What Are Autoflowering Seeds?

Autoflowering seeds are exactly what they sound like—they flower on their own, no matter how much light they get. Unlike regular or photoperiod seeds that need you to switch up the light cycle to trigger flowering, these cultivars do their thing automatically, usually within 2–4 weeks of sprouting.

They’re super beginner-friendly and great if you’re short on space, time, or just want a quicker harvest. Most autoflowers stay compact too, which makes them perfect for growing indoors or keeping things low-key outside. And thanks to years of solid breeding, modern autoflowers are just as strong and flavorful as photoperiods.

Basically, if you want an easy grow with fast results, autoflowering seeds are where it’s at.

How Long Do Autoflowering Seeds Take From Seed To Harvest?

Most autoflowering seeds can be harvested after around 8 to 12 weeks.

Growing Autoflowering Seeds: Outdoor vs. Indoor

Growing autoflowers indoors or outdoors both have their perks—it just depends on your setup and goals.

Outdoors, autoflowers are great because they don’t care about light schedules. You can plant them pretty much anytime the weather’s decent, and they’ll do their thing. Since they have a short life cycle, you can squeeze in multiple harvests in one season. Just keep in mind they’re a little more sensitive to rough weather, so you’ll want to time things right and maybe give them some shelter if storms roll through.

Indoors, you’ve got full control—light, temps, airflow, all of it. Autoflowers don’t need a 12/12 light cycle to flower, so you can keep lights on 18–24 hours a day to help them bulk up faster. The shorter height also works in your favor if your space is limited. The main thing is making sure you don’t overdo it with nutrients or stress them out—they’re fast growers and don’t like being messed with too much.

Either way, autos are chill and low-maintenance. Indoor gives you control, outdoor gives you freedom. Both can bring solid results.

How Much Do Autoflowering Plants Yield?

Yields from autoflowering seeds can definitely hold their own these days, but they’re usually a bit smaller than what you’d get from photoperiod cultivars. On average, most indoor growers can expect around 1–5 ounces per plant, depending on the setup, light quality, and the genetics you’re working with.

Outdoors, yields can be a little higher—up to 6 ounces per plantespecially if you’re growing in big pots with good sunlight and decent soil. The key thing to remember is that autoflowers don’t get as big because they have a shorter life cycle, usually wrapping up in about 10 weeks. But what they lack in size, they make up for in speed and simplicity.

If you’re running a dialed-in indoor grow, you can boost your overall yield by growing multiple autoflowers in the same space instead of just one or two big plants. So while a single plant won’t give you a monster harvest, autoflowers can still be super efficient and totally worth it.

How Big Do Autoflowering Plants Get?

Autoflowering plants stay on the smaller side, which is a big part of their appeal. Most autos top out around 1 to 3 feet tall, though some can stretch a little taller depending on the genetics and growing conditions.

Their compact size makes them perfect if you’re tight on space, growing indoors, or just trying to keep things discreet. You can easily tuck a few into a small tent, balcony, or backyard corner without drawing much attention.

Even though they’re smaller, autoflowers still pack a punch. They focus on quick growth and efficient bud production instead of turning into towering trees. If you’re running multiple plants in a small area, their short stature actually works in your favor—you can fit more in and still get a solid harvest.

THC Levels: Autoflowers vs Regular Strains

Back in the day, autoflowers had a rep for being weaker—but that’s not the case anymore. Thanks to better breeding, a lot of autoflowering cultivars now hit THC levels that are just as strong as photoperiod strains. We’re talking 20% or more in a lot of cases.

The big difference used to be that autoflowers were crossed with ruderalis genetics, which naturally had low THC. But modern breeders figured out how to keep the autoflowering trait without sacrificing potency. So if you’re going for a strong high, you don’t have to write off autos anymore.

That said, photoperiod strains still give growers more control over how long the plant stays in each stage, which can sometimes mean bigger plants and heavier resin production. But for most people, today’s autos have more than enough strength to get the job done.

Showing 1–30 of 417 results

  • Buy 303 OG Autoflowering Feminized SeedsSingle 303 OG Autoflowering Feminized Seed
    303 OG Auto
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    303 OG Auto seeds grow into sturdy plants with classic OG flavors. Earthy, herbal, and a little spicy. Great for relaxing without getting totally couch-locked.

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  • Buy 3X Crazy Autoflowering Feminized Seeds
    3X Crazy Auto
    (171)
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    3X Crazy Auto blends OG Kush, Granddaddy Purple, and Bubba Kush into one smooth-hitting autoflower. Expect fruity flavors and a laid-back buzz with solid yields.

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  • 9 Pound Hammer Autoflowering SeedsBuy premium feminized 9 Pound Hammer Autoflowering Seeds pacific seed bank
    9 Pound Hammer Auto
    (99)
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    9 Pound Hammer Auto is a potent Indica-dominant strain with high THC content bred from popular parent strains Jack the Ripper, Hell’s Angel OG, and Gooberry. 9 Pound Hammer boasts a sweet, fruity aroma, dominated by grape with hints of lime for an exceptional flavor profile.

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  • Buy A-10 Autoflowering Feminized SeedsSingle A-10 Autoflowering Feminized Seeds
    A-10 Auto
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    The clever cross between Afghan and Thai landrace strains A-10 Auto is a potent marijuana hybrid that boasts more Indica than Sativa.  A chilled-out stoner experienced that is completely relaxed from head to toe.

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  • Buy Aberdeen Autoflowering Feminized SeedsFantastic Aberdeen Autoflowering Feminized Seeds
    Aberdeen Auto
    (148)
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    Grown in Canada originally, the Aberdeen Auto cannabis strain combines popular parent strains Jack the Ripper and Orange Velvet and is a variant of the Agent Orange strain. The mostly Sativa strain is well-known amongst cannabis users as an energetic buzz that will lift you off of the couch and into social events. It has been known to give users the giggles while cleansing the body and mind with a welcome euphoria and relaxation. The flavor of diesel and blue cheese closely matches that of its aroma. You can smell this strain long before you ever light it up. There are hints of menthol and citrus and a tangy aftertaste upon exhaling.

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  • Get Abusive OG Autoflowering Feminized SeedsSingle Abusive OG Autoflowering Feminized Seed
    Abusive OG Auto
    (17)
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    Believed to have been born and bred in the San Fernando Valley region of California, Abusive OG auto flowering cannabis has a rather mysterious lineage. The strain is also referred to as “Abusive OG Kush” or “LA Kush”. Being that the strain is Indica with zero Sativa, its effects lean more towards the laid-back and chilled side rather than the energized and creative side. The high starts with a cerebral buzz that makes the user feel happy and uplifted. Initially, you will feel motivated and focused, but that will eventually give way to a warm rush that hits the body and mind. This strain is best used post-work when you have zero responsibilities and can unwind after a long day. This is not the ideal bud for wake-and-bake sessions unless you have a day off. Abusive OG Auto has the ability to put you to bed after a few hits, and that is something that medicinal marijuana users really enjoy. The air will fill with lemony, skunky scents mixed with herbal green tea. The complexities of the flavor and aroma are a welcomed surprise to both users and growers.

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  • Plant Ace Killer OG Autoflowering Marijuana Seeds
    Ace Killer OG Auto
    (17)
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    Ace Killer OG Auto was created by combining the popular parent strains White Fire OG and King’s Kush. With a massive THC content, this strain is not recommended for beginners. The Sativa-dominant hybrid’s effects start with a euphoria that captivates their minds, promoting positive thoughts and creative thinking. Soon after, users will feel a warmth rush through their whole body and mind, ridding the user of tension, stress, and tight muscles. Ace Killer OG is recognizable from a distance with its diesel-like scent that also has a harmonious blend of sweet citrus and pine notes. When consumed, it delivers a smooth and pleasant smoke with complex flavors. The flavor combines elements of sweetness, spice, and a touch of herbal undertones and aftertaste. The overall experience is rich and enjoyable.

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    Buy Afghan Hawaiian Autoflowering Feminized SeedsFantastic Afghan Hawaiian Autoflowering Feminized Seeds
    Afghan Hawaiian Auto
    (16)
    $29.83$33.90
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    Experienced gardners will enjoy the challenge posed by Afghan Hawaii marijuana, an indica strain that boasts a nutty cheese aroma and sedatively soothing high.

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  • Buy Afghani Bullrider AutoFlowering Marijuana SeedsBuy premium feminized Buy Afghani Bullrider AutoFlowering Marijuana Seeds Pacific Seed Bank
    Afghani Bullrider Auto
    (11)
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    Afghani Bullrider Auto is a 100% Indica cultivar bred by Jef Tek in San Diego, descended from the legendary Afghani strain. Known for its chill, end-of-day effects and minimal Sativa traits, this rare cultivar is a favorite among seasoned smokers. It delivers classic earthy aromas with a sweet finish—and some pick up pine notes when smoked. It’s also known to bring on the munchies, so keep snacks close. With heavy THC levels and an elite lineage, it’s a solid pick for both connoisseurs and growers.

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  • Buy Afgooey Autoflowering Feminized SeedsFantastic Afgooey Autoflowering Feminized Seeds
    Afgooey Auto
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    Afgooey Auto traces its roots back to 1980s Northern California and comes from Afghani and Maui Haze genetics. This Indica-dominant hybrid delivers a full-body buzz with a creative spark from its Sativa side. It’s known for easing stress and quieting the mind while offering a warm, relaxing high. Flavors are earthy, piney, and woody with a smooth smoke, thanks to its Afghani and Haze lineage. The aroma leans a bit skunky but stays close to the flavor profile. If you want a chill nighttime cultivar to help you unwind, Afgooey Auto’s a solid pick.

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    Buy Agent Tangie Autoflowering Feminized SeedsFantastic Agent Tangie Autoflowering Feminized Seeds
    Agent Tangie Auto
    (11)
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    Agent Tangie Auto delivers bold citrus flavor and a strong tangerine aroma. A cross between Agent Orange and Tangie, this Sativa-dominant hybrid has a coffee-like kick that sparks focus and creativity. Its moderate THC level brings a balanced head-and-body buzz that fans love for wake-and-bake sessions. Expect an uplifting rush that settles into a productive groove—often with some giggles along the way. The fruity, skunky, and spicy scent matches the flavor, though the citrus stands out more on the tongue than in the nose.

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  • AK Autoflowering SeedsBuy premium AK Autoflowering Seeds Pacific Seed Bank
    AK Auto
    (20)
    $33.71
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    AK Auto cannabis seeds are one of the most awarded cultivars out there. Originally bred in the 1970s, some say the name comes from the AK-47 rifle, while others think “AK” stands for Afghan Kush and “47” was the original breeding number. This indica-dominant cultivar took off in the ‘90s when it hit the U.S. market and started getting used widely. It blends Colombian, Mexican, Thai, Ruderalis, and Afghani genetics to deliver a heady, long-lasting buzz that starts with a burst of energy and winds down into full-body relaxation. The THC is moderately high, and the flavor is a mix of sour, earthy, and floral notes. Thanks to its loud skunky scent, growers should give these plants plenty of space from nosy neighbors. Smokers keep coming back to AK Auto for that old-school funk and smooth finish.

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  • AK-48 Autoflowering SeedsBuy premium feminized AK-48 Autoflowering Seeds Pacific Seed Bank
    AK-48 Auto
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    If you like AK-47, you’ll probably love AK-48 Auto. This balanced hybrid brings both a head and body buzz, thanks to its high THC content. With roots in Colombian Gold, Thai, Mexican, and Afghani cultivars, AK-48 Auto is known for its uplifting and relaxing effects. Its sweet citrus flavor pairs with earthy, skunky notes, giving off that classic old-school vibe. Great for both day and night, it’s a go-to for those looking to unwind. You might even find yourself adding it to your regular rotation.

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  • shop the best alien bubba autoflowering marijuana seedsFantastic Alien Bubba Autoflowering Feminized Seeds
    Alien Bubba Auto
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    Alien Bubba Auto is an Indica-dominant hybrid made from Alien Bubba and Bubba Kush crossed with Ruderalis—built to please crowds and pack a punch. It starts with an upbeat, chatty high that’s great for social settings, then eases into a relaxed, sleepy finish. Expect a mix of mellow energy, deep relaxation, and plenty of laughs. It might be a bit much for beginners. The flavor leans floral and earthy, with a grassy aroma that sticks around. Seasoned smokers will enjoy its natural, terp-heavy profile.

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  • Buy Alien Kush Autoflowering Feminized SeedsSingle Alien Kush Autoflowering Feminized Seeds
    Alien Kush Auto
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    Alien Kush Auto is a mostly Indica cultivar made by crossing Tahoe OG, Alien Kush, and Ruderalis. It’s known for evening use, kicking off with a euphoric, energizing buzz before settling into deep relaxation. The aroma is strong and piney with sweet herbal notes, while the flavor leans spicy, earthy, and fresh on the exhale. It’s a go-to for clearing your head and mellowing out. This potent cultivar is also easier to grow than its parent strains, making it a favorite for growers and tokers alike.

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    Buy Alien Reunion Autoflowering Feminized SeedsFantastic Alien Reunion Autoflowering Feminized Seeds
    Alien Reunion Auto
    (108)
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    Alien Reunion Auto is an Indica-dominant hybrid made from Alien Dawg and Alien OG, so it’s no surprise it packs a punch. The high starts with an intense head rush from its sky-high THC, but when used lightly, it’s manageable. It kicks in with a wave of energy and creativity before shifting into full-body relaxation that’ll likely glue you to the couch. Many growers say it’s helpful for easing tension, aches, and stress. Flavor-wise, expect a skunky sweet-and-sour combo with fruity aftertastes. You’ll also catch notes of cheese, nuts, and a bit of diesel in both the flavor and aroma—this one’s loud before it’s even lit.

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  • Buy Alien Rift Autoflowering Feminized SeedsFantastic Alien Rift Autoflowering Feminized Seeds
    Alien Rift Auto
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    Alien Rift Auto is a rare Indica-dominant cultivar from the West Coast, made with genetics from Alien Abduction, Alien Dawg, and Alien OG. This Kush-family strain kicks off with a quick cerebral buzz—expect euphoria, clear-headed thinking, and a lift in mood. Once the high mellows, the body effects take over, easing tightness and helping you fully relax. Like most Kush strains, it’s best for evenings when you’re winding down. Alien Rift has a smooth, lemony flavor with a spicy kick and a bold skunky smell that’s almost energizing—but it’s not built for mornings, so skip it as a wake-and-bake.

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  • Buy Alien Technology Autoflowering Feminized SeedsFantastic Alien Technology Autoflowering Feminized Seeds
    Alien Technology Auto
    (10)
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    Alien Technology Auto has a rare lineage that traces back to the mountains of Afghanistan. While its exact parents are unknown, it likely carries Afghani Kush genetics, which show up in both its effects and flavor. This pure Indica hits hard and lasts a while—even with just a small amount. Expect a mix of calming, uplifting, and sedative effects that make it great for nighttime use or lazy days. It’s not your go-to for a wake-and-bake. The flavor is fruity and spicy, with a strong fruity-diesel aroma common in Afghani landrace cultivars. You’ll smell it well before you spark it.

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  • Buy American Kush Autoflowering Feminized SeedsFantastic American Kush Autoflowering Feminized Seeds
    American Kush Auto
    (15)
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    American Kush Auto is a powerful, Sativa-dominant cultivar with top-tier genetics from Pre-98 Bubba Kush and Sin City Kush. It’s stronger than your morning coffee—ideal for wake-and-bake sessions, workouts, or anything that needs a boost of energy and motivation. With its high THC content, seasoned users will love the mix of cerebral euphoria and uplifting physical effects. The flavor starts earthy with woody, sweet caramel notes and finishes with a refreshing citrus kick. You’ll smell its sweet, spicy, and herbal aroma before the first hit. Between its effects, bold flavor, and THC punch, American Kush Auto is a favorite among both smokers and growers.

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  • Amnesia Haze Autoflowering SeedsBuy premium feminized Amnesia Haze Autoflowering Seeds Pacific Seed Bank
    Amnesia Haze Auto
    (51)
    $32.97
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    Amnesia Haze Auto was first bred in the ‘90s by Hy-Pro Seeds in the Netherlands and quickly gained popularity after hitting the U.S. This Sativa-dominant hybrid mixes the original Amnesia Haze with a potent autoflowering variety, giving it high THC levels and a fast-acting, cerebral buzz. The high brings focus, happiness, and a light, psychedelic lift—great for daytime use without knocking you out. Its aroma and flavor lean earthy and citrusy, with notes of orange juice, champagne, and a peppery kick on the exhale. With its bold flavor, strong effects, and award-winning background, Amnesia Haze Auto is a go-to for anyone chasing a tasty, feel-good daytime smoke.

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  • Amnesia Lemon Fast Version Autoflowering SeedsBuy premium Amnesia Lemon Fast Version Autoflowering Seeds
    Amnesia Lemon Fast Version Auto
    (54)
    $34.03
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    Amnesia Lemon Auto (Fast Version) is a citrus-packed, energy-boosting cultivar made by crossing Amnesia Lemon with Ruderalis. Originally bred in the Netherlands, it gained major traction after winning the 2012 High Times Cannabis Cup and quickly found a following in Amsterdam coffee shops and U.S. markets. Known for its daytime effects, this strain delivers a clear-headed buzz that’s perfect for wake-and-bake sessions. Think of it like a strong cup of coffee—but with a psychoactive twist. The flavor is a zesty mix of lemon, citrus, earth, and spice, while the aroma hits hard with orange, pepper, and a musty kick. Crack open a nug and the whole room fills with its bold scent. Amnesia Lemon Auto is a solid choice for creatives or anyone looking to stay sharp, energized, and in the zone—whether you’re hitting a trail, your yoga mat, or your couch.

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  • Buy Ancient Kush Autoflowering Feminized SeedsSingle Ancient Kush Autoflowering Feminized Seed
    Ancient Kush Auto
    (12)
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    Ancient Kush Auto is an Indica-dominant hybrid with a mysterious background, but one thing’s clear—it delivers a solid, reliable buzz. Despite its Indica lean, the high brings a surprising boost of energy and creativity, making it a rare pick for wake-and-bake sessions. Its autoflowering nature comes from Ruderalis genetics, helping it grow quickly and easily. The flavor is minty and refreshing, while the aroma leans cheesy, skunky, and unmistakably old-school. It’s loud. Break apart a nug, and the scent floods the room. On the exhale, expect a bright citrusy aftertaste with a hit of lemon that lingers. Loved by true cannabis fans for its flavor, strength, and effect.

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  • plant Ancient OG Autoflowering Feminized Marijuana Seeds Bramptonorder Anesthesia Autoflowering Feminized Marijuana Seeds Brooks
    Ancient OG Auto
    (12)
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    Ancient OG Auto is an Indica-dominant cultivar bred by Bodhi Seeds, created by crossing Snow Lotus with an Iranian landrace and Ruderalis. Its effects are mellow, long-lasting, and perfect for winding down. The high starts with a euphoric, creative lift before melting into full-body relaxation and sleepiness—ideal for nighttime use. Expect the munchies, so have snacks on deck. The flavor and aroma blend pine, citrus, and earth, with subtle notes of mango and blueberry on the exhale. It’s smooth, aromatic, and easy to enjoy. No surprise this one took home the Autoflower World Cup in 2025—it’s become a must-have for fans of relaxing, flavorful cultivars.

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  • Single Anesthesia Autoflowering Feminized Seed
    Anesthesia Auto
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    Anesthesia Auto lives up to its name—it’s seriously strong and known to knock you out if you go too hard. Bred by Pyramid Seeds in Barcelona, this Indica-dominant cultivar comes from Northern Lights, Black Domina, and Ruderalis, giving it both heavy effects and autoflowering traits. The high kicks in fast with a wave of happiness before settling into a deep, meditative calm that’s perfect for nighttime use. The flavor hits with sweet and sour notes, followed by earthy, almost chemical undertones. Its aroma is loud and unmistakable, filling the room even before you light up. Old-school smokers and seasoned growers especially love it.

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  • Buy Appleberry Autoflowering Feminized SeedsFantastic Appleberry Autoflowering Feminized Seeds
    Appleberry Auto
    (12)
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    Appleberry Auto isn’t a breakfast cereal, but a fruity, Indica-dominant hybrid that’s perfect for winding down. Bred by Sumo Seeds in Amsterdam, this autoflowering cultivar combines Blueberry and White Widow, giving it a smooth, sweet flavor with hints of berry and floral notes. The high hits fast, starting with a strong cerebral buzz before melting into full-body relaxation. Great for nighttime use, it helps you unplug and chill after a long day.

    Appleberry Auto has earned serious cred in the cannabis community, taking home awards at the Emerald Cup and High Times Cannabis Cup from 2022 to 2024. If you’re looking for a flavorful, evening-friendly strain that’s easy to love, this one’s a solid pick.

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    Buy Aurora Borealis Autoflowering Feminized SeedsFantastic Aurora Borealis Autoflowering Feminized Seeds
    Aurora Borealis Auto
    (12)
    $25.82$34.43
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    Aurora Borealis Auto—aka “Aurora B Auto” or just “Aurora Auto”—is a balanced hybrid named after the Northern Lights and bred by the Flying Dutchmen in Amsterdam. A cross of Northern Lights #10, Skunk #1, and Ruderalis, this autoflowering cultivar delivers a smooth mix of clear-headed energy and deep body relaxation. The high starts off uplifting and giggly, making it great for social sessions, then gradually eases into a chill, sleepy vibe as the Indica side kicks in. The flavor mirrors the smell but adds a honey-like sweetness on the exhale, giving it a unique and memorable aftertaste.

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  • Auto OG Cheese Autoflowering SeedsBuy premium feminized Auto OG Cheese Autoflowering Seeds Pacific Seed Bank
    Auto OG Cheese Auto
    (15)
    $34.05
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    If you’re a fan of bold flavors—or just love anything cheesy—Auto OG Cheese might be right up your alley. This Indica-dominant autoflower is perfect for zoning out or easing into a slow yoga session. It relaxes the body while encouraging self-reflection and a happy, giggly mindset. The aroma is loud—pungent cheese blended with floral and pine—while the flavor leans skunky and funky with a sweet, smooth finish. If you’re not into strong cheese profiles, it might not be your thing. But for seasoned smokers and flavor chasers, Auto OG Cheese is a standout evening strain with unique character and serious chill.

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  • Buy Ayahuasca Purple Autoflowering Feminized SeedsFantastic Ayahuasca Purple Autoflowering Feminized Seeds
    Ayahuasca Purple Auto
    (13)
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    Ayahuasca Purple Auto is a rare, flavor-packed Indica created by crossing Master Kush, Ruderalis, and Red River Delta. Named after the famous psychedelic brew, this strain doesn’t send you into another dimension—but it will lock you into full-body relaxation with a euphoric, heady buzz. Best saved for nights when you’ve got nothing on your plate, it hits hard and spreads from the neck down like a warm, calming wave. Before you even break it up, the aroma hits with nutty tropical fruit and sweet floral notes. Once lit, it shifts from sweet to sour, with bursts of citrus and lavender in the mix. The flavor? Pure tropical candy—mango, papaya, and flowers all wrapped into one smooth, unforgettable smoke. Way more enjoyable than its bitter namesake, Ayahuasca Purple Auto is one of the tastiest buds out there.

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  • B-52 Autoflowering SeedsBuy premium feminized B-52 Autoflowering Seeds Pacific Seed Bank
    B-52 Auto
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    B-52 Auto is an Indica-dominant hybrid named after the iconic U.S. bomber—powerful, reliable, and built to last. Bred by Nirvana Seeds in Amsterdam, this strain brings together Skunk #1, Ruderalis, and Big Bud to deliver a potent, well-rounded experience. Despite its Indica lean, the high starts with an energetic, talkative buzz that slowly works its way down into a mellow body vibe—making it perfect for creatives who want focus without losing that laid-back edge. The aroma and flavor are classic: sweet, skunky, earthy, and a little woodsy. It’s dense, pungent, and full of that old-school charm cannabis fans love, with a modern kick of THC to match. If you’re into vintage weed flavors but want something that still hits hard and fast, B-52 Auto is a solid pick.

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    Buy Bakerstreet Autoflowering Feminized SeedsFantastic Bakerstreet Autoflowering Feminized Seeds
    Bakerstreet Auto
    (12)
    $26.35$32.94
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    Bakerstreet Auto is a pure Indica strain named after the iconic street from Sherlock Holmes lore, but there’s no mystery behind its roots. Bred in Canada and made with Hindu Kush and Ruderalis genetics, this autoflowering cultivar brings old-school landrace power with modern convenience. The high starts with a slight pressure around the eyes before settling into a deep, full-body calm that comes in steady waves. It’s not overly heady—this one’s all about physical relaxation and winding down. Expect to get sleepy, so save it for evenings when your only plan is the couch or bed. The aroma is rich and earthy, like sweet sandalwood, while the flavor brings a mix of sugary diesel, pine, sage, and a nutty finish. Smooth and flavorful without being overwhelming.

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Showing 1–30 of 417 products

What Are Autoflowering Seeds?

Autoflowering seeds are exactly what they sound like—they flower on their own, no matter how much light they get. Unlike regular or photoperiod seeds that need you to switch up the light cycle to trigger flowering, these cultivars do their thing automatically, usually within 2–4 weeks of sprouting.

They’re super beginner-friendly and great if you’re short on space, time, or just want a quicker harvest. Most autoflowers stay compact too, which makes them perfect for growing indoors or keeping things low-key outside. And thanks to years of solid breeding, modern autoflowers are just as strong and flavorful as photoperiods.

Basically, if you want an easy grow with fast results, autoflowering seeds are where it’s at.

How Long Do Autoflowering Seeds Take From Seed To Harvest?

Most autoflowering seeds can be harvested after around 8 to 12 weeks.

Growing Autoflowering Seeds: Outdoor vs. Indoor

Growing autoflowers indoors or outdoors both have their perks—it just depends on your setup and goals.

Outdoors, autoflowers are great because they don’t care about light schedules. You can plant them pretty much anytime the weather’s decent, and they’ll do their thing. Since they have a short life cycle, you can squeeze in multiple harvests in one season. Just keep in mind they’re a little more sensitive to rough weather, so you’ll want to time things right and maybe give them some shelter if storms roll through.

Indoors, you’ve got full control—light, temps, airflow, all of it. Autoflowers don’t need a 12/12 light cycle to flower, so you can keep lights on 18–24 hours a day to help them bulk up faster. The shorter height also works in your favor if your space is limited. The main thing is making sure you don’t overdo it with nutrients or stress them out—they’re fast growers and don’t like being messed with too much.

Either way, autos are chill and low-maintenance. Indoor gives you control, outdoor gives you freedom. Both can bring solid results.

How Much Do Autoflowering Plants Yield?

Yields from autoflowering seeds can definitely hold their own these days, but they’re usually a bit smaller than what you’d get from photoperiod cultivars. On average, most indoor growers can expect around 1–5 ounces per plant, depending on the setup, light quality, and the genetics you’re working with.

Outdoors, yields can be a little higher—up to 6 ounces per plantespecially if you’re growing in big pots with good sunlight and decent soil. The key thing to remember is that autoflowers don’t get as big because they have a shorter life cycle, usually wrapping up in about 10 weeks. But what they lack in size, they make up for in speed and simplicity.

If you’re running a dialed-in indoor grow, you can boost your overall yield by growing multiple autoflowers in the same space instead of just one or two big plants. So while a single plant won’t give you a monster harvest, autoflowers can still be super efficient and totally worth it.

How Big Do Autoflowering Plants Get?

Autoflowering plants stay on the smaller side, which is a big part of their appeal. Most autos top out around 1 to 3 feet tall, though some can stretch a little taller depending on the genetics and growing conditions.

Their compact size makes them perfect if you’re tight on space, growing indoors, or just trying to keep things discreet. You can easily tuck a few into a small tent, balcony, or backyard corner without drawing much attention.

Even though they’re smaller, autoflowers still pack a punch. They focus on quick growth and efficient bud production instead of turning into towering trees. If you’re running multiple plants in a small area, their short stature actually works in your favor—you can fit more in and still get a solid harvest.

THC Levels: Autoflowers vs Regular Strains

Back in the day, autoflowers had a rep for being weaker—but that’s not the case anymore. Thanks to better breeding, a lot of autoflowering cultivars now hit THC levels that are just as strong as photoperiod strains. We’re talking 20% or more in a lot of cases.

The big difference used to be that autoflowers were crossed with ruderalis genetics, which naturally had low THC. But modern breeders figured out how to keep the autoflowering trait without sacrificing potency. So if you’re going for a strong high, you don’t have to write off autos anymore.

That said, photoperiod strains still give growers more control over how long the plant stays in each stage, which can sometimes mean bigger plants and heavier resin production. But for most people, today’s autos have more than enough strength to get the job done.