{"id":139267,"date":"2026-04-16T15:01:47","date_gmt":"2026-04-16T15:01:47","guid":{"rendered":"https:\/\/www.amsterdamgenetics.com\/cannabis-seedling-first-week-light-water-led-lamp\/"},"modified":"2026-04-22T15:29:58","modified_gmt":"2026-04-22T15:29:58","slug":"semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led","status":"publish","type":"post","link":"https:\/\/www.amsterdamgenetics.com\/fr\/semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led\/","title":{"rendered":"La premi\u00e8re semaine de votre plantule : lumi\u00e8re, eau et distance \u00e0 votre lampe LED"},"content":{"rendered":"[vc_row type=\u00a0\u00bbin_container\u00a0\u00bb full_screen_row_position=\u00a0\u00bbmiddle\u00a0\u00bb column_margin=\u00a0\u00bbdefault\u00a0\u00bb column_direction=\u00a0\u00bbdefault\u00a0\u00bb column_direction_tablet=\u00a0\u00bbdefault\u00a0\u00bb column_direction_phone=\u00a0\u00bbdefault\u00a0\u00bb scene_position=\u00a0\u00bbcenter\u00a0\u00bb text_color=\u00a0\u00bbdark\u00a0\u00bb text_align=\u00a0\u00bbleft\u00a0\u00bb row_border_radius=\u00a0\u00bbnone\u00a0\u00bb row_border_radius_applies=\u00a0\u00bbbg\u00a0\u00bb row_position_desktop=\u00a0\u00bbdefault\u00a0\u00bb row_position_tablet=\u00a0\u00bbinherit\u00a0\u00bb row_position_phone=\u00a0\u00bbinherit\u00a0\u00bb overflow=\u00a0\u00bbvisible\u00a0\u00bb class=\u00a0\u00bbblog-container\u00a0\u00bb overlay_strength=\u00a0\u00bb0.3&Prime; 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width=\u00a0\u00bb1\/1&Prime; tablet_width_inherit=\u00a0\u00bbdefault\u00a0\u00bb animation_type=\u00a0\u00bbdefault\u00a0\u00bb bg_image_animation=\u00a0\u00bbnone\u00a0\u00bb border_type=\u00a0\u00bbsimple\u00a0\u00bb column_border_width=\u00a0\u00bbnone\u00a0\u00bb column_border_style=\u00a0\u00bbsolid\u00a0\u00bb][vc_raw_html]JTVCc2MlMjBuYW1lJTNEJTIyZmVhdHVyZWQtaW1hZ2UlMjIlNUQlNUIlMkZzYyU1RA==[\/vc_raw_html][vc_custom_heading source=\u00a0\u00bbpost_title\u00a0\u00bb font_container=\u00a0\u00bbtag:h1|text_align:left|color:%234d3935&Prime; use_theme_fonts=\u00a0\u00bbyes\u00a0\u00bb][vc_raw_html]JTVCc2MlMjBuYW1lJTNEJTIycG9zdC1kYXRlJTIyJTVEJTVCJTJGc2MlNUQ=[\/vc_raw_html][vc_column_text text_direction=\u00a0\u00bbdefault\u00a0\u00bb]<h4 class=\"toc-nl\">Inhoudsopave<\/h4>\r\n<h4 class=\"toc-en\">Table of contents<\/h4>\r\n<h4 class=\"toc-fr\">Table des mati\u00e8res<\/h4>\r\n<h4 class=\"toc-es\">\u00cdndice<\/h4>\r\n<h4 class=\"toc-de\">Inhalts\u00fcbersicht<\/h4>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-flat ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.amsterdamgenetics.com\/fr\/semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led\/#Ce_que_vous_observerez_durant_la_premiere_semaine\" >Ce que vous observerez durant la premi\u00e8re semaine<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.amsterdamgenetics.com\/fr\/semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led\/#Prendre_soin_de_votre_plantule_dune_semaine\" >Prendre soin de votre plantule d\u2019une semaine<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.amsterdamgenetics.com\/fr\/semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led\/#Rempotage_de_la_plantule\" >Rempotage de la plantule<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.amsterdamgenetics.com\/fr\/semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led\/#Creer_le_bon_climat\" >Cr\u00e9er le bon climat<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.amsterdamgenetics.com\/fr\/semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led\/#Les_meilleures_pratiques_declairage\" >Les meilleures pratiques d\u2019\u00e9clairage<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.amsterdamgenetics.com\/fr\/semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led\/#Arrosage_de_votre_plantule\" >Arrosage de votre plantule<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.amsterdamgenetics.com\/fr\/semis-de-cannabis-premiere-semaine-lumiere-arrosage-lampe-led\/#Signes_dune_plantule_en_mauvaise_sante\" >Signes d\u2019une plantule en mauvaise sant\u00e9<\/a><\/li><\/ul><\/nav><\/div>\n[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb text_direction=\u00a0\u00bbdefault\u00a0\u00bb]\n<p class=\"s4\"><strong>Cela fait officiellement une semaine que votre graine a germ\u00e9 ! Vous \u00eates d\u00e9sormais dans la phase de plantule, et votre jeune plante est en bonne voie pour devenir un plant de cannabis sain. Les soins apport\u00e9s durant cette premi\u00e8re semaine sont essentiels. C\u2019est une phase d\u00e9licate durant laquelle la plantule explore son environnement pour trouver des nutriments et des ressources. Un exc\u00e8s ou un manque peut rapidement entra\u00eener sa disparition avant m\u00eame qu\u2019elle ne commence r\u00e9ellement \u00e0 pousser. Trouver le bon \u00e9quilibre vous permettra de faire passer votre plantule d\u2019un \u00e9tat autonome \u00e0 un environnement optimis\u00e9 pour sa croissance. Voici \u00e0 quoi vous attendre durant cette premi\u00e8re semaine et comment bien en prendre soin.<\/strong><\/p>\n<h2 data-section-id=\"1x1wdi3\" data-start=\"816\" data-end=\"868\"><span class=\"ez-toc-section\" id=\"Ce_que_vous_observerez_durant_la_premiere_semaine\"><\/span>Ce que vous observerez durant la premi\u00e8re semaine<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"870\" data-end=\"1331\">La <a href=\"https:\/\/www.amsterdamgenetics.com\/fr\/?p=110035\">phase de plantule<\/a> est la deuxi\u00e8me \u00e9tape du cycle de croissance. Elle est pr\u00e9c\u00e9d\u00e9e par la germination, qui peut durer jusqu\u2019\u00e0 10 jours. Au moment o\u00f9 vous vous occupez de votre plantule, vous \u00eates donc d\u00e9j\u00e0 engag\u00e9 dans votre culture depuis au moins une semaine. Cette phase dure g\u00e9n\u00e9ralement 1 \u00e0 2 semaines. Il est crucial d\u2019y \u00e9tablir de bonnes pratiques et un environnement adapt\u00e9, car cela influencera directement la r\u00e9ussite de la phase v\u00e9g\u00e9tative suivante.<\/p>\n<p data-start=\"1333\" data-end=\"1527\">Comment savoir si votre graine est devenue une plantule ? Vous verrez appara\u00eetre la plante elle-m\u00eame, et certains signes visuels vous permettront de v\u00e9rifier sa bonne sant\u00e9. Une plantule saine :<\/p>\n<ul data-start=\"1529\" data-end=\"1689\">\n<li data-section-id=\"bm3wgt\" data-start=\"1529\" data-end=\"1580\">Mesure quelques centim\u00e8tres et sort de la terre<\/li>\n<li data-section-id=\"kjvd4v\" data-start=\"1581\" data-end=\"1616\">Pr\u00e9sente une couleur verte vive<\/li>\n<li data-section-id=\"19ek3pj\" data-start=\"1617\" data-end=\"1644\">Poss\u00e8de une tige solide<\/li>\n<li data-section-id=\"17whwcg\" data-start=\"1645\" data-end=\"1689\">Montre des cotyl\u00e9dons (premi\u00e8res feuilles)<\/li>\n<\/ul>\n<p data-start=\"1691\" data-end=\"2031\">Au d\u00e9but, il est possible que la coque de la graine soit encore attach\u00e9e au sommet. Progressivement, les premi\u00e8res vraies feuilles appara\u00eetront. Si vous cultivez des vari\u00e9t\u00e9s autoflorissantes comme <a href=\"https:\/\/www.amsterdamgenetics.com\/fr\/product\/white-choco-autoflorissantes\/\">White Choco Autoflower<\/a> ou <a href=\"https:\/\/www.amsterdamgenetics.com\/fr\/product\/exotic-purple-autoflorissantes\/\">Exotic Purple Autoflower<\/a>, la croissance peut \u00eatre plus rapide et les premi\u00e8res feuilles peuvent appara\u00eetre plus t\u00f4t.<\/p>\n<h2 class=\"s5\"><span class=\"s2\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-106567\" src=\"https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/q2_in_soil_amsterdam_genetics_Tekengebied-1-kopie-4.jpg\" alt=\"\" width=\"1000\" height=\"450\" srcset=\"https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/q2_in_soil_amsterdam_genetics_Tekengebied-1-kopie-4.jpg 1000w, https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/q2_in_soil_amsterdam_genetics_Tekengebied-1-kopie-4-300x135.jpg 300w, https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/q2_in_soil_amsterdam_genetics_Tekengebied-1-kopie-4-768x346.jpg 768w, https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/q2_in_soil_amsterdam_genetics_Tekengebied-1-kopie-4-750x338.jpg 750w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/span><\/h2>\n<h2 data-section-id=\"pxpsxr\" data-start=\"2033\" data-end=\"2080\"><span class=\"ez-toc-section\" id=\"Prendre_soin_de_votre_plantule_dune_semaine\"><\/span>Prendre soin de votre plantule d\u2019une semaine<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"2082\" data-end=\"2394\">Maintenant que vous savez \u00e0 quoi ressemble votre jeune plante, il est temps de lui apporter les bons soins. Traitez votre plant de cannabis comme un nouveau-n\u00e9 : fragile, d\u00e9pendant et tr\u00e8s sensible \u00e0 son environnement. Le cultivateur doit ma\u00eetriser \u00e0 la fois les conditions de culture et les apports \u00e0 la plante.<\/p>\n<h3 data-section-id=\"6ket0j\" data-start=\"2396\" data-end=\"2424\"><span class=\"ez-toc-section\" id=\"Rempotage_de_la_plantule\"><\/span>Rempotage de la plantule<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2426\" data-end=\"2849\">Les racines commencent \u00e0 se d\u00e9velopper durant cette phase. \u00c0 ce stade, votre plantule doit d\u00e9j\u00e0 \u00eatre plac\u00e9e dans un substrat adapt\u00e9 \u2014 comme des plugs de germination ou un petit pot s\u00e9par\u00e9 du pot final. Pour les graines autoflorissantes, la croissance rapide des racines rend souvent pr\u00e9f\u00e9rable une mise directe dans le pot final, m\u00eame apr\u00e8s une semaine. Cela offre plus d\u2019espace pour soutenir le d\u00e9veloppement de la plante.<\/p>\n<h3 data-section-id=\"1imddod\" data-start=\"2851\" data-end=\"2874\"><span class=\"ez-toc-section\" id=\"Creer_le_bon_climat\"><\/span>Cr\u00e9er le bon climat<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2876\" data-end=\"3183\">Les plantules appr\u00e9cient un climat chaud et humide, autour de 20 \u00e0 25\u00b0C. C\u2019est l\u00e9g\u00e8rement plus frais que durant la germination, donc pr\u00e9voyez de baisser un peu la temp\u00e9rature d\u00e8s l\u2019apparition de la plantule. L\u2019humidit\u00e9 doit se situer entre 60 % et 70 % pour maintenir un bon \u00e9quilibre entre l\u2019air et le sol.<\/p>\n<h3 data-section-id=\"1wmdaef\" data-start=\"3185\" data-end=\"3225\"><span class=\"ez-toc-section\" id=\"Les_meilleures_pratiques_declairage\"><\/span>Les meilleures pratiques d\u2019\u00e9clairage<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3227\" data-end=\"3337\">La lumi\u00e8re joue plusieurs r\u00f4les essentiels. En int\u00e9rieur, vos lampes doivent reproduire les effets du soleil :<\/p>\n<ul data-start=\"3339\" data-end=\"3736\">\n<li data-section-id=\"1gcuh9f\" data-start=\"3339\" data-end=\"3423\"><strong data-start=\"3341\" data-end=\"3352\">Chaleur<\/strong> \u2013 la lampe contribue \u00e0 la temp\u00e9rature globale de l\u2019espace de culture<\/li>\n<li data-section-id=\"ojeg2i\" data-start=\"3424\" data-end=\"3526\"><strong data-start=\"3426\" data-end=\"3441\">Orientation<\/strong> \u2013 la plantule s\u2019oriente en fonction de la lumi\u00e8re, guidant les racines vers le bas<\/li>\n<li data-section-id=\"avla8e\" data-start=\"3527\" data-end=\"3663\"><strong data-start=\"3529\" data-end=\"3555\">Cycle lumineux optimal<\/strong> \u2013 l\u2019adaptation progressive vers un cycle de 18 h de lumi\u00e8re \/ 6 h d\u2019obscurit\u00e9 se fait sur plusieurs jours<\/li>\n<li data-section-id=\"1dms976\" data-start=\"3664\" data-end=\"3736\"><strong data-start=\"3666\" data-end=\"3688\">Contr\u00f4le du climat<\/strong> \u2013 la chaleur aide \u00e0 \u00e9viter un sol trop humide<\/li>\n<\/ul>\n<p data-start=\"3738\" data-end=\"3918\">Pour reproduire l\u2019intensit\u00e9 du soleil, vos lampes doivent \u00eatre r\u00e9gl\u00e9es sur une plage PPFD de 200 \u00e0 400. La distance entre la lampe et la plante influence \u00e9galement cette intensit\u00e9.<\/p>\n<h2 class=\"s5\"><span class=\"s2\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-106599\" src=\"https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/amsterdam_genetics_blog_watering_cannabis_plant-11.jpg\" alt=\"\" width=\"1200\" height=\"540\" srcset=\"https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/amsterdam_genetics_blog_watering_cannabis_plant-11.jpg 1200w, https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/amsterdam_genetics_blog_watering_cannabis_plant-11-300x135.jpg 300w, https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/amsterdam_genetics_blog_watering_cannabis_plant-11-1024x461.jpg 1024w, https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/amsterdam_genetics_blog_watering_cannabis_plant-11-768x346.jpg 768w, https:\/\/www.amsterdamgenetics.com\/wp-content\/uploads\/2024\/06\/amsterdam_genetics_blog_watering_cannabis_plant-11-750x338.jpg 750w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/span><\/h2>\n<h3 data-section-id=\"uvzj5k\" data-start=\"3920\" data-end=\"3950\"><span class=\"ez-toc-section\" id=\"Arrosage_de_votre_plantule\"><\/span>Arrosage de votre plantule<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3952\" data-end=\"4381\">Arrosez avec pr\u00e9caution. Apr\u00e8s une semaine, les racines sont encore peu d\u00e9velopp\u00e9es et n\u00e9cessitent peu d\u2019eau. Vaporisez l\u00e9g\u00e8rement la surface du sol. Pulv\u00e9risez autour de la plantule pour \u00e9viter de l\u2019endommager avec la pression de l\u2019eau. Cela encourage aussi les racines \u00e0 s\u2019\u00e9tendre. Vous pouvez \u00e9galement utiliser un arrosage par le bas via une soucoupe. Il est recommand\u00e9 d\u2019utiliser de l\u2019eau propre, distill\u00e9e, avec un pH de 7.<\/p>\n<h2 data-section-id=\"cmnlgj\" data-start=\"4383\" data-end=\"4425\"><span class=\"ez-toc-section\" id=\"Signes_dune_plantule_en_mauvaise_sante\"><\/span>Signes d\u2019une plantule en mauvaise sant\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"4427\" data-end=\"4609\">Surveillez attentivement votre plantule durant cette premi\u00e8re semaine. De l\u00e9gers changements peuvent avoir des cons\u00e9quences importantes par la suite. Voici quelques signes d\u2019alerte :<\/p>\n<ul data-start=\"4611\" data-end=\"5013\">\n<li data-section-id=\"1bxr39d\" data-start=\"4611\" data-end=\"4688\"><strong data-start=\"4613\" data-end=\"4636\">Plantule qui penche<\/strong> \u2013 tige faible, possiblement due \u00e0 un manque d\u2019eau<\/li>\n<li data-section-id=\"g3imli\" data-start=\"4689\" data-end=\"4837\"><strong data-start=\"4691\" data-end=\"4711\">Croissance lente<\/strong> \u2013 si les feuilles ne se d\u00e9veloppent pas, cela peut indiquer un probl\u00e8me racinaire, comme la pourriture due \u00e0 un exc\u00e8s d\u2019eau<\/li>\n<li data-section-id=\"11y3n2u\" data-start=\"4838\" data-end=\"5013\"><strong data-start=\"4840\" data-end=\"4864\">\u00c9tirage (<a href=\"https:\/\/www.amsterdamgenetics.com\/fr\/prevention-de-letirement-du-cannabis\/\">stretching<\/a>)<\/strong> \u2013 la plantule s\u2019allonge vers la lumi\u00e8re. Dans ce cas, rapprochez la lampe. Une distance id\u00e9ale se situe entre 15 et 25 cm au-dessus de la plantule<\/li>\n<\/ul>\n<p data-start=\"5015\" data-end=\"5203\"><a href=\"https:\/\/www.amsterdamgenetics.com\/fr\/\">Les graines de cannabis<\/a> AG sont r\u00e9put\u00e9es pour produire des plantules vigoureuses. En appliquant ces conseils durant la premi\u00e8re semaine, vous posez les bases d\u2019une plante saine et robuste.<\/p>\n<p class=\"s4\"><strong>Stretching &#8211;<\/strong> the seedling is stretching towards the grow lights to receive more light. Solve this issue by physically lowering your grow lights. 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