High THC Strains

There are 34 products.

The “Best of the Best” when it comes to THC content! Strains that are high in THC, the psychoactive compound contained in cannabis, can deliver the most potent smoke for the ultimate in relaxation or powerful uplifting euphoria. Some cannabis strains with a particular high THC content can even make for outright psychedelic experiences!

But high THC content doesn’t just mean that these cannabis varieties can be optimal for recreational users who seek the ultimate for chilling and relaxation. These strains rich in THC can also be a good choice for those users who need very potent medicine that can help with pain relief and other medical conditions.

The High THC strains category here in the Zamnesia web shop features these select strains that are known for their particular high THC content. Find your favourite High THC strain in no time here at Zamnesia!

Feeling overwhelmed by all the different cannabis strains out there? Use the Cannabis Seedfinder and find the strain that best suits your growing needs in 6 simple steps.

High THC Strains - Click here for more info
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Bruce Banner 3 (Zamnesia Seeds) Feminized

Just like the mighty green fist from The Hulk, Bruce Banner #3 will smash you in the head with an incredibly powerful effect that is creative, euphoric, and energising. This heavy-hitter will transform you into a superhero. Hulk-smash procrastination and enjoy new levels of inspiration and productivity; Bruce Banner #3 is redefining the meaning of wake and bake!

(124)
£24.06 £20.45
In stock

Siberian Haze (Kalashnikov Seeds) feminized

The oldschool breeders at Kalashnikov Seeds hailing from the South of Russia don’t do half-assed things. With more than 15 years of experience in creating excellent AK-47 cross breeds, they are among the top Russian cannabis breeders who are now getting also popular here in the West. Their Siberian Haze is a super-potent Sativa thanks to the powerful Haze, AK-47 and Amnesia genetics!

(4)
£18.48
In stock

Gorilla #4 (BSB Genetics) feminized

BSB Genetics’ Gorilla #4 (formerly GG #4) is a super potent couch-locker, that makes for an intensely strong high, that will keep you glued on your couch with a smile on your face. The strain produces tons of sticky, resinous buds with an intensive aroma. Despite the high quality of her buds, she’s easy to grow indoors or outdoors and suitable for growers of all experience levels.

(11)
£34.38
In stock

Bruce Banner (BSB Genetics) Feminized

The “strongest strain on earth” is now available from BSB Genetics! Award-winning Bruce Banner will smash you in the head with a powerful, energising, and creative high. With some phenotypes clocking in at an unreal 32% THC, you won’t need more than one hit to say goodbye to procrastination and hello to new levels of inspiration and motivation!

(17)
£38.68
In stock

Monkey Glue (Growers Choice) Feminized

This is the Growers Choice version of the famous Gorilla Glue #4, one of the strongest cannabis strains on the market. Created by accident via pollination of a Sour Dubb by a hermaphrodite Chem Sister, Monkey Glue brings extremely high THC levels, a superb aroma, and insane amounts of sticky resin to the table. Plus, the strain is easy to grow, despite her many impressive qualities.

(27)
£25.78
In stock

Wedding Cake (Original Sensible) feminized

Wedding Cake is a modern strain on the market that's proven to be extremely popular. It's sweet and potent, boasting a THC content of 25% or higher. Due to such high potency, Wedding Cake is great to use medicinally, recreationally, or however you like! It also grows quickly and delivers fantastic yields indoors and out.

(12)
£18.82
In stock

Mamacita’s Cookies (Ministry of Cannabis) feminized

Mamacita’s Cookies is the result of crossing two of America’s favourite strains. Indica-dominant with an impressive 25% THC, this hybrid is robust and very powerful.

(2)
£39.53
In stock

God's Glue (Ministry Of Cannabis) feminized

God's Glue by Ministry of Cannabis makes use of the famous genetics of Gorilla Glue, both in seed and clone form, to create a super potent cross of two Gorilla Glues. The indica-dominant strain expresses the usual potency of this famous US performer, which can reach up to 30% THC in some plants. Prepare for heavy effects with a sensational flavour!

(11)
£19.77
In stock

GG#4 Auto (BSF Seeds) feminized

Famous for its potency, effect, and production, BSF Seeds presents GG#4 Auto, an autoflowering variant of the popular West Coast cannabis celebrity. This top hybrid will delight both novice and seasoned cultivators with her robust growth and splendid yield. Get ready for some super-sticky bud!

(3)
£22.35
In stock

Alien Gorilla (Original Sensible) feminized

Alien Gorilla is a strain for when you fancy something different. Pull this creature out of the stash jar during the evening for a heavy-hitting indica high that will ensure restful sleep.

(1)
£18.82
In stock

GG#4 (BSF Seeds) Feminized

It would be a hard task trying to find a strain with flowers more beautiful than those produced by GG#4. This strain offers rich tastes and a long-lasting cerebral effect.

(11)
£24.06
In stock

Purple Punch (Zamnesia Seeds) feminized

Purple Punch by Zamnesia Seeds is a dreamy indica that shines with an exquisite taste and an incredibly relaxing effect. Despite her compact size, this almost pure indica is very easy to grow and can deliver great yields.

(140)
£18.04 £15.33
In stock

Original Glue | GG4S1 (GGStrains) Feminized

Original Glue (GG4S1) is a masterful creation from the breeders at GGStrains. THC levels of up to 30% and a delicious terpene profile have made her soar in popularity. This is the official, original strain formerly known as Gorilla Glue.

(5)
£85.09
In stock

Bruce Cookies (Original Sensible) feminized

Bruce Cookies is derived from two heavy-hitters, and hits pretty hard herself. Original Sensible took everything you love about Bruce Banner #3 and Do-Si-Dos OG to make a strong, sweet, and potent strain sure to give you a good time, every time. She's easy to grow and maintain, and her yields will keep you going for a long time. If you like indicas, there is very little not to like here.

(4)
£18.82
In stock

Gorilla Cookies (Original Sensible) feminized

Gorilla Cookies by Original Sensible is a massively powerful cannabis strain. With THC levels rivalling the most potent hybrids on the market, she ensures a spectacular high that is as relaxing as it is euphoric. As if that’s not enough, the strain also scores with monstrous yields and fast growth.

(2)
£18.82
In stock

Wedding Cookies (Original Sensible) feminized

We now pronounce you... stoned! If you're looking for a strain with a full-bodied flavour and a hard-hitting high, look no further than Wedding Cookies. This easy to grow plant churns out an ample load of tight, potent buds. With some seriously impressive parentage, there is very little not to love about Wedding Cookies.

(5)
£18.82
In stock

Blackberry Nuggets (BSB Genetics) feminized

Calling BSB Genetics’ Blackberry Nuggets powerful may be an understatement given that this girl measures an earth-shattering 33%(!) of THC. This ultra-potent indica is also scoring high with extreme resin production and she tops it all up with a fabulous fruity flavour profile. A superb choice for cannabis connoisseurs who love it stroooong and a perfect strain for concentrates!

(14)
£38.68
In stock

Lava Cake (Zamnesia Seeds) feminized

Looking for a unique, boutique strain to add to your garden? Zamnesia's feminized Lava Cake delivers exceptional flavours, a super relaxing high, and great grow traits that make it easy to cultivate indoors and out. Whether you're a rookie grower or a seasoned weed connoisseur, Lava Cake is sure to satisfy.

(34)
£22.34 £18.99
In stock

Apple Fritter (Zamnesia Seeds) feminized

Zamnesia's Apple Fritter will boost your mood, relax your body, and kick-start your mind. Oh, and did we mention that it smells of warm, homemade apple pastries? If you're looking for a potent, high-yielding strain with solid US genetics, make some room in your grow for Apple Fritter.

(70)
£22.34 £18.99
In stock

Mack and Crack (Seedstockers Superior)

A true THC titan, Mack and Crack offers insane potency suited to veteran stoners. Not only content on providing great effects, users can expect awesome citrus flavours and easygoing plants. Available in both photoperiod feminized and regular variants, Mack and Crack is the ideal choice for any grower with a penchant for racy sativas.

(3)
£34.29
In stock

Royal Choco (Amsterdam Genetics) feminized

Royal Choco is a delicious hybrid cross of K2 and Chocolope. The result is a unique cultivar with an aroma that perfectly balances sweet and spicy overtones with an earthy base and hints of fresh pine and hops. Her effects are just as balanced, relaxing the body and mind with a hearty kick of up to 24% THC.

£25.78
In stock

Fullgas! (Greenhouse Seeds) feminized

No time to slow down with Fullgas! Taking everything to the maximum, this strain delivers massive flavours, large yields, and huge effects. But before you have access to these amazing attributes, you've got to grow her. Thankfully, this is an effortless task. Just keep her in check with some basic maintenance, and you'll be rewarded with truly outstanding buds.

£34.38
In stock

Biscotti (Zamnesia Seeds) feminized

If you're shopping for a powerful indica that's packed full of flavour, look no further than Biscotti. Containing up to a whopping 25% THC and producing pronounced effects, this flavoursome lady is no slouch in the grow room either. With a little care, those who sow Biscotti seeds can count on excellent results come harvest time.

(54)
£22.34 £18.99
In stock

Apple Fritter (Royal Queen Seeds) feminized

Often chosen for its unique and scrumptious terpene profile, Apple Fritter by RQS truly is something special. Tasting like apple pastry, it will make you salivate when you open your stash jar to get a whiff. But that's not all that we can say about this variety; it also has loads of THC for euphoric and creativity-sparking effects.

£26.21
In stock

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A guide to high-THC strains

A guide to high-THC strains

Are you looking to purchase cannabis seeds with extreme THC levels? Well, you’re about to discover some of the best strains to suit your desires. However, before we introduce you to our superstar weed varieties, we think you’ll find this brief guide helpful for your cultivation endeavours. Below, find out the key benefits of growing strains loaded with THC, and how to raise them.

Benefits of strains with a high THC content

Why do growers choose to cultivate high-THC strains in the first place? Well, part of the answer is quite obvious: they contain more THC! Higher quantities of the psychoactive cannabinoid means it takes less plant material to experience equally potent effects. With weaker varieties, many experienced smokers might need a whole joint to feel suitably high, whereas with a high-THC strain, a single bong hit might suffice. Overall, a stash of high-THC flowers lasts longer. Those with a particularly high tolerance can also use them to make extremely powerful edibles and extracts to really scratch their itch.

Growing cannabis with higher THC levels

You might think that growing high-THC cannabis takes some kind of special approach—but you’d be mistaken. You can grow these plants in the same way as other varieties. Strains high in THC are innately “wired” to churn out much higher quantities of the cannabinoid. However, this doesn’t mean you can get away with taking shortcuts. Ultra-potent plants still depend on powerful lights, high-quality organic nutrients, and a mindful watering schedule to express their full genetic potential.

Buy the best high-THC genetics available

Do you want to use less of your stash every time you get high? Or maybe your favourite strains aren’t hitting like they used to? Well, what are you waiting for? High-THC strains from Zamnesia will take your experience to another level, without demanding any more work in the grow room or garden. To get you started on your journey, here are some of the strongest varieties you can get your hands on:

  • Bruce Banner 3: Brace yourself for THC levels of 27% and monster yields
  • Gorilla Glue: This beast contains 26% THC and fruity and earthy terpenes
  • Banana: Experience tropical vibes and THC levels of 28%
  • Larry Bird Kush: With a THC content of 26%, this strain will have you giggling
  • Wedding Cake Automatic: Prepare to enjoy 24% THC after a rapid growing cycle