{"id":26227,"date":"2026-10-26T05:13:12","date_gmt":"2026-10-26T04:13:12","guid":{"rendered":"https:\/\/www.trikomaseeds.com\/?p=26227"},"modified":"2026-10-26T05:13:12","modified_gmt":"2026-10-26T04:13:12","slug":"feminized-autoflowering-and-fast-version-whats-the-difference","status":"publish","type":"post","link":"https:\/\/www.trikomaseeds.com\/en\/feminized-autoflowering-and-fast-version-whats-the-difference\/","title":{"rendered":"Feminized, autoflowering and fast version: what&#8217;s the difference"},"content":{"rendered":"<p>When you browse a seed bank&#8217;s catalog, almost every variety falls into one of three families: feminized, autoflowering and fast version. The names sound similar, but they describe different things. This guide explains what each one means and how to interpret the data shown on the product pages.<\/p>\n<h2>Feminized seeds<\/h2>\n<p>&#8220;Feminized&#8221; refers to the sex of the plant, not its speed or its size. A feminized seed comes from a cross prepared so that practically all the resulting plants are female. At Trikoma Seeds our seeds are 99.9% feminized.<\/p>\n<p>Classic feminized strains are also <strong>photoperiod-dependent<\/strong>: their flowering depends on the hours of light they receive. In the northern hemisphere this means they flower as the days get shorter, from late summer onwards, and in the southern hemisphere the cycle shifts by half a year.<\/p>\n<p>On the product pages you&#8217;ll see two figures that shouldn&#8217;t be confused:<\/p>\n<ul>\n<li><strong>Indoor flowering:<\/strong> the number of days the flowering phase lasts. For example, <a href=\"https:\/\/www.trikomaseeds.com\/en\/semillas\/critical-plus\/\">Critical Plus<\/a> is listed at 56\u201363 days and <a href=\"https:\/\/www.trikomaseeds.com\/en\/semillas\/jack-herer\/\">Jack Herer<\/a> at 77\u201385.<\/li>\n<li><strong>Outdoor flowering:<\/strong> the approximate time of year when the variety completes that phase.<\/li>\n<\/ul>\n<p>You can see this whole family in our collection of <a href=\"https:\/\/www.trikomaseeds.com\/semillas-marihuana\/feminized\/\">feminized seeds<\/a>.<\/p>\n<h2>Autoflowering seeds<\/h2>\n<p>Autoflowering strains incorporate <em>Cannabis ruderalis<\/em> genetics, a subspecies native to cold regions with very short summers. Its distinctive trait is that it flowers according to age, not light.<\/p>\n<p>Practical consequences:<\/p>\n<ul>\n<li><strong>Fixed, short cycle:<\/strong> between 70 and 85 days from seed, depending on the variety. On the product page you won&#8217;t see &#8220;outdoor flowering in September&#8221;, but a total cycle length.<\/li>\n<li><strong>Smaller size:<\/strong> they usually stay under one metre. <a href=\"https:\/\/www.trikomaseeds.com\/en\/semillas\/critical-plus-auto\/\">Critical Plus Auto<\/a>, for example, rarely exceeds 90 cm.<\/li>\n<li><strong>Slightly lower declared THC<\/strong> than the photoperiod version of the same genetics, although the gap has narrowed a lot in recent generations.<\/li>\n<\/ul>\n<p>All of ours are in the <a href=\"https:\/\/www.trikomaseeds.com\/semillas-marihuana\/autoflowering\/\">autoflowering seeds<\/a> collection.<\/p>\n<h2>Fast version<\/h2>\n<p>A fast version is the middle ground. It is still <strong>photoperiod-dependent and feminized<\/strong>, like a classic strain, but its flowering cycle is shorter because a fast-flowering variety has been introduced into its lineage.<\/p>\n<p>The difference is clear when you compare the same genetics in its two versions:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.trikomaseeds.com\/en\/semillas\/white-widow\/\">White Widow<\/a>: 47\u201356 days of flowering.<\/li>\n<li><a href=\"https:\/\/www.trikomaseeds.com\/en\/semillas\/white-widow-fast-version\/\">White Widow Fast<\/a>: 40\u201349 days.<\/li>\n<\/ul>\n<p>A fast version is not an autoflowering strain: it still needs the change in photoperiod to flower. You can see them all in <a href=\"https:\/\/www.trikomaseeds.com\/semillas-marihuana\/fast-versions-en\/\">Fast Versions<\/a>.<\/p>\n<h2>Summary table<\/h2>\n<table>\n<tr>\n<th><\/th>\n<th>Feminized<\/th>\n<th>Autoflowering<\/th>\n<th>Fast version<\/th>\n<\/tr>\n<tr>\n<td>Flowers according to<\/td>\n<td>Hours of light<\/td>\n<td>Age of the plant<\/td>\n<td>Hours of light<\/td>\n<\/tr>\n<tr>\n<td>Duration<\/td>\n<td>Longer cycle<\/td>\n<td>70\u201385 days in total<\/td>\n<td>Shorter flowering<\/td>\n<\/tr>\n<tr>\n<td>Size<\/td>\n<td>Medium-large<\/td>\n<td>Small-medium<\/td>\n<td>Medium-large<\/td>\n<\/tr>\n<tr>\n<td>Added genetics<\/td>\n<td>\u2014<\/td>\n<td>Ruderalis<\/td>\n<td>Fast-flowering line<\/td>\n<\/tr>\n<\/table>\n<h2>How to read a product page with judgement<\/h2>\n<p>THC percentages, flowering days and the indica\/sativa ratio are <strong>catalog data<\/strong>: they help identify and compare genetics with one another, but they are not guarantees. Two seeds of the same variety can express themselves differently depending on conditions.<\/p>\n<p>What is stable is the <strong>parent genetics<\/strong>. That&#8217;s why our product pages always state the cross: knowing that <a href=\"https:\/\/www.trikomaseeds.com\/en\/semillas\/malquerida\/\">Malquerida<\/a> comes from Critical Bilbo \u00d7 Northern Lights tells you much more about the variety than any round number.<\/p>\n<h2>Legal information<\/h2>\n<p>Trikoma Seeds&#8217; seeds are sold exclusively for collecting and genetic conservation purposes. This article is catalog information and does not encourage germination or any unauthorized activity. Check and comply with your country&#8217;s regulations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We explain how feminized, autoflowering and fast version seeds differ, and how to read the data on a catalog product page.<\/p>\n","protected":false},"author":188,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[],"class_list":["post-26227","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Feminized vs autoflowering vs fast version | Trikoma Seeds<\/title>\n<meta name=\"description\" content=\"Differences between feminized, autoflowering and fast version seeds: how they flower, cycle length, size and how to read the data on a product page.\" \/>\n<meta name=\"robots\" content=\"index, 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