{"id":712236,"date":"2023-07-11T08:00:00","date_gmt":"2023-07-11T15:00:00","guid":{"rendered":"https:\/\/theseedconnect.com\/?p=712236"},"modified":"2026-09-19T15:59:16","modified_gmt":"2026-09-19T15:59:16","slug":"ultraviolet-uv-light","status":"publish","type":"post","link":"https:\/\/theseedconnect.com\/blog\/ultraviolet-uv-light\/","title":{"rendered":"UV Light for Cannabis: UVA vs UVB, Benefits, Risks &amp; Evidence"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>UV light for cannabis<\/strong> can influence plant stress responses and secondary compounds, but its benefits are often overstated. UVA and UVB may affect terpene production or plant development under certain conditions, while excessive exposure can reduce growth or damage plant tissue.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Recent research published in <em>Frontiers in Plant Science<\/em> found that a low-intensity, mostly-UVA treatment increased some terpene concentrations without increasing cannabinoids or flower yield. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"key-takeaway\"><strong>Key Takeaway<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UVA appears more promising than UVB for routine experimentation.<\/strong> Low-intensity UVA-heavy treatments have increased some terpene concentrations in controlled cannabis research.<\/li>\n\n\n\n<li><strong>UVB does not automatically increase THC.<\/strong> Newer studies show mixed results, and stronger UV exposure can reduce leaf growth or create unnecessary stress.<\/li>\n\n\n\n<li><strong>UVC is not normal grow lighting.<\/strong> It is mainly used for sanitation and can damage plant tissue, eyes, and skin.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#what-is-uv-light\">What Is UV Light?<\/a><\/li><li><a href=\"#uva-vs-uvb-vs-uvc-for-cannabis\">UVA vs UVB vs UVC for Cannabis<\/a><ul><\/ul><\/li><li><a href=\"#does-uv-light-increase-thc\">Does UV Light Increase THC?<\/a><\/li><li><a href=\"#can-uv-light-improve-terpenes\">Can UV Light Improve Terpenes?<\/a><\/li><li><a href=\"#does-uv-increase-cannabis-yield\">Does UV Increase Cannabis Yield?<\/a><\/li><li><a href=\"#when-does-uv-make-sense\">When Does UV Make Sense?<\/a><\/li><li><a href=\"#when-uv-probably-is-not-worth-it\">When UV Probably Is Not Worth It<\/a><\/li><li><a href=\"#how-much-uv-should-cannabis-get\">How Much UV Should Cannabis Get?<\/a><\/li><li><a href=\"#signs-of-too-much-uv\">Signs of Too Much UV<\/a><\/li><li><a href=\"#uv-safety-for-growers\">UV Safety for Growers<\/a><\/li><li><a href=\"#how-to-know-whether-uv-is-actually-helping\">How to Know Whether UV Is Actually Helping<\/a><\/li><li><a href=\"#should-beginners-use-uv\">Should Beginners Use UV?<\/a><\/li><li><a href=\"#final-thoughts\">Final Thoughts<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 id=\"what-is-uv-light\" class=\"wp-block-heading\">What Is UV Light?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ultraviolet light sits just beyond visible violet light on the electromagnetic spectrum. It is divided into three main ranges:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>UV Type<\/th><th>Approximate Wavelength<\/th><th>Main Cultivation Relevance<\/th><\/tr><\/thead><tbody><tr><td>UVA<\/td><td>315\u2013400 nm<\/td><td>Supplemental lighting and research<\/td><\/tr><tr><td>UVB<\/td><td>280\u2013315 nm<\/td><td>Stronger plant stress response<\/td><\/tr><tr><td>UVC<\/td><td>100\u2013280 nm<\/td><td>Mainly sanitation<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The main light used by cannabis for photosynthesis falls within photosynthetically active radiation, or PAR, which generally covers wavelengths from about 400 to 700 nm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">UV therefore should not replace your main <a class=\"thirstylink\" title=\"Spider Farmer SF-1000 LED Grow Light\" href=\"https:\/\/theseedconnect.com\/blog\/recommends\/spider-farmer-sf-1000-led-grow-light\/\" data-shortcode=\"true\">grow light<\/a>. It is supplemental radiation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you are still choosing your primary lighting system, start with The Seed Connect&#8217;s <a href=\"https:\/\/theseedconnect.com\/blog\/grow-lights-for-weed\/\">grow lights for weed guide<\/a> before adding UV.<\/p>\n\n\n\n<h2 id=\"uva-vs-uvb-vs-uvc-for-cannabis\" class=\"wp-block-heading\">UVA vs UVB vs UVC for Cannabis<\/h2>\n\n\n\n<h3 id=\"uva\" class=\"wp-block-heading\">UVA<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">UVA is the least energetic of the three main UV bands and is generally less damaging than shorter-wavelength UVB and UVC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is also where some of the more interesting modern cannabis research is emerging.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/www.frontiersin.org\/journals\/plant-science\/articles\/10.3389\/fpls.2024.1480876\/\" target=\"_blank\" rel=\"noopener\">2024 controlled study on UV exposure in cannabis<\/a> tested several UV treatments and found that a <strong>low-intensity treatment consisting mostly of UVA<\/strong> increased concentrations of some terpenes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Importantly, the treatment did <strong>not<\/strong> increase cannabinoids or yield.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That distinction matters. UVA may influence certain quality characteristics, but growers should not assume it automatically improves potency.<\/p>\n\n\n\n<h3 id=\"uvb\" class=\"wp-block-heading\">UVB<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">UVB is more energetic and creates a stronger stress response.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Older cannabis-growing advice often claims that UVB forces the plant to produce more THC as protection from radiation. That idea has been repeated for years, but current evidence is not strong enough to treat it as a universal rule.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The same 2024 study found that the tested UV treatments did not improve cannabinoid profiles, while stronger UVB exposure reduced leaf area.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A broader <a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC8200639\/\" target=\"_blank\" rel=\"noopener\">scientific review of cannabis photobiology<\/a> also concluded that UV has potential to influence cannabis physiology, but available studies are limited and sometimes inconsistent.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So UVB should be approached carefully rather than treated as a simple potency booster.<\/p>\n\n\n\n<h3 id=\"uvc\" class=\"wp-block-heading\">UVC<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">UVC is much higher energy and is mainly relevant to sanitation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It may be used in controlled systems to reduce microorganisms, but it is <strong>not appropriate as ordinary cannabis grow lighting<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">UVC exposure can damage:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>plant tissue<\/li>\n\n\n\n<li>DNA<\/li>\n\n\n\n<li>human skin<\/li>\n\n\n\n<li>human eyes<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If the goal is better plant development or terpene production, UVC is not where growers should start.<\/p>\n\n\n\n<h2 id=\"does-uv-light-increase-thc\" class=\"wp-block-heading\">Does UV Light Increase THC?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There is no reliable evidence that simply adding UV to a cannabis grow will consistently increase THC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The idea is attractive because cannabis produces protective compounds in response to environmental stress. But plant stress does not automatically translate into higher cannabinoid production.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The recent controlled cannabis study mentioned earlier found <strong>no meaningful cannabinoid increase across the UV treatments tested<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There is also evidence that ultraviolet exposure can degrade cannabinoids under certain conditions. A laboratory study examining <a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC12985540\/\" target=\"_blank\" rel=\"noopener\">UV-related cannabinoid photodegradation<\/a> found that compounds including THC, CBD, THCA, and CBDA could degrade under shorter-wavelength UV exposure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The practical takeaway is simple:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">More UV does not automatically mean more THC.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">The response depends on genetics, spectrum, intensity, duration, background lighting, and growing conditions.<\/p>\n\n\n\n<h2 id=\"can-uv-light-improve-terpenes\" class=\"wp-block-heading\">Can UV Light Improve Terpenes?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is where UV may be more interesting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.frontiersin.org\/articles\/10.3389\/fpls.2026.1953265\" target=\"_blank\" rel=\"noopener\">2024 <em>Frontiers in Plant Science<\/em><\/a> study found that a low-intensity UVA-heavy treatment increased several measured terpenes, including compounds such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>limonene<\/li>\n\n\n\n<li>myrcene<\/li>\n\n\n\n<li>linalool<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Stronger treatments did not produce the same improvement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That suggests the response is <strong>dose-dependent<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A small amount of supplemental UV may influence plant chemistry differently from a stronger dose that simply creates stress.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you want to verify whether UV actually changes your crop&#8217;s terpene profile, laboratory testing is far more useful than relying on smell alone. Our <a href=\"https:\/\/theseedconnect.com\/blog\/terpene-testing\/\">terpene testing guide<\/a> explains how professional labs measure terpenes and how to read a terpene Certificate of Analysis.<\/p>\n\n\n\n<h2 id=\"does-uv-increase-cannabis-yield\" class=\"wp-block-heading\">Does UV Increase Cannabis Yield?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">UV should not be treated as a yield booster.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In fact, excessive UV can reduce plant growth.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Higher UVB exposure in controlled research has been associated with reduced leaf expansion and other stress responses. That makes sense because plants must use resources to protect themselves and repair damage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If your main goal is increasing yield, focus first on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>proper light intensity<\/li>\n\n\n\n<li>even canopy coverage<\/li>\n\n\n\n<li>temperature<\/li>\n\n\n\n<li>humidity<\/li>\n\n\n\n<li>irrigation<\/li>\n\n\n\n<li>nutrition<\/li>\n\n\n\n<li>plant spacing<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These factors generally have a much larger effect than supplemental UV.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Seed Connect&#8217;s <a href=\"https:\/\/theseedconnect.com\/grow-guides\/indoor-growing-guide\">indoor cannabis growing guide<\/a> covers these fundamentals in more detail.<\/p>\n\n\n\n<h2 id=\"when-does-uv-make-sense\" class=\"wp-block-heading\">When Does UV Make Sense?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">UV becomes worth considering when the rest of the grow is already stable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It may make sense if:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>your main lighting is properly sized<\/li>\n\n\n\n<li>plants are healthy<\/li>\n\n\n\n<li>temperature and humidity are controlled<\/li>\n\n\n\n<li>you can accurately control UV exposure<\/li>\n\n\n\n<li>you want to compare terpene profiles across similar grows<\/li>\n\n\n\n<li>you are willing to stop exposure if plants show stress<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Think of UV as an advanced variable rather than a basic requirement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you are still correcting stretched plants, poor canopy lighting, overheating, or inconsistent photoperiods, those problems deserve attention first.<\/p>\n\n\n\n<h2 id=\"when-uv-probably-is-not-worth-it\" class=\"wp-block-heading\">When UV Probably Is Not Worth It<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For many home growers, dedicated UV lighting may not provide enough benefit to justify the added complexity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A good full-spectrum LED can already support excellent cannabis growth without separate UV equipment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before adding another fixture, make sure you have already optimized:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PPFD<\/li>\n\n\n\n<li>canopy coverage<\/li>\n\n\n\n<li>hanging height<\/li>\n\n\n\n<li>light cycle<\/li>\n\n\n\n<li>heat management<\/li>\n\n\n\n<li>airflow<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If your main concern is timing rather than spectrum, our guide to the <a href=\"https:\/\/theseedconnect.com\/blog\/the-best-light-cycles-for-cannabis-growth\/\">best light cycle for cannabis<\/a> explains the practical differences between 18\/6, 12\/12, and autoflower schedules.<\/p>\n\n\n\n<h2 id=\"how-much-uv-should-cannabis-get\" class=\"wp-block-heading\">How Much UV Should Cannabis Get?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There is no universal exposure recommendation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Advice such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201crun UV for two hours\u201d<\/li>\n\n\n\n<li>\u201ckeep the lamp 18 inches away\u201d<\/li>\n\n\n\n<li>\u201cuse UV during the last three weeks\u201d<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">is incomplete unless the fixture&#8217;s actual UV output is known.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exposure depends on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>UVA vs UVB output<\/li>\n\n\n\n<li>irradiance<\/li>\n\n\n\n<li>fixture distance<\/li>\n\n\n\n<li>duration<\/li>\n\n\n\n<li>cultivar<\/li>\n\n\n\n<li>growth stage<\/li>\n\n\n\n<li>background lighting<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Two lamps placed at the same distance can expose plants to very different UV doses.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For this reason, follow the fixture manufacturer&#8217;s safety and exposure guidance instead of copying a generic schedule from another grow.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Start conservatively and monitor plant response.<\/p>\n\n\n\n<h2 id=\"signs-of-too-much-uv\" class=\"wp-block-heading\">Signs of Too Much UV<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Excessive UV exposure can cause symptoms such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>leaf curling<\/li>\n\n\n\n<li>bleaching<\/li>\n\n\n\n<li>brown patches<\/li>\n\n\n\n<li>reduced leaf expansion<\/li>\n\n\n\n<li>slowed growth<\/li>\n\n\n\n<li>unusual dryness<\/li>\n\n\n\n<li>declining vigor<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These symptoms can overlap with ordinary light or heat stress, so evaluate the entire environment before assuming UV is responsible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If plants already show signs of excessive light intensity, adding UV usually makes little sense.<\/p>\n\n\n\n<h2 id=\"uv-safety-for-growers\" class=\"wp-block-heading\">UV Safety for Growers<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">UV safety deserves as much attention as plant performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Unlike visible <a class=\"thirstylink\" title=\"Spider Farmer SF-1000 LED Grow Light\" href=\"https:\/\/theseedconnect.com\/blog\/recommends\/spider-farmer-sf-1000-led-grow-light\/\" data-shortcode=\"true\">grow light<\/a>, UV radiation can cause harm even when it does not appear especially bright.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Possible risks include damage to the eyes and skin.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When using supplemental UV:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>avoid looking directly at the fixture<\/li>\n\n\n\n<li>avoid unnecessary skin exposure<\/li>\n\n\n\n<li>follow the manufacturer&#8217;s protective-equipment recommendations<\/li>\n\n\n\n<li>switch UV fixtures off before entering the grow area when practical<\/li>\n\n\n\n<li>prevent pets and unnecessary people from entering during exposure<\/li>\n\n\n\n<li>treat UVC with particular caution<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.fda.gov\/radiation-emitting-products\/tanning\/ultraviolet-uv-radiation\" target=\"_blank\" rel=\"noopener\">U.S. Food and Drug Administration&#8217;s UV radiation guidance<\/a> explains the potential effects of ultraviolet radiation on skin and eyes.<\/p>\n\n\n\n<h2 id=\"how-to-know-whether-uv-is-actually-helping\" class=\"wp-block-heading\">How to Know Whether UV Is Actually Helping<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Do not judge UV effectiveness only by how frosty the flowers look.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you want meaningful results, track measurable outcomes between grows.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Consider recording:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>dry flower yield<\/li>\n\n\n\n<li>visible stress<\/li>\n\n\n\n<li>leaf development<\/li>\n\n\n\n<li>plant height<\/li>\n\n\n\n<li>flowering time<\/li>\n\n\n\n<li>terpene laboratory results<\/li>\n\n\n\n<li>cannabinoid laboratory results<\/li>\n\n\n\n<li>electricity use<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ideally, compare similar plants under similar conditions while changing only UV exposure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For terpene or cannabinoid testing, use the same laboratory and sampling method where possible. Different labs and sample-handling procedures can produce different results.<\/p>\n\n\n\n<h2 id=\"should-beginners-use-uv\" class=\"wp-block-heading\">Should Beginners Use UV?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Usually, no.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Beginners will normally get much more value from learning how to manage:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>light intensity<\/li>\n\n\n\n<li>hanging height<\/li>\n\n\n\n<li>light schedules<\/li>\n\n\n\n<li>watering<\/li>\n\n\n\n<li>temperature<\/li>\n\n\n\n<li>humidity<\/li>\n\n\n\n<li>airflow<\/li>\n\n\n\n<li>nutrition<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Those fundamentals determine far more of the crop&#8217;s performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Once they are consistent, UV can become an optional experiment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A good way to think about it is:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Primary lighting grows the plant. UV may fine-tune how the plant responds.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Do not reverse those priorities.<\/p>\n\n\n\n<h2 id=\"final-thoughts\" class=\"wp-block-heading\">Final Thoughts<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>UV light for cannabis<\/strong> is an interesting cultivation tool, but the evidence is more nuanced than many older grow guides suggest.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">UVA appears to be the most promising area for controlled experimentation. Recent research found that low-intensity, UVA-heavy exposure increased some terpene concentrations without improving cannabinoid levels or yield.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">UVB produces a stronger stress response and should be used more cautiously. Current evidence does not support the simple claim that adding UVB will reliably increase THC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">UVC is primarily a sanitation technology and should not be treated as ordinary cannabis lighting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For most growers, the smartest approach is to get the basics right first: choose a good main <a class=\"thirstylink\" title=\"Spider Farmer SF-1000 LED Grow Light\" href=\"https:\/\/theseedconnect.com\/blog\/recommends\/spider-farmer-sf-1000-led-grow-light\/\" data-shortcode=\"true\">grow light<\/a>, maintain the correct light cycle, control temperature and humidity, and build an even canopy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Only then should UV become part of the experiment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ultraviolet (UV) light, an invisible form of electromagnetic radiation, has been a game changer in various industries, including cannabis cultivation. The science of ultraviolet light dates back to the 19th century when Johann Wilhelm Ritter first discovered it. <\/p>\n","protected":false},"author":2,"featured_media":801232,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[25,129],"tags":[],"content-cluster":[],"sub-cluster":[],"class_list":["post-712236","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cultivation-grow-tips","category-lighting-photoperiod","infinite-scroll-item","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-25","no-featured-image-padding"],"acf":[],"_links":{"self":[{"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/posts\/712236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/comments?post=712236"}],"version-history":[{"count":2,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/posts\/712236\/revisions"}],"predecessor-version":[{"id":801233,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/posts\/712236\/revisions\/801233"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/media\/801232"}],"wp:attachment":[{"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/media?parent=712236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/categories?post=712236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/tags?post=712236"},{"taxonomy":"content-cluster","embeddable":true,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/content-cluster?post=712236"},{"taxonomy":"sub-cluster","embeddable":true,"href":"https:\/\/theseedconnect.com\/blog\/wp-json\/wp\/v2\/sub-cluster?post=712236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}