{"id":21413,"date":"2025-11-19T09:13:38","date_gmt":"2025-11-19T13:13:38","guid":{"rendered":"https:\/\/www.naturenb.ca\/?p=21413"},"modified":"2025-11-19T09:38:48","modified_gmt":"2025-11-19T13:38:48","slug":"pourquoi-cultiver-limmortelle-blanche","status":"publish","type":"post","link":"https:\/\/www.naturenb.ca\/fr\/pourquoi-cultiver-limmortelle-blanche\/","title":{"rendered":"Pourquoi cultiver l’Immortelle blanche?"},"content":{"rendered":"\n

Pourquoi cultiver l’Immortelle blanche?<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Ce blogue invit\u00e9 fait partie d’une s\u00e9rie d’articles r\u00e9dig\u00e9s par des \u00e9tudiants de l’Universit\u00e9 Mount Allison, dans le cadre d’un partenariat entre Nature NB et le cours \u00ab Applied Native Plants and Pollinator Conservation \u00bb (Plantes indig\u00e8nes appliqu\u00e9es et conservation des pollinisateurs)<\/a>. Merci \u00e0 la Dr. Emily Austen et aux \u00e9tudiants pour cette collaboration continue !<\/strong><\/p>\n\n\n\n

Par Paige Stuart, \u00e9tudiante \u00e0 l’Universit\u00e9 Mount Allison<\/p>\n\n\n\n

L’Immortelle blanche (Anaphalis margaritacea) <\/em>est un excellent ajout \u00e0 tout jardin r\u00e9sidentiel. Ces plantes attrayantes et faciles d’entretien encouragent les pollinisateurs \u00e0 visiter votre cour, ce qui profite \u00e0 la fois \u00e0 votre jardin dans son ensemble et \u00e0 l’\u00e9cosyst\u00e8me.<\/strong><\/p>\n\n\n\n

L’Immortelle est une plante vivace rustique que l’on trouve partout aux \u00c9tats-Unis et au Canada, son aire de r\u00e9partition naturelle s’\u00e9tendant vers le nord jusqu’au Nouveau-Brunswick et aux provinces maritimes environnantes. Elle pousse dans divers habitats et est particuli\u00e8rement adapt\u00e9e aux sites secs et rocailleux, comme les prairies, les bords de route et les for\u00eats. Elle pr\u00e9f\u00e8re les sols secs, rocheux ou riches en argile et se d\u00e9veloppe bien au soleil ou \u00e0 mi-ombre.<\/p>\n\n\n\n

Ces caract\u00e9ristiques font de l’Immortelle blanche un excellent choix pour les emplacements moins propices dans les jardins, comme les jardins de rocaille et les sols peu fertiles. Vraiment, partout o\u00f9 vos autres plantes ne peuvent pas prosp\u00e9rer. L’Immortelle n\u00e9cessite peu d’eau, ce qui la rend tr\u00e8s r\u00e9sistante \u00e0 la s\u00e9cheresse. L’ajout de cette plante \u00e0 votre jardin pr\u00e9sente plusieurs avantages, notamment un attrait visuel et une pr\u00e9sence accrue de pollinisateurs.<\/p>\n\n\n\n

Les graines peuvent \u00eatre sem\u00e9es directement \u00e0 la surface du sol \u00e0 la fin de l’automne pour germer au printemps. Les plantes fleurissent pendant l’\u00e9t\u00e9, produisant de petites fleurs blanc nacr\u00e9 avec un disque jaune au centre. Elles peuvent atteindre jusqu’\u00e0 un m\u00e8tre de haut, avec des tiges cotonneuses qui se regroupent, donnant \u00e0 la plante un aspect buissonnant.<\/p>\n\n\n\n

La plante poss\u00e8de \u00e9galement des propri\u00e9t\u00e9s m\u00e9dicinales et est utilis\u00e9e depuis des mill\u00e9naires par les communaut\u00e9s autochtones. Elle \u00e9tait traditionnellement utilis\u00e9e pour soigner les plaies, bouillie dans des tisanes pour soulager les rhumatismes ou fum\u00e9e pour soulager les rhumes.<\/p>\n\n\n\n

L’Immortelle blanche est pollinis\u00e9e par les insectes et fournit du nectar aux papillons de jour et de nuit. Les papillons comme la Vanesse des perli\u00e8res (Vanessa virginiensis<\/em>) et la Belle-Dame (Vanessa cardui<\/em>) ont une relation particuli\u00e8re avec cette plante, car elle sert d’h\u00f4te \u00e0 leurs larves. Ces papillons migrent vers le sud pendant les mois les plus froids et reviennent dans les Maritimes lorsque le temps se r\u00e9chauffe. \u00c0 leur retour, ils se nourrissent des feuilles de la plante et pondent leurs \u0153ufs au printemps. Les chenilles des papillons cr\u00e9ent alors des toiles autour d’elles et grandissent en consommant la mati\u00e8re v\u00e9g\u00e9tale. Sans l’Immortelle, le cycle de vie de ces vanesses serait perturb\u00e9.<\/p>\n\n\n\n

Les relations entre les plantes indig\u00e8nes et les pollinisateurs sont extr\u00eamement sensibles aux changements environnementaux, car elles ont besoin d’habitats adapt\u00e9s pour soutenir leurs populations. Planter des esp\u00e8ces comme l’Immortelle blanche est un moyen facile de soutenir les papillons. De plus, cultiver des plantes qui n\u00e9cessitent peu de ressources r\u00e9duit l’impact environnemental des jardins d’arri\u00e8re-cour, notamment en termes de consommation d’eau.<\/p>\n\n\n\n

Planter des plantes comme l’Immortelle est un moyen facile et efficace de soutenir les populations de pollinisateurs au Nouveau-Brunswick. Les jardins ext\u00e9rieurs ne peuvent que b\u00e9n\u00e9ficier de ces plantes r\u00e9sistantes et faciles d’entretien.<\/p>\n\n\n\n

\n
Devenir membre du club Gardien\u00b7nes des semences<\/a><\/div>\n\n\n\n
David Suzuki Seed Sitters<\/a><\/div>\n\n\n\n
Ottawa Wildflower Seed Library Catalogue – Pearly Everlasting<\/a><\/div>\n\n\n\n
Network of Nature – Pearly Everlasting<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

L’Immortelle blanche (Anaphalis margaritacea) est un excellent ajout \u00e0 tout jardin r\u00e9sidentiel. Ces plantes attrayantes et faciles d’entretien encouragent les pollinisateurs \u00e0 visiter votre cour, ce qui profite \u00e0 la fois \u00e0 votre jardin dans son ensemble et \u00e0 l’\u00e9cosyst\u00e8me.<\/p>\n","protected":false},"author":2,"featured_media":21404,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[814],"tags":[723,697,775,696,773],"class_list":["post-21413","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article-invite","tag-club-gardiens-des-semences","tag-gardiens-des-semences","tag-mount-allison-2","tag-plantes-indigenes","tag-pollinisateurs"],"acf":[],"yoast_head":"\nPourquoi cultiver l'Immortelle blanche? - Nature NB<\/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:\/\/www.naturenb.ca\/fr\/pourquoi-cultiver-limmortelle-blanche\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pourquoi cultiver l'Immortelle blanche? - Nature NB\" \/>\n<meta property=\"og:description\" content=\"L'Immortelle blanche (Anaphalis margaritacea) est un excellent ajout \u00e0 tout jardin r\u00e9sidentiel. 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