{"id":48181,"date":"2016-12-12T15:18:33","date_gmt":"2016-12-12T20:18:33","guid":{"rendered":"https:\/\/www.lasocietedesplantes.com\/p\/centauree-noire\/"},"modified":"2026-06-29T12:19:36","modified_gmt":"2026-06-29T16:19:36","slug":"black-centaur","status":"publish","type":"product","link":"https:\/\/www.lasocietedesplantes.com\/en\/produits\/centauree-noire\/","title":{"rendered":"organic black knapweed"},"content":{"rendered":"

Press seeds onto the surface of moist potting soil (no more than 2 mm deep) and store at 15\u00b0C-20\u00b0C until germination, which will take up to 15 days. Transplant the seedlings into individual 8 cm pots and, when well rooted, transplant at a minimum of 15 cm between plants.<\/p>\n

\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Centaurea nigra, Asteraceae<\/strong><\/p>\n

hardheads, black knapweed<\/p>\n

Black knapweed is both food for bees and a beautiful flower to cut. This potentially invasive species is of European origin, naturalized in Quebec. It is a hardy perennial in zone 3, with erect stems that are covered with purplish-red flowers above fat, hairy involucres, from July to September. 30-75 cm tall.<\/p>\n

70-80 seeds<\/p>\n

Seeds certified organic by Qu\u00e9bec Vrai,<\/a>produced here at LA SOCI\u00c9T\u00c9 DES PLANTES, Kamouraska, Qc<\/p>","protected":false},"featured_media":48182,"template":"","meta":[],"product_brand":[],"product_cat":[999,186,904,187,332],"product_tag":[194,216,225,191,231,180,415,298,198,414],"class_list":["post-48181","product","type-product","status-publish","has-post-thumbnail","product_cat-centauree","product_cat-ornementales","product_cat-ornementales-vivaces-et-bisannuelles","product_cat-plantes-a-fleurs","product_cat-semences-biologique","product_tag-asteracees","product_tag-bleuviolet","product_tag-fleurs-comestibles","product_tag-permaculture","product_tag-pollinisateurs","product_tag-rouge-pourpre","product_tag-rustique","product_tag-se-resseme","product_tag-vivace","product_tag-rustique-en-zone-3","sales-flash-overlay","woocommerce-text-align-center","woocommerce-image-align-center","do-quantity-buttons","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"booking_location":null,"booking_location_type":null,"booking_duration":null,"booking_duration_unit":null,"booking_buffer":null,"booking_cost":null,"booking_resources":null,"yoast_head":"\ncentaur\u00e9e noire bio - LA SOCI\u00c9T\u00c9 DES PLANTES<\/title>\n<meta name=\"description\" content=\"Centaurea nigra, Ast\u00e9rac\u00e9es. La centaur\u00e9e noire, c'est de la nourriture pour les abeilles doubl\u00e9e d\u2019une belle fleur \u00e0 couper. L'esp\u00e8ce potentiellement envahissante est d'origine europ\u00e9enne, naturalis\u00e9e au Qu\u00e9bec. C'est une plante vivace rustique en zone 3, aux tiges \u00e9rig\u00e9es qui se couvrent de fleurs rouge violac\u00e9 au dessus d\u2019involucres gras et poilus, de juillet \u00e0 septembre. 30-75 cm.\" \/>\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.lasocietedesplantes.com\/en\/products\/black-centaur\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"centaur\u00e9e noire bio - LA SOCI\u00c9T\u00c9 DES PLANTES\" \/>\n<meta property=\"og:description\" content=\"Centaurea nigra, Ast\u00e9rac\u00e9es. La centaur\u00e9e noire, c'est de la nourriture pour les abeilles doubl\u00e9e d\u2019une belle fleur \u00e0 couper. L'esp\u00e8ce potentiellement envahissante est d'origine europ\u00e9enne, naturalis\u00e9e au Qu\u00e9bec. C'est une plante vivace rustique en zone 3, aux tiges \u00e9rig\u00e9es qui se couvrent de fleurs rouge violac\u00e9 au dessus d\u2019involucres gras et poilus, de juillet \u00e0 septembre. 30-75 cm.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.lasocietedesplantes.com\/en\/products\/black-centaur\/\" \/>\n<meta property=\"og:site_name\" content=\"LA SOCI\u00c9T\u00c9 DES PLANTES\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/LA-SOCI%c3%89T%c3%89-DES-PLANTES-100844866638607\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-29T16:19:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.lasocietedesplantes.com\/wp-content\/uploads\/2022\/05\/CentaureaNigra-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"700\" \/>\n\t<meta property=\"og:image:height\" content=\"904\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/produits\\\/centauree-noire\\\/\",\"url\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/produits\\\/centauree-noire\\\/\",\"name\":\"centaur\u00e9e noire bio - LA SOCI\u00c9T\u00c9 DES PLANTES\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/produits\\\/centauree-noire\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/produits\\\/centauree-noire\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/wp-content\\\/uploads\\\/2022\\\/05\\\/CentaureaNigra-1.jpg\",\"datePublished\":\"2016-12-12T20:18:33+00:00\",\"dateModified\":\"2026-06-29T16:19:36+00:00\",\"description\":\"Centaurea nigra, Ast\u00e9rac\u00e9es. La centaur\u00e9e noire, c'est de la nourriture pour les abeilles doubl\u00e9e d\u2019une belle fleur \u00e0 couper. L'esp\u00e8ce potentiellement envahissante est d'origine europ\u00e9enne, naturalis\u00e9e au Qu\u00e9bec. C'est une plante vivace rustique en zone 3, aux tiges \u00e9rig\u00e9es qui se couvrent de fleurs rouge violac\u00e9 au dessus d\u2019involucres gras et poilus, de juillet \u00e0 septembre. 30-75 cm.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/produits\\\/centauree-noire\\\/#breadcrumb\"},\"inLanguage\":\"en-CA\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.lasocietedesplantes.com\\\/produits\\\/centauree-noire\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-CA\",\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/produits\\\/centauree-noire\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/wp-content\\\/uploads\\\/2022\\\/05\\\/CentaureaNigra-1.jpg\",\"contentUrl\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/wp-content\\\/uploads\\\/2022\\\/05\\\/CentaureaNigra-1.jpg\",\"width\":700,\"height\":904,\"caption\":\"Centaur\u00e9e noire\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/produits\\\/centauree-noire\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Produits\",\"item\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"centaur\u00e9e noire bio\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/#website\",\"url\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/\",\"name\":\"LA SOCI\u00c9T\u00c9 DES PLANTES\",\"description\":\"Semences de vari\u00e9t\u00e9s utiles et agr\u00e9ables\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-CA\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/#organization\",\"name\":\"La soci\u00e9t\u00e9 des plantes\",\"url\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-CA\",\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/wp-content\\\/uploads\\\/2022\\\/02\\\/la-societe-des-plantes-logo-mobile.png\",\"contentUrl\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/wp-content\\\/uploads\\\/2022\\\/02\\\/la-societe-des-plantes-logo-mobile.png\",\"width\":800,\"height\":313,\"caption\":\"La soci\u00e9t\u00e9 des plantes\"},\"image\":{\"@id\":\"https:\\\/\\\/www.lasocietedesplantes.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/LA-SOCI\u00c9T\u00c9-DES-PLANTES-100844866638607\\\/\",\"https:\\\/\\\/www.instagram.com\\\/la_societe_des_plantes\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"organic black knapweed - LA SOCI\u00c9T\u00c9 DES PLANTES","description":"Centaurea nigra, Asteraceae. Black knapweed is food for bees and a beautiful flower to cut. This potentially invasive species is of European origin, naturalized in Quebec. It is a hardy perennial in zone 3, with erect stems that are covered with purplish-red flowers above fat, hairy involucres, from July to September. 30-75 cm tall.","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:\/\/www.lasocietedesplantes.com\/en\/products\/black-centaur\/","og_locale":"en_US","og_type":"article","og_title":"centaur\u00e9e noire bio - LA SOCI\u00c9T\u00c9 DES PLANTES","og_description":"Centaurea nigra, Ast\u00e9rac\u00e9es. La centaur\u00e9e noire, c'est de la nourriture pour les abeilles doubl\u00e9e d\u2019une belle fleur \u00e0 couper. L'esp\u00e8ce potentiellement envahissante est d'origine europ\u00e9enne, naturalis\u00e9e au Qu\u00e9bec. C'est une plante vivace rustique en zone 3, aux tiges \u00e9rig\u00e9es qui se couvrent de fleurs rouge violac\u00e9 au dessus d\u2019involucres gras et poilus, de juillet \u00e0 septembre. 30-75 cm.","og_url":"https:\/\/www.lasocietedesplantes.com\/en\/products\/black-centaur\/","og_site_name":"LA SOCI\u00c9T\u00c9 DES PLANTES","article_publisher":"https:\/\/www.facebook.com\/LA-SOCI%c3%89T%c3%89-DES-PLANTES-100844866638607\/","article_modified_time":"2026-06-29T16:19:36+00:00","og_image":[{"width":700,"height":904,"url":"https:\/\/www.lasocietedesplantes.com\/wp-content\/uploads\/2022\/05\/CentaureaNigra-1.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.lasocietedesplantes.com\/produits\/centauree-noire\/","url":"https:\/\/www.lasocietedesplantes.com\/produits\/centauree-noire\/","name":"organic black knapweed - LA SOCI\u00c9T\u00c9 DES PLANTES","isPartOf":{"@id":"https:\/\/www.lasocietedesplantes.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.lasocietedesplantes.com\/produits\/centauree-noire\/#primaryimage"},"image":{"@id":"https:\/\/www.lasocietedesplantes.com\/produits\/centauree-noire\/#primaryimage"},"thumbnailUrl":"https:\/\/www.lasocietedesplantes.com\/wp-content\/uploads\/2022\/05\/CentaureaNigra-1.jpg","datePublished":"2016-12-12T20:18:33+00:00","dateModified":"2026-06-29T16:19:36+00:00","description":"Centaurea nigra, Asteraceae. Black knapweed is food for bees and a beautiful flower to cut. This potentially invasive species is of European origin, naturalized in Quebec. It is a hardy perennial in zone 3, with erect stems that are covered with purplish-red flowers above fat, hairy involucres, from July to September. 30-75 cm tall.","breadcrumb":{"@id":"https:\/\/www.lasocietedesplantes.com\/produits\/centauree-noire\/#breadcrumb"},"inLanguage":"en-CA","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.lasocietedesplantes.com\/produits\/centauree-noire\/"]}]},{"@type":"ImageObject","inLanguage":"en-CA","@id":"https:\/\/www.lasocietedesplantes.com\/produits\/centauree-noire\/#primaryimage","url":"https:\/\/www.lasocietedesplantes.com\/wp-content\/uploads\/2022\/05\/CentaureaNigra-1.jpg","contentUrl":"https:\/\/www.lasocietedesplantes.com\/wp-content\/uploads\/2022\/05\/CentaureaNigra-1.jpg","width":700,"height":904,"caption":"Centaur\u00e9e noire"},{"@type":"BreadcrumbList","@id":"https:\/\/www.lasocietedesplantes.com\/produits\/centauree-noire\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.lasocietedesplantes.com\/"},{"@type":"ListItem","position":2,"name":"Produits","item":"https:\/\/www.lasocietedesplantes.com\/shop\/"},{"@type":"ListItem","position":3,"name":"centaur\u00e9e noire bio"}]},{"@type":"WebSite","@id":"https:\/\/www.lasocietedesplantes.com\/#website","url":"https:\/\/www.lasocietedesplantes.com\/","name":"THE PLANT COMPANY","description":"Seeds of useful and pleasant varieties","publisher":{"@id":"https:\/\/www.lasocietedesplantes.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.lasocietedesplantes.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-CA"},{"@type":"Organization","@id":"https:\/\/www.lasocietedesplantes.com\/#organization","name":"The plant company","url":"https:\/\/www.lasocietedesplantes.com\/","logo":{"@type":"ImageObject","inLanguage":"en-CA","@id":"https:\/\/www.lasocietedesplantes.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.lasocietedesplantes.com\/wp-content\/uploads\/2022\/02\/la-societe-des-plantes-logo-mobile.png","contentUrl":"https:\/\/www.lasocietedesplantes.com\/wp-content\/uploads\/2022\/02\/la-societe-des-plantes-logo-mobile.png","width":800,"height":313,"caption":"La soci\u00e9t\u00e9 des plantes"},"image":{"@id":"https:\/\/www.lasocietedesplantes.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/LA-SOCI\u00c9T\u00c9-DES-PLANTES-100844866638607\/","https:\/\/www.instagram.com\/la_societe_des_plantes\/"]}]}},"_links":{"self":[{"href":"https:\/\/www.lasocietedesplantes.com\/en\/wp-json\/wp\/v2\/product\/48181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lasocietedesplantes.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.lasocietedesplantes.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lasocietedesplantes.com\/en\/wp-json\/wp\/v2\/media\/48182"}],"wp:attachment":[{"href":"https:\/\/www.lasocietedesplantes.com\/en\/wp-json\/wp\/v2\/media?parent=48181"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.lasocietedesplantes.com\/en\/wp-json\/wp\/v2\/product_brand?post=48181"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.lasocietedesplantes.com\/en\/wp-json\/wp\/v2\/product_cat?post=48181"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.lasocietedesplantes.com\/en\/wp-json\/wp\/v2\/product_tag?post=48181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}