High THC autoflower strains: it's possible, and these are the best ones

Autoflower strains had a lot of bad rep back in the day because of their low yields and lower cannabinoid content. They were even considered inferior to photoperiod seeds by most of the cannabis community because of it. But that’s no longer true since autoflower genetics have improved over the past decade.

Nowadays, we have high-yielding and high-THC autoflowering seeds. We even have super autoflowers strains, which are bred to be just as potent and grow as large as their photoperiod counterpart. In a way, these super autoflowers are regular plants with all the convenience of an autoflower.

Bruce Banner autoflower

If you want a potent, uplifting high, look no further. Bruce Banner is known for its intense high that makes people happy and euphoric. Bruce Banner Auto is no different. It delivers the same high thanks to its high THC content of up to 25%.

Bruce Banner autoflower seeds

The Bruce Banner strain is one of our signature strains, a perfect blend of OG Kush and Strawberry Diesel that is based on the original prize-winning Bruce Banner.

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The only difference is how much easier this super autoflower is to cultivate compared to the photoperiod version. Its autoflowering cannabis seeds produce plants with shorter sizes that make it ideal to be grown indoors. Its shorter growing cycle lets you grow batches of this high-THC autoflower back to back. You can grow your own Bruce Banner from autoflower seeds and feminized ones.

Bruce Banner cultivar profile

Blue Dream autoflower

Blue Dream Auto is recognized as a super autoflower because of its high THC content of up to 21%. But it isn’t one of this list’s most potent autoflower strains. This is because this sativa-dominant hybrid is more known for its calming high.

Blue Dream autoflower seeds

The Blue Dream Autoflower is a cross between the hardy ruderalis and the sativa-dominant hybrid, Blue Dream. Its Blue dream parent is 80% sativa but known for its relaxing vibes.

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The autoflowering marijuana seeds of Blue Dream are pretty straightforward when it comes to growing them. They don’t require much maintenance to reward you with a decent yield of 5 to 15 ounces per plant. But there is no harm in providing an extra bit of TLC to your plants in the form of marijuana fertilizers and plant protectors. You can start growing your Blue Dream from autoflower or feminized seeds.

Blue Dream cultivar profile

Zkittlez autoflower

Zkittlez is an Indica-dominant strain known for its flavorful buds and relaxing highs. Those traits carry over in its autoflowering variant, including its high THC levels of up to 23%.

Zkittlez autoflower seeds

Zkittlez comes from a delicious combination of Grape Ape and Grapefruit strains. The genetics lead to an indica-dominant strain with an impressively fruity flavor.

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Despite its 70/30 split, this super auto delivers a balanced high by providing a euphoric head high and a relaxing body high. You’ll find the overall experience smooth, especially since there’s no crash at the end when the high dies down.

Reflecting its smooth experience, growing Zkittlez Auto is also smooth sailing from seed to harvest. Its compact size makes for good indoor cultivation, and its resistance to mold and other diseases is a bonus for first-time growers.

You can start growing this easy strain from autoflower seeds or feminized ones.

Zkittlez cultivar profile

Gorilla Glue (GG4) autoflower

Gorilla Glue, or GG4, is a hybrid strain that produces potent and sticky buds with a THC content of up to 26%. It provides a relaxing body high that helps remove stress and replaces it with euphoria, which is surprising for a 50/50 hybrid.

GG4 autoflower seeds

With GG4 aka Gorilla Glue aka Original Glue autoflower seeds, your harvest is ready extremely fast. Autoflower seeds produce compact plants, making this the perfect strain to grow in smaller grow sites.

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Like its effects, the way GG4 grows is indica-leaning. It produces compact and bushy plants ideal for indoor growers. GG4 plants are also resilient against temperature fluctuations, a trait that proves advantageous for outdoor growers.

Start growing your own Gorilla Glue plants from autoflower or feminized seeds.

GG4 cultivar profile

Banana Kush autoflower

Banana Kush is an Indica-dominant hybrid strain that crosses Ghost OG, Skunk Haze, and potentially even OG Kush. Its high THC levels of up to 21% boost this strain’s uplifting and euphoric head high, which is surprising considering its Indica-dominance. That’s not to say it fails to provide a relaxing body buzz.

Banana Kush autoflower seeds

This fruity hybrid strain was first bred in the Golden State and quickly developed a reputation for providing a low-pressure, euphoric high.

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The only part of Banana Kush that isn’t full of surprises is how it grows. Both its photoperiod and autoflower plants are easy to grow, with its autoflowering counterpart being naturally easier to cultivate.

One thing to keep in mind, though, is your plants’ growth. Since Banana Kush Auto tends to grow bushy, you must trim the leaves to maintain stable airflow. This prevents pests like mold and mildew from growing on your plants because of high humidity and stagnant air created by bushy plants.

And by downloading the Plant Care Guide, you can learn how to tend your plants properly. And while you’re there, you can also buy Banana Kush autoflower or feminized seeds to start your next grow.

Banana Kush cultivar profile

Girl Scout Cookies autoflower

Unlike its unassuming and sweet name, Girl Scout Cookies is known for delivering a strong high. The same can be said with the buds from its autoflowering variant, which can have THC levels of up to 21%. Add the fact that this super auto strain is easy to grow, and it’s no wonder it’s a prime pick for many.

Girl Scout Cookies autoflower seeds

Girl Scout Cookies autoflower seeds are a hybrid of Durban Poison and OG Kush mixed with ruderalis traits to make it autoflowering. Its lovely aroma of sweet earthiness provides a delightful, euphoric high that leaves you completely relaxed.

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Part of what makes GSC one of the easiest autoflowering cannabis strains to grow is its natural resistance that fights off mold, pests, and other insects. This makes GSC auto the ideal strain for first-time growers who want to cultivate a potent yet flavorful cannabis strain. You can grow Girl Scout Cookies from either feminized and autoflower seeds.

Girl Scout Cookies cultivar profile

Runtz autoflower

The hallmark of autoflowering cannabis seeds is how easy they are to cultivate, and there’s no doubt that Runtz passes, being one of the easiest high-THC autoflowers to grow. Outside of producing hardy and resilient plants, Runtz is also versatile. It’s a strain that thrives in both indoor and outdoor setups.

Runtz autoflower seeds

Runtz strain of Cannabis first appeared in 2017 at the Santa Rosa Emerald Cup. Since then, it has won multiple awards, including the 2020 People's choice award for best indica flower.

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Its compact size can make for great indoor plants, but its resilience to diseases and pests can allow it to thrive as an outdoor plant. All while providing the bare minimum of maintenance.

Easiest Autoflowers Strains to Grow

Nowadays, the weather is uncertain. We have no idea how bad the coming winter of 2021 may be. Some say it may be colder than last year, making growing marijuana outdoors even more unpredictable than normal. However, there are autoflower strains that thrive in such harsh climates. A great examp…

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But Runtz isn’t just a hardy and versatile strain. It’s also one of the highest THC autoflower strains, with a THC content of up to 29%. Its potent head high will leave you feeling euphoric, while the body high will ease you into a calm state of bliss. Start growing this potent strain with Runtz autoflower or feminized seeds.

Runtz cultivar profile

Do-Si-Dos autoflower

Do-si-dos Autoflower seeds have the highest THC on this list. With a THC content of up to 30%, it can rival Godfather OG, which has THC levels that average around 30-35%. It’s important to note, though, that while Do-si-dos can reach 30%, the average for this strain is only around 24-28%. That doesn’t change the fact that Do-si-dos is one of the more potent autoflower seeds on this list.

Do-Si-Dos autoflower seeds

This autoflowering indica-dominant strain (70:30% ratio) delivers THC levels up to 30% and is easier to grow than photoperiod seeds.

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The potent buds of Do-Si-Dos contain more than a high cannabinoid content. It’s also full of flavorful terpenes that give the buds a sweet and earthy flavor with an intense aroma.

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When it comes to growing, Do-Si-Dos auto is, like many autoflower strains, easy. It can thrive in any setup, whether it be indoors or outdoors. The only concern would be the pungent smell that the plants give off. Start growing this potent and pungent strain by getting autoflower or feminized seeds.

Do-Si-Dos cultivar profile

Gelato autoflower

Gelato was made by crossing Thin Mints, a Girl Scout Cookies phenotype, and Sunset Sherbert. Interestingly enough, one of the parents for Sunset Sherbert was also GSC. This is why it shouldn’t surprise anyone that Gelato is as flavorful as it is.

Gelato autoflower seeds

Gelato autoflowering plants produce small, well-balanced indica/sativa hybrids that stay compact and bushy. It's the perfect choice for a shorter growing space.

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But Gelato inherited more than just GSC’s sweet and earthy taste. It’s also every bit as potent. With THC levels of up to 21%, Gelato packs quite the mean punch. Even for experts with high tolerance, this strain is known for giving an intense high.

The only thing that isn’t intense about Gelato Auto is how it grows. This super autoflower produces compact and unassuming plants. You wouldn’t think this indica-dominant had buds that could knock your socks off.

If you want to try growing Gelato for yourself, ILGM has both feminized and autoflower seeds of this strain.

Gelato cultivar profile

Sour Diesel autoflower

Sour Diesel Autoflower cannabis seeds fix many of the issues that regular feminized Sour Diesel seeds have, from the tall plants it produces to the difficulty in cultivating them. The best part, though, is what it doesn’t change – the potency. Sour Diesel Auto produces buds equal to its photoperiod self, meaning you can enjoy buds with a THC level of up to 20% without putting in as much work.

Sour Diesel autoflower seeds

Sour Diesel autoflower seeds grow a weed that is exceptionally dank and delivers a psychedelic, energetic euphoria.

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As an autoflower, Sour Diesel has a much shorter growing cycle compared to its photoperiod self. This allows you to harvest much earlier than if you had planted feminized seeds of this sativa-dominant strain.

You can start growing Sour Diesel from autoflower seeds, or if you want a challenge, grow it from feminized seeds.

Sour Diesel cultivar profile

Conclusion

Autoflowering strains used to get a lot of bad press back in the day, and it’s good to see that’s no longer the case. They have serious potential, and what better proof of that than super autoflowers? If you’re one of the few still skeptical about autoflowers, now is the best time to try and grow a batch for yourself.

Before we send you off into the world of growing autoflowers, though, we'd like to answer some of the most frequently asked questions we received. Hopefully, that'll take away the final reservations you might still have about growing autoflowers for yourself.

What’s the strongest autoflower in the world?

Many people agree that the strongest autoflower strain in the world is Gorilla Cookies. But a case could be made that Godfather OG can also hold the title since it’s also recognized as the strongest weed strain in the world.

What is the average THC percentage in autoflower?

Nowadays, the average THC content of any autoflower on the market is around 25%. This is impressive if you consider that back in the 1990s, the average was only 4%.

What is a super autoflower?

A super autoflower is the latest in the line of strain development. It’s an autoflower bred to be as potent and large as its photoperiod counterpart.

It’s a fun experience to try something new, even if that something new is much easier than what you’re used to. Because part of what makes growing fun is how we can make it easier on ourselves. Doing so might even let you experiment with a few growing techniques. You can find a few in The Marijuana Grow Bible.

Happy growing!