Autoflowering seeds are perfect for those looking for quick, easy, and discreet crops. These varieties are photoperiod-independent, making them easy to grow for both beginners and experts. In this category, you'll find a selection of feminized autoflowering varieties that are hardy and deliver excellent results indoors and outdoors.
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Auto Critical Mass - Advanced Seeds
Alchimia is happy to present Auto Critical Mass by Advanced Seeds, the automatic version of the famous [...]
Platinum Mimosa Cookies Double XL Auto - Growers Choice
Alchimia is pleased to present Platinum Mimosa Cookies Double XL Auto by Growers Choice, an auto-flowering plant with large size, high yields and [...]
Auto Mix + - Philosopher Seeds
The Auto Mix+ Seeds Kit includes 6 varieties from the Philosopher Seeds auto-flowering collection, with 2 seeds of each genetic, making a total of 12 seeds. [...]
Sticky Orange XXL Auto - Sensi Seeds
Alchimia is happy to present Sticky Orange XXL Autoflowering by Sensi Seeds, an easy-to-grow variety with a complete cycle of about 70-80 days and offering sticky [...]
XXL Auto Kit - Philosopher Seeds
Alchimia presents the Philosopher Seeds Kit, a set focused on automatic plants with huge production. A combination of genetics that ensures a top-quality c [...]
Critical Auto XXL - Philosopher Seeds
Alchimia is glad to present Critical Auto XXL by Philosopher Seeds, a giant-sized Critical [...]
Auto Afghan Skunk - Advanced Seeds
Alchimia presents the feminised autoflowering version of the Advanced Seeds variety Afghan Skunk. This hardy and [...]
Auto Amnesia XXL - Advanced Seeds
Alchimia is proud to present Auto Amnesia XXL by Advanced Seeds, an automatic marijuana plant developed from the best Auto Amnesia specimens, a cross between [...]
Kit of autoflowering and feminized marijuana seeds from Sweet Seeds. This kit includes 1 [...]
Purple Skunk Auto - Sensi Seeds
Alchimia is happy to present Purple Skunk Auto by Sensi Seeds, an AutoFem marijuana strain with purple colours and an intoxicating Skunk aroma. This strain has bee [...]
Permanent Whitemarker Auto - Growers Choice
Alchimia is delighted to present Permanent Whitemarker Auto by Growers Choice, a powerful automatic plant with high THC content and very high yields. This variety [...]
Auto Pineapple Glue - Advanced Seeds
Auto Pineapple Glue by Advanced Seeds is an auto-flowering plant created from a cross between [...]
Lemon OG Candy Auto - Philosopher Seeds
Alchimia is glad to present Lemon OG Candy auto-flowering version, one of Philosopher Seeds' star varie [...]
Fat Bastard Auto - Blimburn Seeds
Alchimia is pleased to present Fat Bastard Auto by Blimburn Seeds, an auto-flowering strain developed to offer an easy to grow, productive, very fragrant, and equa [...]
Auto Critical Lemon CBD - Advanced Seeds
Alchimia is glad to present Critical Lemon CBD Auto by Advanced Seeds, a hybrid with a complete cycle of about 75 days that offers a 1:1 CBD-THC ratio. Now availab [...]
Chaos Cake Auto - Anesia Seeds
Alchimia is pleased to present Chaos Cake Auto, a high-yielding auto-flowering cannabis strain with high THC content, sweet berry flavours, and excellent suitability for extraction [...]
Sensi Skunk Auto - Sensi Seeds
Sensi Seeds presents the autoflowering version of the Sensi Skunk variety , a compact and quick flowering strain that produces great h [...]
Banana Purple Punch Auto - Fast Buds
Alchimia is glad to present Banana Purple Punch Auto by Fast Buds Seed, one of the auto-flowering plants with the highest THC concentration up to 30% [...]
Auto Strawberry Gum - Advanced Seeds
Alchimia is glad to present the Strawberry Gum auto-flowering version by Advanced Seeds, a Sativa dominant hybrid characterised by a sweet and fruity strawberry candy aroma [...]
Auto Gorilla Blue - Advanced Seeds
Auto Gorilla Blue from Advanced Seeds is an automatic feminised hybrid created from two high quality strains of great impact with European and Spa [...]
C.Banana Auto - Philosopher Seeds
Philosopher Seeds is pleased to present its new auto-flowering C.Banana. This strain is renowned for [...]
Amnesia Haze Auto - Barneys Farm
Alchimia is glad to present Amnesia Haze Auto by Barney's Farm, the automatic version of the legendary [...]
Mexican Airlines from the Fast Buds Company is an autoflowering cannabis strain created for Sativa lovers. It comes from the cross between two landrace lines, Mexican [...]
Alchimia is pleased to present Apricot Auto by Fast Buds, a modern auto-flowering strain encounter between a [...]
Tropicanna Poison XL Auto - Sweet Seeds
Alchimia is happy to present Tropicanna Poison XL Auto by Sweet Seeds, a new auto-flowering strain belonging to the Red family. It is the auto version of [...]
Fast Buds presents the new Guava Auto marijuana strain, a sweet and fruity genetics ideal for all novice growers or those who cannot keep a close [...]
Blueberry Zkittlez Auto - Sensi Seeds
Alchimia is pleased to present Blueberry Zkittlez Auto by Sensi Seeds, an easy-to-grow auto-flowering cannabis plant with sweet and fruity aromas, a euphoric high [...]
Glue Gelato Auto - Barneys Farm
We are happy to offer Barney's Farm Glue Gelato Auto, a hybrid with the best Made in USA genetics on the market. Now available online in our catalogue of autoflowe [...]
Auto Bruce Banner XXL - Advanced Seeds
Alchimia is happy to present Auto Bruce Banner XXL by Advanced Seeds, the automatic version of [...]
Gorilla Cookies Auto - Fast Buds
Alchimiaweb is pleased to present Gorilla Cookies Auto by Fast Buds, a cross between two very popular genetics that produces a plant at the level of the great vari [...]
Purple Lemonade Auto - Fast Buds
Fast Buds Seeds presents Purple Lemonade, the most advanced genetics of this seed bank. This auto-flowering cannabis variety offers abundant, powerful and colourful harvests. It i [...]
Red Banana Berry Double XL Auto - Growers Choice
Alchimia is glad to present Red Banana Berry Double XL Auto by Growers Choice, an auto-flowering plant with a total life cycle of about 10 weeks, abundant producti [...]
As we've already mentioned, autoflowering or automatic varieties don't depend on photoperiod, or in other words, they don't respond to the light cycle. Their flowering begins regardless of the number of hours of direct light they receive, and they usually begin to flower three or four weeks after germination.
Who are they ideal for?
What advantages do they offer?
Marijuana growers often choose autoflowering seeds because of their faster life cycle and because, by producing smaller plants, they are much more discreet from the eyes of neighbors and passersby.
Autoflowering marijuana is also a good solution for growing in places with light pollution, where photoperiod-dependent seeds (feminized or regular) never flower, such as on a balcony or terrace with a nearby light source that interrupts the nighttime cycle by lengthening the daylight hours (a streetlight, for example). Autoflowering strains do guarantee a harvest in these cases.
Finally, because they do not depend on photoperiod, many growers take advantage of spaces in the mother room or closet where the photoperiod is 18/6 to grow them, obtaining an extra harvest.
Autoflowering seeds can be grown at any time of year, but to optimize yield, it is recommended to sow them between spring and late summer to take advantage of maximum sunlight hours and good temperatures (minimums above 18ºC) and always in a location with a minimum of 5-6 hours of direct sunlight.
It's worth noting that the time from seed planting to harvest takes 7 to 12 weeks (depending on genetics), and growing 3 to 4 crops per year is possible. Many growers plant autos in spring to enjoy their buds while they wait for the fall harvest of photoperiod-dependent varieties.
Fertilizers for autoflowering marijuana plants differ from those for photoperiod plants, as flowering and growth occur almost simultaneously. They are also generally more sensitive to ionic fertilizers and more affected by excesses of certain nutrients.
The auto-flowering characteristic comes from a cannabis subspecies called Ruderalis. Russian botanist Janischewski described this subspecies in 1924 based on specimens from Siberia.
They are native to the extreme climates of Northern Europe and Asia (Siberia, Central Russia, etc.), where plant life cycles must be faster. In these harsh climates, the periods for optimal plant growth are very short, so the ruderalis subspecies likely adapted by reducing the time it takes to complete its life cycle.
There are several theories regarding the origin of the first hybrids with the autoflowering gene. It is rumored that it was created at the University of Mississippi as part of a state program to produce legal marijuana, although this is not known for certain, as no documentation has been found on the subject. There are also theories about its Canadian origin, where in the 1980s an amateur grower noticed that some of his plants flowered in mid-August while the rest did so in October. Sensi Seeds offered Ruderalis varieties in its catalog, but not all phenotypes were 100% autoflowering.
What is much clearer is that the origin of the first autoflowering strains (seeds) available for purchase was created by a grower who called himself The Joint Doctor. His first autoflowering strain was created from a variety called "Mexican Rudy," the origin of which is unclear.
It was a fast-flowering strain, but very low-yielding and very short. He crossed it with a Northern Lights #2 specimen. That first generation was crossed with the indica strain "William's Wonder." This second batch produced male plants that began flowering immediately. Using the pollen from these male plants to cross them with other strains, he obtained the first autoflowering marijuana seeds. After several experiments, in the sixth generation, he found a plant he liked and introduced it to the cannabis seed market under the name "Lowryder," creating his own seed bank called Dr. Choice.
Initially, the Lowryder strain was unappealing to growers because it was very low-yielding and had low THC and cannabinoid levels. However, some growers were impressed by the potential of autoflowering seeds for faster, more discreet crops.
Some famous growers, such as Donny Danko, popularized its cultivation. Magazines like High Times and specialized talks on cannabis topics popularized its cultivation, thus encouraging research and the creation of new varieties that would improve production and concentrations of cannabinoids and terpenes. The Joint Doctor himself introduced new automatic varieties to the market, such as Lowryder #2, Chronic Ryder, Diesel Ryder, and Easy Ryder.
Over time, large autoflowering varieties appeared; the Buddha Seeds bank was a pioneer with varieties such as Magnum or Deimos, of the first so-called XXL Autos.
It is best to germinate them normally (on kitchen paper or germination plugs) but plant them directly in the final pot, without intermediate transplants.
Typically between 8 and 10 weeks from germination, although some can take up to 12 weeks if they have sativa-dominant genetics.
Yes, they're ideal for indoor use with artificial light, as they're independent of photoperiod lighting. You can keep them at 18/6 throughout the growing season and still get fast, high-quality harvests.
