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The Strongest THC Strains Available Today


The Strongest

THC Strains Available Today


If you read any of the annual reports compiled by NIDA (National Institute on Drug Abuse), cannabis strains continue to get stronger, particularly if you happen to measure the strength or potency according to THC (tetrahydrocannabinol) levels; the main psychoactive component in cannabis.

In 2003, THC content in cannabis was 6.4% in contrast to 0.72% in the mid-70s. This higher potency has mainly been courtesy of a higher focus on sinsemilla production – the top part of unfertilised female cannabis plants, which contain the highest THC levels.

Cannabis strain production methods in recent years have contributed to increased potency – growers today handpick strains that have the highest active compound levels – one of which is THC.

In the 1960s and 70s, finding cannabis with a 10% THC level or more was considered a rarity. Today, fortunately, many strains have THC levels that exceed 20% and often touch the 30% mark.

In your quest to seek the strongest, most ultimate and purest high – all of the above is good news, really good news. If you’ve ever wondered what the strongest THC marijuana strains are today, we’ve put them together for you in this article.

However, before we get to ‘the goods’, let’s give you a quick backdrop on what THC is and how it generally works:

What THC is and How it Gets You High

THC is the most active of compounds found in the cannabis plant – it is also the most psychoactive, which means the higher the THC count, the more feelings of elation and euphoria you will experience.

Depending on the strain’s genetics and the conditions it was grown in, high-THC cannabis can induce feelings of deep relaxation, and in some cases, even paranoia. However, this can vary from person to person.

Other psychological effects may include intense sensory perception, higher cognitive abilities, altered time perception, a sense of utter exhilaration, talkativeness, and of course, major appetite stimulation.

From a medical standpoint, high-THC cannabis may cure anxiety and insomnia, and act as an anti-depressant as well as anti-inflammatory.

No matter how you’re planning to use cannabis, here are currently the strongest THC strains available as we know it:

Top Strongest THC Strains in Existence Today

Cannabis trains are getting more potent year by year, as seedbanks continue to roll out their latest creations. Here are our picks (in no particular order) for the strongest THC strains currently available.

We should warn you, however, that you might want to start with a few tentative hits to determine your tolerance level before going all out.

Gorilla Glue

Not to be confused with the actual glue brand, Gorilla Glue cannabis was accidently discovered by two farmers while their Chem Sis plants produced hermaphrodite, and pollinated a Sour Dubb plant in the process. The ‘jolly accident’ led to the birth of the Gorilla Glue THC strain.

The indica-dominant strain is reported to have THC levels between 24-30%, among the highest potency level ever recorded in a THC strain. It’s also been reported that breeders have fondly given it the name, owing to how sticky the buds are.

Give it about ten weeks after seeding, and the strain will produce a respectable yield which packs plenty of THC and resin.

Nova OG (32% THC)

Lab-tested with a mind-boggling 32% THC content, Nova OG is currently among the most potent THC strains known to man. Also an indica-dominant strain like Gorilla Glue, Nova is known for its immense flower production and offers an unbelievable sensory experience to match.

You’ll surely appreciate the rich, citrusy smell and the sweet and pungent taste. Grow it outdoors and you’re looking at 650gr flower production per plant – indoor production will typically yield about 500gt/m2.

King Tut

Inspired by the 18th dynasty Egyptian pharaoh, Tutankhamun, King Tut is among the most potent sativa strains currently in existence. With THC levels hovering around 25-30%, its effects can be best described as ‘energising’ and ‘speedy’.

Ironically enough, King Tut is made from Pyramid Seeds and has been classified by experts as a cross between an unknown strain and the AK-47 strain. If you’re a beginner, you need to tread lightly around King Tut, given its sheer strength and overall impact.

The strain flowers from the seed in 8 weeks and since it doesn’t grow too long indoors, you won’t have to worry about the size. It typically produces 500gr/m2 of flower per plant.

Venom OG

Thanks to the breeders at Rare Dankness, Venom OG is a cross-strain between the Poison OG and Rare Darkness #1 strain, also produced by the same breeders.

One glance at the Venom OG buds – not too big and clustered together – are a dead giveaway of its indica genetics. While this cannabis strain boasts anywhere between 19-23% THC, it is very easy for new beginners to grow – the hybrid strain typically grows to a medium size while the indica genetics give it the ability to combat mould and disease. The plant can easily thrive in a warm outdoor environment.

Girl Scout Cookies

This 26% THC strain has had a long history rife with lawsuits, hip-hop and drama. Suitable for both indoor and outdoor cultivation, this is one of the best strains to come out of California.

The plant typically reaches about a metre’s height indoors, while producing anywhere between 450 and 500gr/m2. However, should you choose to grow it in warmer outdoor climates similar to its native California birthplace, the strain can reach nearly 2 metres in height and yield between 425 and 475gr per plant.

Liberty Haze

Liberty Haze is an even hybrid between G13 and Chem Dawg 91, which takes about 8 weeks to flower properly. Apart from its 25% THC potency, its most notable feature is the strong and prominent kolas which produce stunning yields indoors and outdoors as well.

The taste is pungent and citrusy while the effects can be described as instant and euphoric.

Bruce Banner #3

The mind-numbing ‘out of this world’ strain boasts THC levels upwards of 30% and takes its name from the scientist/Hulk, who turns into the green superhero as we know him today. We’re not sure if the strain was also exposed to radioactive material, but you may be in for one amazing experience after consuming this.

Rich and citrusy in taste, with effects described as relaxing and creative; Bruce Banner #3 can grow quite tall and produces buds in abundance, even when grown indoors. Flowering time sits around 8-9 weeks, with indoor yields being approximately 800gr/m2 and outdoors being 1000gr/plant.

Amnesia Haze

This blend of exotic cerebral sativas is known for its uplifting properties and high THC levels which typically hover around 20-22%. Boasting a tropical citrus flavour and spicy musk aromas, Amnesia Haze can take up to 12 weeks to flower.

Definitely among the ‘feel good’ cannabis available today, the experience is euphoric and mood elevating. Indoor yields typically produce 600-650gr/m2 while outdoor ones will produce about 650-700gr/plant.


Chemdawg, a pure sativa titan, is said to be a strain with rather mysterious genetics. Speculation has it that it’s a cross between Thai landraces and Nepalese. The strain has been gauged at around 15-20% THC and packs a respectable cerebral punch.

According to one report, however, a special type of chemdawg flower known as phenotype registered a stunning 32% THC.

Characterised by a funky diesel smell and thick, earthy smoke which can often be harsh, chemdawg users have reported a ‘thoughtful’ high accompanied by giddiness which often sparks interesting conversations.

Super Silver Haze

After cross-breeding staple strains like Haze, Northern Lights and Skunk, the Super Silver Haze strain was born – a widely popular sativa strain among cannabis users with THC levels consistently hovering around 20%.

The strain got its name mainly due to its sticky blanket of trichomes and boasts a non-stop body high, which complements its creative and energising properties. Some users have described the flavour as a piney undertone that seamlessly mingles with sweet, citrusy notes; others have described Super Silver Haze as having a sharp and rather cheesy tang to it.

Discovered first in Amsterdam in the late 90s, SSH offers a high that is strong, yet allows users to maintain clearheaded focus.

White Widow

Notoriously known for its unbelievable high resin production, White Widow is a sativa-dominant hybrid which boasts powerful and energising effects.

Even though this potent strain registers a meek 13.5% THC, some lab-tested samples have registered around 30% THC presence.

White Widow is known for having an ammonia-like scent which tends to remind one of earthy pine; the taste is aptly earthy and somewhat floral. However, what it may lack in flavour, it more than makes up for it through its fast-acting cerebral effects.

Strawberry Banana

If you’ve ever had the Banana Kush or Bubble Gum strain, then you’d be quick to identify with this strain, because it is, in fact, an evenly balanced hybrid of the two.

Boasting a strong smell and a fruity taste, Strawberry Banana strains can produce THC levels anywhere between 20% and 26%. Flowering takes about 9 weeks when grown indoors and yield 500gr/per plant for every square metre.

Final Thoughts on Highest THC Strains

There you have it – some of the highest THC cannabis strains as we know it. The next time you want to enjoy a deep and engaging conversation with someone, need higher concentration levels for an upcoming exam or simply want to relax and let loose, give these high-strength THC strains a try to take that train of thought to the next level.


Not only do we have one of the most comprehensive libraries of cannabis seeds in the world, we now offer a diverse range of cannabis related goods for you to enjoy including storage products, clothing and books.

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