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Best Auto Flowering Cannabis Seeds

Auto-Flowering Cannabis Seeds

Top 10 Best Autoflowering Seeds

Maybe you’ve written off auto-flowering seeds because you’ve heard that their yields are low, their phenotypes erratic and their highs less potent than those of their light-dependent sisters. Perhaps that was once true, but many breeders have been hard at work and they have produced what may sound like a miracle: high yielding, hard hitting, reliable auto-flowering seeds. It is time to give autos another chance. We have the current, 2018 Top Ten Auto-Flowering Seeds to help point you in the right direction, but first let’s review a little…

What are auto-flowering cannabis seeds?

Auto-flowering seeds are not light dependent for flowering. They germinate, shoot up a few leaves and start setting flowers, without you fussing over their light schedules.

Huh. That’s weird. How did that come about?

All auto-flowering seeds are the result of crossing our well-known and much loved Sativa and Indica plants with the somewhat less popular Ruderalis strains. Ruderalis is a type of cannabis that evolved to thrive in the 18-24 hour daylight of summers in Northern Russia and the Northern parts of Eastern Europe. There the summer days are long, sometimes endless, and by the time they start to shorten it is far too cold for a plant to be making flowers.

Ruderalis Wild

As you probably know our normal and familiar cannabis plants require a switch from 24 hours of light to 12 in order to stimulate flowering, without which they just veg and veg. If wild Ruderalis followed this example, all its flowers would freeze before setting seed. So it switched to a time schedule, instead of a light schedule, producing flowers as early as 3 weeks after germinating.

What that means for you in the grow room:

  • Faster flowering=shorter wait for the harvest
  • No need for separate vegging and flowering rooms
  • Plants of different ages can all be grown together, leading to:
  • A CONSTANT supply of marijuana

So why have I heard that they aren’t all that great?

The flaws in auto-flowering seeds come from their roadside origins. The reason you haven’t smoked any pure Ruderalis is simple - it is the ditchiest of ditch weed. Hardy, compact, resilient and frankly, boring. The THC content of Ruderalis strains tends to be low, as are the yields and the highs are weak and lack the psychedelic effects so many of us seek. These traits showed in the early autos- they were weaker than their sister strains and their yields were lower. The ease and speed of growing simply didn’t make up for their lack of oomph, or compensate for the small harvests.

But… Breeders are pretty good at what they do.

Auto-flowering seeds have been around for awhile now, and the breeders have gotten savvy. With intensive breeding, they are now whipping out auto seeds that produce anywhere from 500-1000g/m2 and will put you on the couch for hours.

How to grow your auto seeds:

Auto-flowering plants tend to be small (though there are exceptions, check out Lemon Haze Auto below) and do well in high density grow systems like Sea of Green. They can also thrive in containers, but don’t like to be transplanted. Germinate them in their final pots (1-2 gallons works great).

Top 10 Best Autoflowering Feminized Seeds


Easy Ryder Autoflowering

Indica/Sativa14-16% THCMedium

Afghan Kush Ryder Auto Fem

Indica/Ruderalis22% THC100-150 g/m2

Northern Lights Auto-Flowering Fem

Indica/Ruderalis20% THC30-50 g/plant

Heavyweight – Fast and Vast Auto Fem

80% Indica, 20% Sativa17-19% THC600-800 g/m2

Cash Crop Auto-Flowering

Indica DominantUp to 22% THC550 g/m2

Jack Herer Auto Seeds

30% Indica, 50% Sativa, 20% RuderalisMedium80-100 g/plant

Auto White Widow Feminized

Indica, Sativa & Ruderalis17% THC425-550 g/m2

Pandora Autoflowering Feminized

70% Indica, 20% Sativa, 10% Ruderalis15-18% THC400 g/m2

Lemon Haze Auto Feminized

Sativa Dominant, Indica, RuderalisHighup to 150 g per plant

THC Bomb Autoflowering Feminized

Indica, Sativa20%+ THC550-650 g/m2

SOG Auto

One of the great advantages of auto seeds is the possibility of staggering your planting for a continuous crop in the same space. Each time you harvest a bud or remove a male (they tend to show 2-3 weeks after germinating) plant a new seed. No need to change the light; most autos do best on 18 hours of light a day from germ to harvest.For the biggest yields, you do have to pay attention to feeding. It is important to switch from veg stage nutrients to flowering nutrients at about 4 weeks after germination or as soon as you see flowers starting to form.Most autos perform beautifully outside, often giving higher yields than their indoor counterparts. The Ruderalis genetics lend these strains a degree of hardiness; they are often mold resistant and able to handle fluctuating temperatures and odd watering schedules better than their pure Indica and Sativa relatives.

So you’re ready to give autos a try?

You really should. The intense breeding programs of the last few years have produced some really remarkable strains. These are autos that you would think were purely Indica/Sativa, if it weren’t for the fact that they grow FASTER and EASIER than any light dependent seeds you’ve tried.

To sum up the auto-flowering seeds…

Auto-flowering cannabis has finally made the transition from great idea to great reality. It took a long time. The first auto seeds, the original Lowryder by The Joint Doctor, came out around 2003. We are twelve years and hundreds of plant generations in to auto breeding, and we are finally seeing the plants of our dreams. Thanks to the tough, adaptable genetics of the wild Ruderalis, growers everywhere can now have the pleasure of growing fast, heavy yielding, sweet smoking cannabis without the hassle of having two grow rooms. So ditch the light schedules and give our favorite auto-flowering seeds a try:

2018 Top 10 Autoflowering Seeds

#1 The Joint Doctor - Easy Ryder Autoflowering

Best For: EASY! Multiple Harvests Outdoors, Good Yield

Joint Doctor Easy Ryder Auto

This is the strain to buy if you are just starting out with auto-flowering plants. It simply doesn’t get any easier to grow than Easy Ryder. Indoors she will produce well in just about any light conditions. For the highest yields, 20 hours of light, 4 of dark during the entire cycle works best. Outdoors plant some seeds every 2-3 weeks until 8 weeks before your first frost to get a continual harvest.Under the best light conditions, Easy Ryder offers a solid yield for an auto-flowering strain. It is the best of its parent strains- fruity aroma from the Joint Doctor’s Lowryder #2 coupled with the growth, high resin production and pleasant, motivating cerebral high of the Vision-AK47. If you are new to the auto-flowering game, the Easy Ryder is a great place to start.
  • Type : Ruderalis/Indica/Sativa
  • Height : Small
  • Flowering time : 8-9 weeks
  • Awards won : none
  • Yield : Medium
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : EASY
  • THC level : 14-16%

For Similar Strains check out:

#2 World of Seeds - Afghan Kush Ryder Auto Fem

Best For: Fast, Stinky, Incredibly potent

World of Seeds Afghan Kush Ryder

A seed that will grow nearly anywhere. 22% THC. A knockout mental high that is completely narcotic. World of Seeds’ Afghan Kush Ryder is the perfect choice for the true Indica lover.While the seeds are easy to grow for the greenest of beginners, the final product is for experienced tokers only. She will knock you flat with her deliciously pungent smoke. The potent sedative effects of this strain make her a hit with many medicinal users.She is typically a small plant (around 80 cm), though some growers have reported greater heights when growing outdoors. Don’t let her small size trick you into thinking you can hide her away anywhere- Afghan Kush Ryder has a powerful skunky odor that will give her away every time.This is a wildly popular strain that has earned every bit of its fame. If you haven’t tried it yet, today is the day to get your order in.
  • Type : Indica/ Ruderalis
  • Height : Medium
  • Flowering time : 7-8 weeks
  • Awards won : None
  • Yield : 100-150 g/m2 indoors
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : Easy
  • THC level : 22%

For Similar Strains check out:

#3 Vision – Northern Lights Auto-Flowering Fem

Best For: EASIEST to Grow, Narcotic High

Vision Northern Lights Auto

Vision Seeds Northern Lights has long been considered one of the easiest plants to grow. It grows anywhere, is incredibly forgiving of fertilizer and light condition faux pas, AND delivers a powerful high. Well, Vision Seeds just made this beautiful strain even better with the introduction of Northern Lights Auto!A cross between the original Northern Lights and a high performing Mexican Ruderalis, Northern Lights Auto is about as easy as it gets. She goes from seed to smoke in 8 short weeks, has a high flower to leaf ratio and tolerates a beginner’s mistakes with grace.Her taste is mild but her smoke is dense. She will hit you mind and body with a deep, lethargic and intensely relaxing high. For ease of growth coupled with fantastic Indica effects, Northern Lights Auto is your girl.
  • Type : Indica/Ruderalis
  • Height : 100-130 cm
  • Flowering time : 7-8 weeks
  • Awards won : None
  • Yield : 30-50 g/plant
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : EASY
  • THC level : 20%

For Similar Strains check out:

#4 Heavyweight – Fast and Vast Auto Fem

Best For: HIGH Yield, Fast Flowering, Mellow High

Heavy Weight Fast and Vast Auto

If you have been waiting for an auto strain that can really produce, your wait is over. Heavyweight’s Fast and Vast has finally achieved that which has been lacking in most auto-flowering strains until now- YIELD. Producing up to 800 g/m2, Fast and Vast can hold her own against most non-auto seeds.Producing huge buds in as few as 7 weeks, Fast and Vast sounds too good to be true. But it gets better- Heavyweight has created speed and yield without sacrificing quality. The smoke is sweet and spicy; the high comes on quick and hard and leaves you completely mellow and relaxed.If you have avoided autos in the past, now is the time to give this auto a try. With Fast and Vast Auto, auto-flowering seeds have finally broken out into true competition with their light dependent sisters.
  • Type : 80% Indica, 20% Sativa
  • Height : One meter
  • Flowering time : 7-8 weeks
  • Awards won : None
  • Yield : 600-800 g/m2
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : Easy
  • THC level : 17-19%
  • CBD level : 0.8%

For Similar Strains check out:

#5 Cream of the Crop - Cash Crop Auto-Flowering

Best For: Money does Grow on Trees!

Cash Crop Auto

A true “cash crop” of auto seeds, this strain from Cream of the Crop is a high yielding, sweet smoking, easy growing plant with great potential for both home and commercial growers. While she is slightly slower than some of the other autos, taking about 70 days to produce, she makes up for it with huge, taut colas so big they often need support in the last week or two.The taste is sweet and skunky; the high is cerebral and stunning. The buds are tight, compact and covered with golden dust. The dense colas and tight leaf structure make for great oil production as well.With big yields, uncomplicated growing and a delicious high that is going to be loved by medical and recreational users alike, Cash Crop is an obvious winner.
  • Type : Indica Dominant
  • Height : Medium
  • Flowering time : 10 weeks
  • Awards won : None
  • Yield : 550 g/m2
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : Easy
  • THC level : Up to 22%

For Similar Strains check out:

#6 Green House - Jack Herer Auto Seeds

Best For: Balanced High, Effective Pain Relief

Jack Herer Auto

A new release from Green House Seeds, Jack Herer Auto has all the beauty of its father strain coupled with the ease of an auto. Jack Herer, winner of the 1994 High Times Cannabis Cup, is widely acknowledged as one of the best strains out there, and has sired many current Sativa favorites.In creating an auto version of Jack Herer, Green House Seeds has managed to preserve the best qualities of the original, while creating an easy to grow, nearly bomb proof plant that flowers with anywhere from 12-18 hours of light a day.The smoke is perfectly smooth. The high comes on immediately with a deep body stone that massages away aches and pains. The head high is clear, lucid and motivating. Jack Herer Auto gently balances mind and body, reducing anxiety, relieving pain and leaving you energized and calm. A beautiful high true to its roots, in a package that couldn’t be easier to grow.
  • Type : 30% Indica, 50% Sativa, 20% Ruderalis
  • Height : 80-100 cm
  • Flowering time : 7-9 weeks
  • Awards won : None
  • Yield : 80-100 g/plant
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : Easy
  • THC level : Medium

For Similar Strains check out:

#7 Pyramid – Auto White Widow – Auto Fem

Best For: Mind and Body High, Just like the Original!

Auto White Widow

The White Widow… perhaps one of the most well-known and well-loved strains in the world. This is an auto version of our old friend from Pyramid Seeds. They have done an uncanny job of retaining the quality of the original while cutting the flowering time by 25-30%.Auto White Widow grows significantly smaller than her sister, but produces the same compact, resin coated buds that inspired the name. The high is that delightful hybrid balance of mind and body effects that made her so famous in the first place. She tastes sweet as candy.An easy to grow, reliable automatic version of an old favorite. If you have held off growing the Widow because of her size, give the Auto White Widow a try. She is just as tasty and a little easier to work with.
  • Type : Indica, Sativa and Ruderalis
  • Height : 60-90 cm
  • Flowering time : 60-68 days
  • Awards won : None
  • Yield : 425-550 g/m2
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : Easy
  • THC level : 17%

For Similar Strains check out:

#8 Paradise – Pandora Autoflowering Feminized

Best For: Long Lasting Medicinal Stone, Easy and Fast

Paradise Pandora Auto

Paradise Seeds makes the claim that Pandora is the best auto-flowering strain in the world. They just may be right. Pandora is easy to grow, fast to flower, consistent in yield and delivers a powerful Indica stone.Unlike many autos, Pandora’s leaf to calyx ratio makes her incredibly easy to trim. Her buds are long and compact with lots of resin. She grows fast and is a light feeder, able to thrive indoors and out.The stone is heavy and powerful, but with a Sativa shot of lucidity. Pandora will give you a strong, long lasting, medicinal effect that is heavy but won’t fog your mind.Is it the best auto in the world? You’ll have to try it and let us know!
  • Type : 70% Indica, 20% Sativa, 10% Ruderalis
  • Height : 0.9-1.2 meters
  • Flowering time : 60-65 days
  • Awards won : Highlife Cannabis Cup Amsterdam 2012 (2nd Autoflowering)
  • Yield : 400 g/m2
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : Easy
  • THC level : 15-18%

For Similar Strains check out:

#9 Emerald Triangle - Lemon Haze Auto Fem

Best For: Upbeat high, Easy Outdoor Grow

Lemon Haze Auto

Sweet smelling and delicious! Everything about Lemon Haze is clear, crisp and open. She shows her Sativa dominance in her height, ranginess and long internodes. A big girl, she likes to be fed! Low Stress Training is a great option to keep her under control, otherwise grow her outside where she will thrive.Lemony goodness dominates the high as well as the tangy taste of this strain. For the recreational user the hit gives a bright, creative boost, while medicinal users will enjoy relief from migraines and symptoms of PTSD.A reliable auto, Lemon Haze is easy to grow as long as you have the room. If you are looking for a bright, clean high and a grow room full of crisp lemon smells, Lemon Haze is the plant for you.
  • Type : Sativa Dominant, Indica, Ruderalis
  • Height : Tall
  • Flowering time : 6 weeks
  • Awards won : None
  • Yield : up to 150 g per plant
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : Easy
  • THC level : High

For Similar Strains check out:

#10 Bomb – THC Bomb Autoflowering Feminized

Best For: Easy to grow, Incredibly potent, High yields

Bomb THC Auto

THC Bomb Auto is the result of careful breeding at Bomb Seeds to produce an auto-flowering, feminized version of their reknowned THC Bomb that has all the power and potency of the original. A fast growing, citrus scented and smooth smoking strain, Bomb Auto will also put you on the couch for hours.The Bomb Auto is an easy grower. She thrives in soil, and gets an extra lemony flavor. In a hydroponic set-up she grows even faster, producing massive buds with record speed. You would never know she is an auto! You can even put her outside and get delicious, low maintenance results.While the Bomb Auto is suitable for the most novice grower, her buds will satisfy the most experienced smoker. The stone is heavy and settles on your body like a thick blanket. Medicinal users will find her a great relief from insomnia, stress and muscle pain. With her high yields and speedy finish time, Bomb Auto shows us just how far auto-flowering seeds have come.
  • Type : Indica, Sativa
  • Height : 65-90 cm
  • Flowering time : 7-9 weeks
  • Awards won : None
  • Yield : Very High (550-650 g/m2)
  • Feminized : Yes
  • Autoflowering : Yes
  • Growth difficulty : Easy
  • THC level : 20%+

For Similar Strains check out:

90 thoughts on “Best Auto Flowering Cannabis Seeds

  1. Garrbear420 says:

    My favorite is attitude seed bank, but I tried some single seed website that sells cheap seeds and they were shit, also a popular were I’m from is bcseedbank but I’m from canada so that’s most likely why

  2. Peruvian Beginer says:

    Can someone give me a good seed bank or website to buy for the first time that is actually has a good reputation and does not scam? and how far away do the lights have to be from the autoflowers at all time?, thank you.
    Oh yeah, I have a tour agency in Cusco where Machu Picchu is located, if anyone comes, I will have not just good tours to offer but good weed too hahaha, contact me for any information, but please can someone answer to my questions please.

    • michaelnock88@yahoo.co.uk says:

      In my experience it is always a good Idea to have a look who’s been winning the Cannabis Cup over the many years people have been doing this like a science. I personally use Positronics though you could try The Sensi Seed Bank, both previous Cup winners with many more to choose from.
      As far as the distance of the lights, it depends on their wattage, but a general rule of thumb is to put your hand under it and feel when the heat gets close to your own body temperature and that for a 600w Sodium would be between 12″ and 18″ / 300mm and 450mm.

  3. clarkie boy says:

    Hey help please I have 2 autos they are both northern lights they sprouted 2 weeks ago and are already around 4 inches under a 250MH. Problem is there are sighns of budding already there are lots of little white hairs!!!!! Is this a problem or is this normal??? Will they be ready sooner than expected?? Maybe just less?? Please help

  4. Tiff says:

    Good article, and extra thanks to Bushman for the info on seeds, just what I needed to know :o)

  5. TAW says:

    will i get better yield with 24hours under a T5 or 12/12 under 1000watt HPS, with a sugar mango auto?

    • br4nd0n says:

      Hps i think is the best u should keep the light on for 18 hrs maybe 16 to save money anything below that will stunt growth t5 isnt good for flowering phaze

      • b says:

        hey i was woundering i have a berry ryder iv been growing for 4 weeks now on 24/0 sense they come up it been budding for about a week or so should i switch the lights to 12/12 and let it finish i run 450 cfl

  6. Gareth says:

    MH is best but HPS will do. I’ve used HPS from start to finish with good results.

    • br4nd0n says:

      Hps i think is the best u should keep the light on for 18 hrs maybe 16 to save money anything below that will stunt growth t5 isnt good for flowering phaze

  7. mr.420 says:

    wait are u guys serious? u can actually get so many seeds from one single plant?
    im thinking about ordering from seedsman bought 10 seeds , dont know which strain yet, but since im really new to this , i’m thinking to plant all 10 seeds in a not too big closet of mine, and if any male show up i just let them pollinate the females.
    i have a Hps 250 watt lamp, i might get another one if recommended by any one. when u guys say up to hundreds of seeds per plant, are u being serious whit that shit? it’s just that i was really thinking about 50 seeds per plant or something like that…

    • CannaBus says:

      HA Ha,I was going to post but michaelnock88 nailed it. That’s not to say there won’t come a time when you’ll want to pollinate a budd.

    • Darold says:

      Hey, good to find soomnee who agrees with me. GMTA.

      • michaelnock88@yahoo.co.uk says:

        How much square ft do you have?
        With a 250w you will get good growth from around 2-3 square ft.
        A 400w around 3-4 square ft.
        A 600w around 4-5.
        I have used 3 600w sodium over a growing space of 2.5 meters square to a very good results. There are better ways by using those light movers which move the light down a rail attached to the ceiling.
        As far as trying to make your own seeds, this is something that makes little sense to me for varying reasons.
        Firstly it comes down to, do you really want 100s of seeds?
        Secondly the THC starts to degrade at a certain point, you can tell by looking at the crystals under at least a 20x zoom microscope. They will go from being clear crystal balls into cloudy balls.
        Thirdly for some reason the seeds that you get from home grown seeds, seems to be either sub standard or prone to things like hermapharidites or mutated leaf structure and things like that.
        So unless you don’t mind weed with seeds in every individual bud and then spend months growing substandard plants that could flower themselves, go for it.
        If it was me I’d find a good supplier and grow what you like to smoke.

  8. Ben says:

    Do you have to use MH for the first few weeks? Or can you use HPS from the beginning?

  9. Mousy says:

    I have two auto white widows in the closet under 400watt hps my plants sprouted 7 weeks ago. They started flowering in the 4th week and im still not done with flowering. Im growing them under dwc and they are really fat and have tons of branches. Is it normal for autos to take this long?

  10. Pot Head says:

    They create flowers just like other cannabis plants. The reason they flower automatically is because they come from northern lattitudes where summers are short with incredibly long days. These strains are adapted to these conditions where plants need to flower and spread seed quickly before the return of winter.

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