{"date":"0001-01-01T00:00:00Z","lastmod":"2026-05-31T22:27:37Z","params":{"author":"Sophie","categories":["Vivaces"],"climate":{"compatibility":{"continental":{"label":"possible avec forte protection hivernale de la souche","score":2},"mediterranean":{"label":"réussit seulement en zone fraîche et arrosée","score":2},"mountain":{"label":"délicate hors emplacement très abrité","score":1},"oceanic":{"label":"très adaptée en sol profond et frais","score":5},"tropical":{"label":"possible avec sol riche et humidité régulière","score":3}},"hardiness":{"max_c":32,"min_c":-8},"usda":{"max":"10","min":"8"}},"complexity":{"global_score":3,"profile":{"beginner_friendly":false,"container_friendly":false,"indoor_friendly":false}},"description":"Guide pratique pour réussir la gunnera au jardin : emplacement humide, plantation, arrosage, entretien, rusticité et protection en hiver.","dimensions":{"height_cm":{"max":250,"min":150},"spread_cm":{"max":350,"min":200}},"draft":false,"environment":{"drainage":{"importance":"high","value":"drainé mais restant humide en saison"},"exposure":{"importance":"high","tolerance_score":3,"value":"soleil doux à mi-ombre"},"ph":{"max":7.2,"min":5.8},"soil":{"importance":"high","type":"riche, humifère, profond et frais"},"soil_texture":["limoneux","limono-argileux","terre humifère"]},"families":["Gunneraceae"],"ideal_conditions":{"drainage":{"importance":"high","value":"sol frais en continu mais non gorgé d'eau froide l'hiver"},"exposure":{"importance":"high","value":"lumière abondante sans soleil brûlant de l'après-midi"},"ph":{"max":7,"min":6},"soil":{"importance":"high","value":"terre enrichie en matière organique et paillée"},"spacing_cm":250,"temperature":{"importance":"high","max_c":24,"min_c":10},"watering":{"frequency":"soutenu au printemps-été, modéré en hiver","importance":"high"}},"image":"gunnera.jpg","iscjklanguage":false,"jsonld":{"enabled":true,"type":"Taxon"},"lastmod":"2026-05-31T22:27:37Z","lifecycle":{"bloom_months":["juin","juillet"],"planting_months":["mars","avril","mai","septembre"],"pruning_months":["février","mars"]},"outputs":["HTML","JSON"],"plant":{"common_name":"Gunnera","family":"Gunneraceae","genus":"Gunnera","growth_rate":{"score":3,"value":"moyenne à rapide"},"lifecycle":"vivace caduque","origin":"Sud du Brésil","scientific_name":"Gunnera manicata","species":"manicata","type":"vivace rhizomateuse géante"},"risks":{"toxicity":{"severity_score":1,"value":"non réputée toxique au jardin, mais feuillage rugueux pouvant irriter les peaux sensibles"}},"seo":{"content_depth":"expert","difficulty_score":3,"keywords":["gunnera","Gunnera manicata","rhubarbe géante","planter gunnera","entretien gunnera","gunnera rusticité"]},"slug":"gunnera","summary":"La gunnera, souvent appelée rhubarbe géante, demande surtout un sol riche et frais en permanence. Elle devient spectaculaire si l'humidité est régulière et si la souche est protégée des gels marqués.","tags":["sol frais","mi-ombre","feuillage géant"],"title":"Gunnera (Gunnera manicata) : plantation, entretien et protection hivernale","type":"plant","uses":{"ecological":true,"edible":false,"medicinal":false,"ornamental":true},"water":{"drought_tolerance":{"score":1},"frequency":{"summer":"arrosez très régulièrement pour garder une terre fraîche en profondeur, surtout les 2 premières années","winter":"réduisez fortement les apports, sans laisser la souche dans une eau stagnante froide"},"humidity":{"importance":"high","value":"élevée"},"needs":{"importance":"high","score":4,"value":"élevés"}}},"permalink":"https://plantes-de-jardin-gb.pages.dev/fr/plantes/gunnera/","relPermalink":"/fr/plantes/gunnera/","slug":"gunnera","title":"Gunnera (Gunnera manicata) : plantation, entretien et protection hivernale"}