{"id":11717,"date":"2026-11-11T18:05:25","date_gmt":"2026-11-11T17:05:25","guid":{"rendered":"https:\/\/libolux.com\/?p=11717"},"modified":"2026-11-11T18:23:20","modified_gmt":"2026-11-11T17:23:20","slug":"winter-light-for-houseplants","status":"publish","type":"post","link":"https:\/\/libolux.com\/en\/blog\/winter-light-for-houseplants\/","title":{"rendered":"Your plants are starving for light this winter (and it isn\u2019t the watering)"},"content":{"rendered":"<div class=\"lbxb-answer\"><span class=\"lbxb-k\">Respuesta r\u00e1pida<\/span><p>En diciembre, junto a una ventana, una planta de interior puede recibir <strong>menos de 2 mol de luz al d\u00eda<\/strong>. Una monstera o un ficus necesitan entre 6 y 12. No es el riego: es hambre de luz.<\/p><p>Un panel LED peque\u00f1o y regulable, 12-16 horas al d\u00eda con programador, lo resuelve por <strong>unos 5 \u20ac al mes<\/strong>.<\/p><\/div>\n<div data-w=\"toc\"><\/div>\n<p>Si en invierno tus plantas se estiran, pierden hojas de abajo, se inclinan hacia la ventana o la tierra tarda una semana en secarse, el problema casi nunca es el agua. Es la luz. Y la ventana no la arregla.<\/p>\n<p>Dentro de casa hay much\u00edsima menos luz de la que parece, y en invierno la poca que entra dura menos horas. El ojo se adapta y no lo nota. La planta s\u00ed.<\/p>\n<h2>Cu\u00e1nta luz llega de verdad a tus plantas<\/h2>\n<p>Un ejemplo medido: una ventana orientada al oeste, a principios de diciembre, daba unos 60 \u00b5mol\/m\u00b2\/s justo delante, y con 9 horas de d\u00eda eso dejaba a la planta <a href=\"https:\/\/laidbackgardener.blog\/2023\/12\/03\/lighting-a-helping-hand-for-our-houseplants-in-winter\/\" target=\"_blank\" rel=\"noopener\">por debajo de 2 mol al d\u00eda<\/a>. En la pared de enfrente, la lectura bajaba a 1 \u00b5mol\/m\u00b2\/s. Pr\u00e1cticamente oscuridad.<\/p>\n<p>El patr\u00f3n es general: al acercarse a un edificio se pierde en torno al 60 % de la luz exterior, el cristal se come otro 30 %, y a unos metros de la ventana <a href=\"https:\/\/www.su.se\/english\/divisions\/department-of-psychology\/news\/articles\/2025-01-13-how-to-survive-winter-by-hacking-your-light-habits\" target=\"_blank\" rel=\"noopener\">queda alrededor del 1 %<\/a>.<\/p>\n<p>Esa \u00abcantidad de luz al d\u00eda\u00bb tiene nombre: <strong>DLI<\/strong> (integral de luz diaria), en mol\/m\u00b2\/d\u00eda. Es la cifra que usan viveros e invernaderos para decidir cu\u00e1ndo encender la luz artificial, y la que te dice si tus plantas comen o pasan hambre.<\/p>\n<h2>Cu\u00e1nta luz necesita cada planta<\/h2>\n<p>Cada planta tiene su raci\u00f3n. Por debajo sobrevive a duras penas; dentro del rango crece compacta y con buen color.<\/p>\n<figure class=\"wp-block-table\"><table><thead><tr><th>Tipo de planta<\/th><th>Ejemplos<\/th><th>DLI (mol\/m\u00b2\/d\u00eda)<\/th><\/tr><\/thead><tbody><tr><td>Interior de poca luz<\/td><td>Potus, sansevieria, zamioculca<\/td><td>2 \u2013 6<\/td><\/tr><tr><td>Sombra de flor<\/td><td>Violeta africana, orqu\u00eddea phalaenopsis<\/td><td>4 \u2013 6<\/td><\/tr><tr><td>Interior de luz media<\/td><td>Monstera, ficus, calathea<\/td><td>6 \u2013 12<\/td><\/tr><tr><td>Semilleros y plantones<\/td><td>Tomate, pimiento, lechuga, flor de temporada<\/td><td>10 \u2013 12 como m\u00ednimo<\/td><\/tr><tr><td>Interior de mucha luz<\/td><td>Cactus, suculentas, crotos<\/td><td>12 o m\u00e1s<\/td><\/tr><tr><td>Arom\u00e1ticas<\/td><td>Albahaca, perejil, cilantro<\/td><td>14 \u2013 20<\/td><\/tr><\/tbody><\/table><\/figure>\n<p>Rangos de <a href=\"https:\/\/www.canr.msu.edu\/resources\/daily_light_integral_defined\" target=\"_blank\" rel=\"noopener\">Michigan State University<\/a> (semilleros y plantas de sombra), <a href=\"https:\/\/laidbackgardener.blog\/2023\/12\/03\/lighting-a-helping-hand-for-our-houseplants-in-winter\/\" target=\"_blank\" rel=\"noopener\">Laidback Gardener<\/a> (plantas de interior) y <a href=\"https:\/\/www.agritecture.com\/dli-test\" target=\"_blank\" rel=\"noopener\">Agritecture<\/a> (arom\u00e1ticas).<\/p>\n<p>Junta las dos cosas y ver\u00e1s el problema: una monstera que pide 6-12 mol, en una ventana que en diciembre da menos de 2, recibe <strong>entre tres y seis veces menos luz<\/strong> de la que necesita. No est\u00e1 enferma. Est\u00e1 a dieta.<\/p>\n<h2>Las cinco se\u00f1ales de hambre de luz<\/h2>\n<ol><li><strong>Tallos largos y finos<\/strong>, con mucho espacio entre hoja y hoja. La planta se estira buscando luz.<\/li><li><strong>Hojas nuevas m\u00e1s peque\u00f1as<\/strong> que las viejas, y m\u00e1s p\u00e1lidas.<\/li><li><strong>Las variegadas se vuelven verdes<\/strong>: las zonas blancas no hacen fotos\u00edntesis y la planta deja de fabricarlas.<\/li><li><strong>Caen las hojas de abajo.<\/strong> La planta abandona lo que no puede mantener.<\/li><li><strong>La tierra no se seca.<\/strong> Con poca luz la planta apenas usa agua, y el riego de siempre acaba pudriendo las ra\u00edces. Muchas \u00abplantas ahogadas\u00bb son en realidad plantas a oscuras.<\/li><\/ol>\n<h2>Calcula cu\u00e1nta luz les tienes que dar<\/h2>\n<p>El DLI sale de multiplicar la intensidad de la luz por las horas que est\u00e1 encendida:<\/p>\n<p><strong>DLI = PPFD \u00d7 horas \u00d7 0,0036<\/strong><\/p>\n<p>El PPFD es la luz que llega a las hojas, en \u00b5mol\/m\u00b2\/s. Para dar 8 mol al d\u00eda a una monstera con la l\u00e1mpara 14 horas encendida, necesitas unos <strong>160 \u00b5mol\/m\u00b2\/s<\/strong> sobre las hojas. Para un semillero de tomate a 12 mol en 16 horas, unos <strong>210<\/strong>.<\/p>\n<p>No hace falta m\u00e1s. Pasarse no mejora la planta y gasta luz que pagas t\u00fa. La explicaci\u00f3n completa est\u00e1 en <a href=\"https:\/\/libolux.com\/blog\/ppfd-dli-cuanta-luz-necesita-tu-cultivo\/\">PPFD y DLI: cu\u00e1nta luz necesitan tus plantas<\/a>.<\/p>\n<h2>Qu\u00e9 l\u00e1mpara poner y cu\u00e1nto gasta<\/h2>\n<p>Un ejemplo t\u00edpico: una balda de semillero de 1 \u00d7 0,5 m a 210 \u00b5mol\/m\u00b2\/s. Sobre medio metro cuadrado eso son unos 105 \u00b5mol\/s que tienen que llegar a las hojas. En una balda abierta, sin paredes que reflejen, se pierde m\u00e1s o menos la mitad por los lados, as\u00ed que la l\u00e1mpara tiene que dar unos 210 \u00b5mol\/s.<\/p>\n<p>Un panel peque\u00f1o como el <strong>Lucius 120 W<\/strong> da unos 348 \u00b5mol\/s (120 W \u00d7 2,9 \u00b5mol\/J). Va sobrado, y como el driver es <strong>regulable<\/strong>, lo bajas al 60 % y listo.<\/p>\n<p>Lo que cuesta: 72 W reales \u00d7 16 horas \u00d7 30 d\u00edas = 35 kWh al mes. A 0,15 \u20ac\/kWh, <strong>unos 5 \u20ac al mes<\/strong>; a 0,35 \u20ac\/kWh, unos 12 \u20ac. Por un semillero entero o un rinc\u00f3n de plantas, todo el invierno.<\/p>\n<p>Para una zona m\u00e1s grande (una estanter\u00eda de plantas, una galer\u00eda acristalada, un invernadero peque\u00f1o) el siguiente paso es el <strong>Lucius 240 W<\/strong>. Calcula el tuyo:<\/p>\n<div class=\"lbxb-w\" data-w=\"calc\"><\/div>\n<h2>Cinco reglas para hacerlo bien<\/h2>\n<ul><li><strong>Programador siempre.<\/strong> 12 a 14 horas para plantas de interior, 14 a 16 para semilleros y arom\u00e1ticas. Nunca 24 horas: las plantas tambi\u00e9n necesitan su noche.<\/li><li><strong>Ni pegada ni lejos.<\/strong> Con poca potencia, entre 30 y 60 cm de las hojas. Lo explicamos a fondo en <a href=\"https:\/\/libolux.com\/blog\/a-que-altura-poner-el-panel-led\/\">a qu\u00e9 altura poner el panel LED<\/a>.<\/li><li><strong>Empieza suave.<\/strong> Una planta que lleva semanas a oscuras puede quemarse con un cambio brusco. Primera semana al 30-40 % y ve subiendo.<\/li><li><strong>Riega menos de lo que crees al principio<\/strong>, y m\u00e1s a medida que la planta reactive el crecimiento. Con luz, vuelve a beber.<\/li><li><strong>Luz blanca, no morada.<\/strong> Ver\u00e1s el color real de tus plantas, notar\u00e1s antes cualquier problema y no tendr\u00e1s el sal\u00f3n como una discoteca.<\/li><\/ul>\n<h2>Semilleros: el invierno es cuando se ganan<\/h2>\n<p>Los tomates, pimientos y berenjenas de verano se siembran en interior entre 6 y 8 semanas antes de la \u00faltima helada. En la mayor parte de Espa\u00f1a eso cae entre enero y marzo, justo cuando la luz es m\u00e1s escasa.<\/p>\n<p>Un plant\u00f3n criado en la ventana sale largo, fino y con el tallo d\u00e9bil, y le cuesta arrancar al trasplantarlo. Uno criado con 10-12 mol al d\u00eda sale corto, robusto y listo para el huerto. La diferencia se ve en las dos primeras semanas.<\/p>\n<div class=\"lbxb-w\" data-w=\"prod\" data-ids=\"8920,9000,9081\" data-title=\"Tres tama\u00f1os para casa, balda o galer\u00eda\"><\/div>\n<div class=\"lbxb-w lbxb-faq\" data-w=\"faq\"><header><p class=\"lbxb-t\">Preguntas frecuentes<\/p><p><span class=\"lbxb-k\">Dudas reales<\/span><\/p><\/header><div class=\"lbxb-b\"><ol><li><h3><button type=\"button\" aria-expanded=\"false\">\u00bfSirve cualquier bombilla LED de casa?<\/button><\/h3><div class=\"lbxb-a\"><div><p>Ilumina, pero da muy poca luz \u00fatil para la planta por cada vatio. Para una planta suelta y de poca luz puede bastar; para un semillero o varias plantas, no.<\/p><\/div><\/div><\/li><li><h3><button type=\"button\" aria-expanded=\"false\">\u00bfCu\u00e1ntas horas enciendo la l\u00e1mpara?<\/button><\/h3><div class=\"lbxb-a\"><div><p>Entre 12 y 16 seg\u00fan la planta, siempre con programador. Si la planta tambi\u00e9n tiene ventana, cuenta esas horas: la l\u00e1mpara completa lo que falta.<\/p><\/div><\/div><\/li><li><h3><button type=\"button\" aria-expanded=\"false\">\u00bfLa luz de la l\u00e1mpara sustituye al sol?<\/button><\/h3><div class=\"lbxb-a\"><div><p>En invierno, s\u00ed. Las plantas no distinguen de d\u00f3nde viene la luz, solo cu\u00e1nta reciben y de qu\u00e9 calidad.<\/p><\/div><\/div><\/li><li><h3><button type=\"button\" aria-expanded=\"false\">\u00bfQuema las hojas?<\/button><\/h3><div class=\"lbxb-a\"><div><p>Un LED da mucho menos calor que una bombilla tradicional, pero demasiada intensidad de golpe s\u00ed puede decolorarlas. Por eso se empieza bajo y se sube.<\/p><\/div><\/div><\/li><li><h3><button type=\"button\" aria-expanded=\"false\">\u00bfCu\u00e1nto sube la factura?<\/button><\/h3><div class=\"lbxb-a\"><div><p>Con un panel de 120 W regulado al 60 %, unos 5 \u20ac al mes a 0,15 \u20ac\/kWh. Menos que una estufa encendida una tarde.<\/p><\/div><\/div><\/li><\/ol><\/div><\/div>\n<div class=\"lbxb-w\"><header><p class=\"lbxb-t\">\u00bfA qu\u00e9 altura lo cuelgas?<\/p><p><span class=\"lbxb-k\">Sigue leyendo<\/span><\/p><\/header><div class=\"lbxb-b\"><p>La altura no cambia cu\u00e1nta luz das en total, pero s\u00ed si llega pareja a todas las hojas. Te lo explicamos con un simulador.<\/p><div class=\"lbxb-ctas\"><a class=\"lbxb-cta lbxb-cta--ghost\" href=\"https:\/\/libolux.com\/blog\/a-que-altura-poner-el-panel-led\/\">Ver la gu\u00eda de altura \u2192<\/a><\/div><\/div><\/div>\n<div class=\"lbxb-end\"><p class=\"lbxb-t\">\u00bfNo sabes qu\u00e9 tama\u00f1o necesitas?<\/p><p>Dinos qu\u00e9 plantas tienes y d\u00f3nde, y te recomendamos el panel. O calcula t\u00fa mismo con tus medidas.<\/p><div class=\"lbxb-ctas\"><a class=\"lbxb-cta\" href=\"https:\/\/libolux.com\/calculadora\/\">Abrir la calculadora<\/a><a class=\"lbxb-cta lbxb-cta--ghost\" href=\"https:\/\/libolux.com\/contacto\/\">Escr\u00edbenos<\/a><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>In December, next to the window, your plants get less light than they need. How much is missing, how to measure it and which light to use.<\/p>\n","protected":false},"author":1,"featured_media":11778,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[147],"tags":[],"class_list":{"0":"post-11717","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-growing-guides"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Grow lights for houseplants in winter: how much light | Libolux<\/title>\n<meta name=\"description\" content=\"In December, next to the window, your plants get less light than they need. 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