High THC Strains

There are 46 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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Banana (Zamnesia Seeds) Feminized

From the sun-drenched altitudes of the Santa Cruz mountains in California comes Zamnesia’s Banana, one of the most potent strains available. The offspring of OG Kush and Banana ensures fruity, fierce intoxication with energetic passion and relaxed euphoria. Her mouth-wateringly sweet Banana flavour with hints of lemon and pepper makes for an incredibly tasty, yet smooth smoke.

(163)
£22.29 £20.06
In stock

Girl Scout Cookies (Zamnesia Seeds) Feminized

Girl Scout Cookies is an American hybrid taking Europe by storm. This strain combines the finest Cookie genetics, culminating in an unprecedented and deliciously powerful new variety. Its uplifting, cerebral high will relax the body, and its potent, high-yielding buds will come in full force in just 8-9 weeks of flowering.

(100)
£24.01 £21.61
In stock

GG#4 Auto (FastBuds) feminized

GG#4 Auto by FastBuds is a spectacular autoflower that shines with incredible resin production, very high potency, and a superb taste. This autoflowering variant of the award-winning GG #4 is just the right strain if want top-quality buds at harvest time, but appreciate the ease and convenience of an autoflower!

(320)
£30.88
In stock

Critical Kush (Barney's Farm) feminized

Critical Kush by Barney's Farm is a very successful cross between Critical Mass, itself a hybrid of Afghani x Skunk #1, and OG Kush, a Northern Californian strain with Chemdawg and Pakistani Kush heritage. This impressive marriage ultimately results in an indica-dominant smoke that induces a strong stone, making it a great choice for relaxing and medicinal purposes.

(138)
£31.71
In stock

Liberty Haze (Barney's Farm) feminized

High yield, extremely high THC content approaching 25% (confirmed in lab tests) and short flowering period of just 8 to 9 weeks - Liberty Haze by Barney's Farm is as close to the ideal cannabis strain as it gets.

(61)
£27.17
In stock

Girl Scout Cookies Auto (FastBuds) feminized

Growers seeking the best US autoflowering genetics have just found their perfect match. Girl Scout Cookies Auto, the absolute killer-strain from the West Coast, is now conquering Europe. This exceptional hybrid has an autoflowering life cycle of 8-9 weeks and yields up to 500-650g/m², or 70-300g per plant. THC levels are skyrocketing up to 22%. Order while stocks last and get baked!

(63)
£30.88
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)
£18.44
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)
£34.31
In stock

Cali Cookies (BSB Genetics) feminized

Girl Scout Cookies is one of most sought-after strains of all times. No wonder, the Californian girl scores with sky-high THC levels and an awesome taste. Cali Cookies is BSB Genetics’ fantastic version of this award-winning strain. Get ready for a truly out-of-this world euphoric high and a mouth-watering chocolate/minty flavour!

(4)
£25.73
In stock

Boy Scout Cookies (Kalashnikov Seeds) Feminized

What a mix! The breeders at Kalashnikov Seeds took the legendary Girl Scout Cookies from the US West Coast and paired her with the Russian Kubanskiy Ubiyza for this spectacular “double hit” named Boy Scout Cookies. This worldly combo of genetics scores with crazy-high amounts of THC and a very powerful indica effect. Yet, she is super easy to grow, so even new cultivators can expect great...

(4)
£25.73
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!

(16)
£38.60
In stock

Larry Bird Kush (Zamnesia Seeds) feminized

This legendary strain by Zamnesia is named after Larry Bird, the famous Boston Celtics basketball player. The nearly perfect hybrid (50/50), made from a Sunset Sherbert and a Girl Scout Cookies Thin Mint phenotype shines with a fantastic aroma that is sweet, tangy, and minty, and a great high that is relaxing yet wonderfully upbeat and mood lifting.

(44)
£24.01 £21.61
In stock

Green Gelato (Royal Queen Seeds) Feminized

Perhaps one of the dankest and tastiest Cookies hybrids, Green Gelato by Royal Queen Seeds reigns in a new era of connoisseur cannabis. The delicious Thin Mint Cookies and the mouth-watering Sunset Sherbet, arguably the best-tasting Cookies genetics from the SF Bay area, come together in what is one of the most luscious dessert cannabis strains that you can grow today.

(68)
£27.87
In stock

Zkittlez Auto (FastBuds) feminized

Zkittlez Auto by FastBuds is the perfect autoflowering version of the hyped US strain. Expect massive colas in only 8–9 weeks from seed. Her high is perfect for all kind of situations. You can go partying after toking this strain or relax and watch movies. Whatever you do, you will be accompanied by her super sweet, candy-like scent and taste. You will never want to smoke anything else!

(28)
£30.88
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)
£18.78
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)
£39.45
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)
£19.73
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)
£22.30
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)
£18.78
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)
£24.02
In stock

Gelato (Zamnesia Seeds) feminized

Supreme dankness never tasted so good. Zamnesia Seeds presents Gelato, a strapping indica-dominant strain that stands tall in the grow room and unleashes a high of epically smooth proportions. Unlike some other Gelato variants on the market, our version is infused with the ultra-potent Wedding Cake to give consumers a little something extra to fall in love with.

(109)
£22.29 £20.06
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.

(134)
£18.00 £16.20
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)
£84.91
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.

(3)
£18.78
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