{"date":"0001-01-01T00:00:00Z","lastmod":"2026-05-31T22:27:37Z","params":{"aliases":["/plantes/hellebore-noir/","/plantes/hellébore-noir/","/plantes/helleborus-niger/"],"author":"Sophie","categories":["Vivaces"],"climate":{"compatibility":{"continental":{"label":"excellente rusticité, installer en sol vivant pour une reprise durable","score":4},"mediterranean":{"label":"possible en ombre claire avec arrosages de soutien","score":2},"mountain":{"label":"très bon comportement au froid, floraison parfois décalée","score":4},"oceanic":{"label":"très favorable si le drainage hivernal est correct","score":5},"tropical":{"label":"chaleur humide continue peu adaptée","score":1}},"hardiness":{"max_c":25,"min_c":-20},"usda":{"max":"8","min":"4"}},"complexity":{"global_score":2,"profile":{"beginner_friendly":true,"container_friendly":true,"indoor_friendly":false}},"description":"Guide pratique pour réussir la rose de Noël : exposition, sol, arrosage, culture en pot, entretien et prévention des problèmes fréquents.","dimensions":{"height_cm":{"max":40,"min":20},"spread_cm":{"max":45,"min":30}},"draft":false,"environment":{"drainage":{"importance":"high","value":"drainé, sans stagnation hivernale"},"exposure":{"importance":"high","tolerance_score":3,"value":"mi-ombre lumineuse à soleil doux d'hiver"},"ph":{"max":7.8,"min":6.5},"soil":{"importance":"high","type":"humifère, souple, fertile et drainé"},"soil_texture":["limoneux","humifère","argilo-limoneux amendé"]},"families":["Ranunculaceae"],"ideal_conditions":{"drainage":{"importance":"high","value":"écoulement net de l'eau autour du collet"},"exposure":{"importance":"high","value":"lumière tamisée, sans soleil brûlant l'après-midi"},"ph":{"max":7.8,"min":6.5},"soil":{"importance":"high","value":"terre riche en matière organique, fraîche en hiver-printemps"},"spacing_cm":40,"temperature":{"importance":"high","max_c":20,"min_c":-10},"watering":{"frequency":"régulier à l'installation puis ponctuel en été sec","importance":"high"}},"image":"rose-de-noel.jpg","iscjklanguage":false,"jsonld":{"enabled":true,"type":"Taxon"},"lastmod":"2026-05-31T22:27:37Z","lifecycle":{"bloom_months":["décembre","janvier","février","mars"],"planting_months":["septembre","octobre","novembre","février","mars"],"pruning_months":["janvier","février","mars"]},"outputs":["HTML","JSON"],"plant":{"aliases":["Hellébore noir","Ellébore noir"],"common_name":"Rose de Noël","family":"Ranunculaceae","genus":"Helleborus","growth_rate":{"score":2,"value":"lente à moyenne"},"lifecycle":"vivace","origin":"Europe centrale et méridionale (zones alpines)","scientific_name":"Helleborus niger","species":"niger","type":"vivace persistante ornementale"},"risks":{"toxicity":{"severity_score":3,"value":"plante toxique à l'ingestion; sève potentiellement irritante"}},"seo":{"content_depth":"expert","difficulty_score":2,"keywords":["rose de Noël","Helleborus niger","hellébore noir","entretien rose de Noël","rose de Noël en pot","planter rose de Noël"]},"slug":"rose-de-noel","summary":"La rose de Noël (Helleborus niger) fleurit en hiver dans une terre humifère et drainée, à mi-ombre lumineuse, avec un arrosage modéré et un entretien léger.","tags":["floraison hivernale","mi-ombre","sol humifère"],"title":"Rose de Noël (Helleborus niger) : plantation, entretien et floraison hivernale","type":"plant","uses":{"ecological":true,"edible":false,"medicinal":false,"ornamental":true},"water":{"drought_tolerance":{"score":2},"frequency":{"summer":"arrosez en période sèche, surtout les deux premières années et en pot","winter":"apports faibles en pleine terre; priorité au drainage"},"humidity":{"importance":"medium","value":"moyenne"},"needs":{"importance":"high","score":3,"value":"modérés"}}},"permalink":"https://plantes-de-jardin-gb.pages.dev/fr/plantes/rose-de-noel/","relPermalink":"/fr/plantes/rose-de-noel/","slug":"rose-de-noel","title":"Rose de Noël (Helleborus niger) : plantation, entretien et floraison hivernale"}