticultural oil on branches in winter dormancy, followed at 1 year, sanitary pruning if dieback.<\/p>\n<p><strong>Total duration:<\/strong> injection 30 minutes per tree, visible effect in 3 to 6 weeks.<\/p>\n<h3>Why we avoid aggressive spraying<\/h3>\n<p>A wide spray may seem effective, but it disperses the colony to other areas (repulsion effect) and complicates the final treatment. Our approach: targeted bait in gel or in stations, residual treatment only where necessary, and zero product on food preparation or coating surfaces. <\/p>\n<h2>Underwriting and Inspection<\/h2>\n<p>Here are the service variants we offer for this need:<\/p>\n<ul>\n<li>Shaft Systemic Injection<\/li>\n<li>2-year annual plan (including monitoring)<\/li>\n<\/ul>\n<h3>What influences the quote<\/h3>\n<ul>\n<li>Surface or volume to be treated<\/li>\n<li>Extent of the infestation or situation<\/li>\n<li>Accessibility of the areas concerned<\/li>\n<li>Response time requested (planned or emergency)<\/li>\n<li>Scope of the desired warranty<\/li>\n<li>Documentation required for insurer, notary or audit<\/li>\n<\/ul>\n<p>The inspection is <strong>non-binding<\/strong>. We evaluate on site (or by phone as the case may be) and give you a written estimate adapted to your building before any work begins. No unpleasant surprises at the end.  <\/p>\n<h2>What you can do before our tour<\/h2>\n<ul>\n<li><strong>Do not use any aerosol products<\/strong> in infested areas: this disperses insects and distorts our diagnosis<\/li>\n<li><strong>Do not move furniture<\/strong> or appliances (technicians want to see them in their normal position)<\/li>\n<li><strong>Store a dead specimen<\/strong> in a closed plastic bag to confirm the species<\/li>\n<li><strong>Note where and when<\/strong> you observe insects (useful for targeting treatment)<\/li>\n<li><strong>For bed bugs specifically<\/strong> : do not throw away the mattress before we come, this complicates the quote and can spread the infestation<\/li>\n<\/ul>\n<h2>Common mistakes to avoid<\/h2>\n<ul>\n<li><strong>Buy consumer products<\/strong> : they kill a few visible adults but are rarely effective over the entire cycle<\/li>\n<li><strong>Multiplying home treatments<\/strong> : creates resistance in certain populations, complicates our protocols afterwards<\/li>\n<li><strong>Wait for it to pass<\/strong> : the population doubles every 28 days for most species, the cost of treatment too<\/li>\n<li><strong>Do not report to neighbours<\/strong> (in condominiums or triplexes): the infestation returns if neighbouring units are not treated<\/li>\n<\/ul>\n<h2>Questions<\/h2>\n<h3>Is my magnolia doomed?<\/h3>\n<p>Not necessarily. An early treated magnolia fully recovers in 1 to 2 seasons. The key is to intervene before the major dieback of several branches.  <\/p>\n<h3>When is the best time for treatment?<\/h3>\n<p>The systemic injection is done in the spring (rising sap). Horticultural oil is applied in winter dormancy. Depending on the stadium, one, the other, or both.  <\/p>\n<h3>Can mealybugs get on my other trees?<\/h3>\n<p>This species (Neolecanium cornuparvum) is specific to the magnolia. It does not contaminate other trees. <\/p>\n<h3>Why do I have so many ants under my magnolia?<\/h3>\n<p>Ants are attracted to the sweet honeydew that mealybugs produce. Eliminating mealybugs also eliminates the associated ant problem. <\/p>\n<h3>How long before magnolia scale is totally eliminated?<\/h3>\n<p>Allow 2 to 6 weeks depending on the species&#8217; cycle. A visible reduction appears from the first week. Complete elimination occurs after all the eggs present have hatched and the second wave has been treated.  <\/p>\n<h3>What exactly does the written warranty cover?<\/h3>\n<p>Recurrence of the same species in the treated area during the indicated period (typically 60 to 90 days for magnolia scale insect). If the infestation returns, we schedule a follow-up according to the conditions of your warranty. <\/p>\n<h2>Contact Nova Extermination<\/h2>\n<p>Inspection within 24 hours, quick intervention. Intervention the next day. Coverage assessed on a case-by-case basis, depending on the condition of the building. Call <strong>514 666 6682<\/strong> or fill out the contact form for magnolia mealybug treatment.   <\/p>\n<p><small>Nova Extermination, RBQ license 5734 75930 01. Service 7 days a week, including public holidays. Health Canada Licensed Products.  <\/small><\/p>\n\n<!--NOVA_FAQ_START--><style>.nova-faq<span>max-width:900px;margin:44px auto;padding:0 16px;font-family:'Inter',sans-serif.nova-faq__title<span>font-family:'Montserrat',sans-serif;font-size:28px;font-weight:700;color:#BF1E2E;text-align:center;margin:0 0 26px.nova-faq__item<span>border:1px solid #ececec;border-radius:10px;margin-bottom:12px;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.04);overflow:hidden.nova-faq__item[open]<span>box-shadow:0 6px 18px rgba(0,0,0,.09).nova-faq__q<span>font-family:'Montserrat',sans-serif;font-weight:600;font-size:17px;color:#1a1a1a;padding:18px 52px 18px 20px;cursor:pointer;list-style:none;position:relative.nova-faq__q::-webkit-details-marker<span>display:none.nova-faq__q::after<span>content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:26px;line-height:1;color:#BF1E2E;font-weight:400;transition:transform .2s.nova-faq__item[open] .nova-faq__q::after<span>content:'\\2212'.nova-faq__a<span>padding:2px 20px 20px;color:#444;font-size:16px;line-height:1.65.nova-faq__a p<span>margin:0\/* remplace la FAQ generique du gabarit sur les pages de service *\/.elementor-element-a5f60a6<span>display:none!important<\/style><section class=\"nova-faq\" aria-label=\"Foire aux questions\"><h2 class=\"nova-faq__title\">Frequently Asked Questions: Magnolia Scale<\/h2><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">What is magnolia scale and how do I recognize it?<\/summary><div class=\"nova-faq__a\"><p>The magnolia scale is a sucking insect that settles on the branches and twigs of magnolias, forming white cottony clumps or small waxy bumps. It is one of the largest mealybugs in North America and weakens the tree by feeding on its sap. In Mont\u00e9r\u00e9gie, Boucherville and Saint-Bruno, it is a frequent problem on ornamental magnolias.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">What damage does mealybug cause to my magnolia?<\/summary><div class=\"nova-faq__a\"><p>By pumping sap, it weakens the tree, causes yellowing and falling leaves and can interfere with flowering. It also secretes a sticky honeydew that promotes the appearance of sooty mold, a black mold covering the foliage. A severe and repeated infestation can eventually compromise the health of the tree.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">When should magnolia scale be treated?<\/summary><div class=\"nova-faq__a\"><p>The timing of treatment is important as the young crawler stage must often be targeted for effective control, usually based on their seasonal cycle. Our technician evaluates the tree and the degree of infestation to determine the appropriate period and method. Follow-up may be necessary to monitor new generations.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">How is an infested magnolia tree treated?<\/summary><div class=\"nova-faq__a\"><p>After evaluating the tree, our technician applies an approved treatment adapted to the stage of the mealybug, targeting the affected branches and twigs. Depending on the situation, complementary interventions or seasonal monitoring may be recommended to control the population. We take into account the general condition of the tree and its environment.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">How much does it cost to treat magnolia mealybug?<\/summary><div class=\"nova-faq__a\"><p>The price is based on an evaluation, depending on the size of the tree, the degree of infestation and the number of interventions required. Each tree being different, no fixed rate can be announced without having seen it. The amount is presented to you before the work, our services being paid.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">Can magnolia scale be completely eliminated?<\/summary><div class=\"nova-faq__a\"><p>We aim for sustainable results that are assessed on a case-by-case basis: on a tree, it is often a question of controlling the population and restoring the vigour of the magnolia rather than guaranteeing total elimination. Monitoring and sometimes several seasonal interventions are necessary to keep the infestation below the damage threshold. Our technician will explain the realistic expectations for your tree.  <\/p><\/div><\/details><\/section><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Qu'est-ce que la cochenille du magnolia et comment la reconna\u00eetre?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"La cochenille du magnolia est un insecte suceur qui s'installe sur les branches et rameaux des magnolias, formant des amas cotonneux blancs ou des petites bosses cireuses. C'est l'une des plus grosses cochenilles en Am\u00e9rique du Nord et elle affaiblit l'arbre en se nourrissant de sa s\u00e8ve. En Mont\u00e9r\u00e9gie, \u00e0 Boucherville comme \u00e0 Saint-Bruno, elle est un probl\u00e8me fr\u00e9quent sur les magnolias ornementaux.\", {\"@type\": \"Question\", \"name\": \"Quels dommages la cochenille cause-t-elle \u00e0 mon magnolia?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"En pompant la s\u00e8ve, elle affaiblit l'arbre, provoque le jaunissement et la chute des feuilles et peut nuire \u00e0 la floraison. Elle s\u00e9cr\u00e8te aussi un miellat collant qui favorise l'apparition de fumagine, une moisissure noire recouvrant le feuillage. Une infestation s\u00e9v\u00e8re et r\u00e9p\u00e9t\u00e9e peut, \u00e0 terme, compromettre la sant\u00e9 de l'arbre.\", {\"@type\": \"Question\", \"name\": \"Quand faut-il traiter la cochenille du magnolia?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Le moment du traitement est important, car il faut souvent viser le stade des jeunes larves mobiles pour un contr\u00f4le efficace, g\u00e9n\u00e9ralement en fonction de leur cycle saisonnier. Notre technicien \u00e9value l'arbre et le degr\u00e9 d'infestation pour d\u00e9terminer la p\u00e9riode et la m\u00e9thode appropri\u00e9es. Un suivi peut \u00eatre n\u00e9cessaire pour surveiller les nouvelles g\u00e9n\u00e9rations.\", {\"@type\": \"Question\", \"name\": \"Comment se d\u00e9roule le traitement d'un magnolia infest\u00e9?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Apr\u00e8s avoir \u00e9valu\u00e9 l'arbre, notre technicien applique un traitement homologu\u00e9 adapt\u00e9 au stade de la cochenille, en ciblant les branches et rameaux atteints. Selon la situation, des interventions compl\u00e9mentaires ou un suivi saisonnier peuvent \u00eatre recommand\u00e9s pour ma\u00eetriser la population. Nous tenons compte de l'\u00e9tat g\u00e9n\u00e9ral de l'arbre et de son environnement.\", {\"@type\": \"Question\", \"name\": \"Combien co\u00fbte le traitement de la cochenille du magnolia?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Le prix est \u00e9tabli sur \u00e9valuation, selon la taille de l'arbre, le degr\u00e9 d'infestation et le nombre d'interventions requises. Chaque arbre \u00e9tant diff\u00e9rent, aucun tarif fixe ne peut \u00eatre annonc\u00e9 sans l'avoir vu. Le montant vous est pr\u00e9sent\u00e9 avant les travaux, nos services \u00e9tant payants.\", {\"@type\": \"Question\", \"name\": \"Peut-on \u00e9liminer compl\u00e8tement la cochenille du magnolia?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Nous visons des r\u00e9sultats durables \u00e9valu\u00e9s au cas par cas: sur un arbre, il s'agit souvent de contr\u00f4ler la population et de r\u00e9tablir la vigueur du magnolia plut\u00f4t que de garantir une \u00e9limination totale. Un suivi et parfois plusieurs interventions saisonni\u00e8res sont n\u00e9cessaires pour maintenir l'infestation sous le seuil de dommages. Notre technicien vous explique les attentes r\u00e9alistes pour votre arbre.\"]}<\/script><!--NOVA_FAQ_END-->\n","protected":false},"excerpt":{"rendered":"<p>Removal of magnolia scale by systemic injection into the trunk, application of winter dormant horticultural oil, annual monitoring plan.<\/p>\n","protected":false},"featured_media":30340,"template":"","meta":{"_acf_changed":false,"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"yasr_overall_rating":0,"yasr_post_is_review":"","yasr_auto_insert_disabled":"","yasr_review_type":""},"extermination_animaux":[],"class_list":["post-32756","extermination","type-extermination","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Treatment of magnolia mealybugs | Nova Extermination<\/title>\n<meta name=\"description\" content=\"Treatment of magnolia mealybugs (Neolecanium cornuparvum). 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