High THC Strains

There are 95 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
Read more...
Read less
--
  • --
  • Best Reviewed
  • Most popular
  • Most reviews
  • Price: lowest first
  • Price: highest first
  • Product Name: A to Z
  • Product Name: Z to A
    • Filter By
    • Feminized
    • Autoflowering
    • Regular
    • Medical
products

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)
£23.91 £21.52
In stock

GG#4 (Zamnesia Seeds) feminized

The one and only GG#4 now exclusively available here at Zamnesia Seeds! This spectacularly potent and flavourful Indica which until recently was only available in the US doesn’t just make for incredible relaxation with a happy and uplifting effect. Her out-of-this-world potency makes GG#4 also an excellent strain for the treatment of chronic pains and other health conditions.

(261)
£22.20 £19.98
In stock

Royal Gorilla (Royal Queen Seeds) feminized

Calling the Royal Gorilla by Royal Queen Seeds a powerful hybrid may not do her justice when you know that her THC levels can reach an insanely high 27%. This ultra-potent strain that until now was only available in the US will deliver an outright spectacular high that despite her crazy potency is still balanced. Get ready for incredible relaxation together with a nice uplifting euphoria!

(93)
£8.54
In stock

Bruce Banner 3 (Original Sensible) Feminized

Fittingly named after Bruce Banner aka The Incredible Hulk, Bruce Banner #3 is one of the strongest strains on the planet. An incredible 30% in THC will give you a real surge of energetic euphoria, but with a very relaxing after-effect. But potency isn’t Bruce Banner #3’s only highlight: The strain is very productive and delights with an excellent fruity-diesel aroma and taste.

(63)
£23.76
In stock

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.

(168)
£22.20 £19.98
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.

(101)
£23.91 £21.52
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!

(321)
£84.57
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.

(141)
£31.58
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.

(64)
£27.06
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!

(64)
£84.57
In stock

Girl Scout Cookies (Cali Connection) feminized

The feminized Girl Scout Cookies by Cali Connection is a slow to moderate grower, but these fortune cookies are one of the most sought-after varieties today. Everybody wants to taste those buds the West Coast rappers brag about. This is no counterfeit crap or clone, this is the original from the Bay Area of San Francisco. This Thin Mint phenotype flowers for 55–63 days. Want some Cookies?

(9)
£81.15
In stock

L.A. Amnesia (Paradise Seeds) feminized

From start to finish L.A. Amnesia is a stunning strain. Vibrant during vegetation & excitingly top heavy during flowering these guaranteed girls are what it's all about. Resin overload with a smell & effect that keeps you coming back for more.

(20)
£22.21
In stock

Eleven Roses (Delicious Seeds) Feminized

Delicious Seeds claims that their latest creation Eleven Roses is possibly one of their best, and who would disagree? This undemanding indica shines with fast growth, a phenomenal taste and aroma, and some monster yields. Her delicious smoke contains up to a whopping 25% THC, making for an awesome indica stone that will last for a long time. Simply a dream for indica lovers!

(33)
£29.04
In stock

Bruce Banner III (Growers Choice) Feminized

Those into comic books will know Bruce Banner, the alter ego behind the Incredible Hulk. Aptly named after the green superhero, Bruce Banner is also a range of strains that became popular due to their insane potency and flavour. Bruce Banner III is one of the three phenotypes of Bruce Banner, scoring with a crazy amount of THC and a superb high that’s euphoric and relaxing all at the same...

(93)
£25.63
In stock

Gorilla Girl (Sweet Seeds) Feminized

Sweet Seeds' Gorilla Girl blends two of the most famous West Coast genetics into a fantastic new strain that shines with high THC levels, massive resin production, and an intense aroma. The slightly sativa-dominant hybrid (60% sativa) provides a balanced high and symptomatic relief.

(10)
£30.75
In stock

Amnesia Haze (Amsterdam Genetics) feminized

Amnesia Haze is a brand-new addition to Amsterdam Genetics’ range of strains. A top-favourite in the coffee shops of Amsterdam, this potent sativa-dominant hybrid has a fresh herbal aroma with hints of citrus. Thanks to a THC content up to 25% of THC she delivers a powerful psychedelic head buzz and makes a fabulous daytime smoke!

(17)
£21.36
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)
£34.17
In stock

Gelato 41 (Growers Choice) feminized

Gelato 41 by Growers Choice is a fantastic hybrid from the famed Cookie family of genetics. Her parents include a minty pheno of the popular Girl Scout Cookies on one side and a Sunshine Sherbet, which also is a heir to the Girl Scout Cookies throne on the other. This Californian girl doesn’t just delight with an amazing ice cream flavour. Her skyhigh THC content ensures a very powerful...

(24)
£29.90
In stock

Fat Banana (Royal Queen Seeds) Feminized

Royal Queen Seeds brings us the biggest, fattest, and fruitiest Kush with Fat Banana. This unusual variety is so mouthwateringly tasty that you will have a hard time putting her down after taking your first hit. Nevertheless, take it slow and don’t let this lady seduce you. Loaded with 25% THC, she’s incredibly potent and initiates a relaxing high that lasts a long time.

(35)
£32.03
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)
£25.63
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)
£38.44
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.

(26)
£25.63
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)
£23.91 £21.52
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.

(69)
£27.76
In stock

Golosa (Delicious Seeds) Feminized

Golosa is a super flavoursome, indica-dominant strain that's drenched in THC. This award-winning cultivar is definitely what connoisseurs obsessed with indica strains are looking for. It's a high-yielding and visually appealing variety, developed by Delicious Seeds.

(9)
£32.46
In stock

White Fire OG (Growers Choice) Feminized

White Fire OG displays a kaleidoscope of colours when mature, and packs a high-THC punch when smoked. The plant grows to very manageable heights, takes well to training techniques like SOG and ScrOG, and features a rich and full flavour.

(34)
£25.63
In stock

Banana Sherbet (Growers Choice) Feminized

Banana Sherbet is an indica-dominant cultivar that has the potential to steal the thunder from some of the most renowned strains on the market. With its potent THC levels and stable growth patterns, cannabis aficionados can't wait to get a hold of this excellence. The tropical essence of this strain delivers an organoleptic delight every time.

(62)
£21.36
In stock

Gorilla x Lilly (Expert Seeds) feminized

Gorilla x Lilly features flowers oozing with THC. The high produced from this strain offers consistent and powerful effects, as well as relief from certain medical conditions.

(2)
£24.77
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!

(29)
£84.57
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)
£39.30
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)
£22.21
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)
£23.92
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.

(108)
£22.20 £19.98
In stock

Colombian Jack (Kannabia) Feminized

When you want to enjoy an uplifting high, look no further than Colombian Jack. Spark up your day with this sativa-dominant citrus and incense delight bred by Kannabia.

(2)
£32.46
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.

(136)
£17.93 £16.14
In stock

Bruce Banner 3 Fast (Original Sensible) feminized

Bruce Banner 3 Fast is a variation of the original pheno Bruce Banner #3. Changes include a faster flowering time, indica dominance, and altered flavour.

(23)
£18.71
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)
£84.57
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)
£18.71
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)
£18.71
In stock

Killer Glue (Little Chief Collabs) feminized

From the team at Little Chief Collabs comes Killer Glue, a combination of two classic strains that each bring many special traits to the table. This strain is hugely flavourful and aromatic, with bursts of sweet floral notes that demand your attention. Couple this with an unforgettable and profoundly relaxing high, and you've got a strain you'll want to hit time and time again.

(5)
£72.61
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!

(12)
£38.44
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)
£22.20 £19.98
In stock

Frosted Guava (Zamnesia Seeds) feminized

Frosted Guava is a super-resinous indica-dominant treat bred from Guava and Frosted Skywalker. Balancing versatile grow traits with exotic, fruity aromas and a relaxing, clear-headed high, Frosted Guava makes a great addition to any cannabis garden.

(19)
£22.20 £19.98
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.

(69)
£22.20 £19.98
In stock

Apple Fritter Automatic (Zamnesia Seeds) feminized

Few auto strains deliver the potency, aromas, and excellent grow traits found in Apple Fritter Automatic. Backed by top-shelf US genetics, this seed is sure to quickly climb your list of favourite autoflowering strains.

(91)
£22.20 £19.98
In stock

Red Banana Berry XL Auto (Growers Choice) feminized

Red Banana Berry XL by Growers Choice will put all your prejudices about autos to rest for good. This strain grows tall, handles training extremely well, and can produce heavy yields of ultra-potent bud in record speed. Add sweet banana and berry flavours and you've got yourself an exceptional strain.

(34)
£25.63
In stock

Starfire OG (Silent Seeds) feminized

Seeking a stable, homogenous hybrid with US genetics and XL yields? Look no further; Silent Seeds' Starfire OG ticks all these boxes and many more. Find out more about this unique strain and order your seeds today.

(3)
£23.06
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)
£34.08
In stock

Runtz x Layer Cake (Barney's Farm) feminized

The team at Barney's Farm has combined the unique genetics of Runtz with Layer Cake to produce a strain that takes the finest points of her lineage to provide a flavourful, aromatic and most of all, potent cultivar that's bound to impress all those that try her. Effortless to cultivate, Runtz x Layer Cake doesn't take long to reach her full potential. All that's left to do is enjoy her.

(5)
£31.58
In stock

Cash Cow (Anesia Seeds) Feminized

Cash Cow is an ultra-potent hybrid created by crossing Big Bazooka and Lost Tribe. She produces rock-hard, frosty indica flowers with a strong lemon aroma and a long-lasting, knockout stone.

(5)
£46.13
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.

£25.63
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.

(1)
£34.17
In stock

Açai Jelly (Sherbinskis x Silent Seeds) feminized

Stemming from the beloved Gelato line, Açai Jelly doesn't fall far from the tree when it comes to flavour, aroma, and overall appeal. Created as a result of a collab between Sherbinskis and Silent Seeds, this cannabis variety beautifully blends formidable genetics, elevating them to another level. Find out all about this resinous lady.

(1)
£58.94
In stock

Polar Gelato (Sherbinskis x Silent Seeds) feminized

This collaboration between Sherbinskis and Silent Seeds combines the genetics of Bacio Gelato and Sunset Sherbert, two modern cannabis legends from the US West Coast. The result is a vigorous, high-yielding, and, most notably, super-tasty cultivar that lets growers enjoy one of the most iconic cannabis strains. Polar Gelato brings real Cali vibes to grow rooms and gardens worldwide.

(1)
£58.94
In stock

Jealousy (Zamnesia Seeds) feminized

Jealousy, a superb creation from Zamnesia, hit the ground running, and was named Leafly Strain of the Year 2022. It's got plenty to love, including famous parentage, good potency, excellent yield potential, and complex aromas and flavours. This slightly indica-dominant lady produces pronounced effects, making users relaxed and happy, ready for a quiet night in or a fun evening out with...

(20)
£22.20 £19.98
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.

(47)
£22.20 £19.98
In stock

Hyperion F1 Automatic (Royal Queen Seeds) Feminized

Hyperion F1 Auto offers the perfect growing experience for all. This stable strain can be cultivated in a wide variety of settings. Boasting finely tuned pure genetics, growers are in for a treat. After an easygoing 80 days from germination to harvest, Hyperion F1's buds showcase peppery and earthy notes that are perfect for smoking or vaping. Coupled with an uplifting high, this is a real...

(5)
£93.97
In stock

Epsilon F1 Automatic (Royal Queen Seeds) Feminized

Epsilon F1 is the cardinal cultivar from RQS' new line of world-first F1 hybrids. Descending from the likes of Blue Dream, Amnesia Haze, and many other highly-revered cannabis varieties, Epsilon F1 is an autoflowering seed that sprouts into uniform plants and produces exceptional bud in record time.

(23)
£13.24
In stock

Medusa F1 Automatic (Royal Queen Seeds) Feminized

A new and outstanding release from our friends at Royal Queen Seeds, Medusa F1 Auto is a plant that will impress every grower. As a true F1 hybrid deriving from pure cannabis lines, it presents unprecedented stability and uniformity, as well as mouth-watering flavours and a speedy life cycle. Ready in approximately 72 days after germination, quality harvests have never been more attainable.

(9)
£34.17
In stock

Apollo F1 Automatic (Royal Queen Seeds) Feminized

Boasting some god-like genetics, Apollo F1 Auto is effortless to cultivate and rewards growers with an abundance of great-tasting citrus, lavender, and vanilla-scented buds. Whether smoked or vaped, this true F1 hybrid offers an easygoing physical stone that's not couch-locking, but rather keeps users motivated and creative.

(3)
£32.46
In stock

Titan F1 Automatic (Royal Queen Seeds) Feminized

A new behemoth in the cannabis world, Titan F1 Auto is a powerhouse autoflowering strain that showcases stable and reliable genetics alongside giant yields and huge THC levels. With flavours and aromas that draw heavily on sweet fruits, diesel, and lemongrass, smokers and vape enthusiasts will have a field day with Titan F1 Auto.

(10)
£34.17
In stock

Milky Way F1 Automatic (Royal Queen Seeds) feminized

Milky Way F1 Auto from the team at Royal Queen Seeds is unlike anything seen before on this green Earth. This F1 hybrid produces uniform plants with superb yields of hugely flavourful and potent buds that will satisfy all smokers and growers. Typically taking just 74 days from germination to harvest, this is a truly show-stopping strain.

(9)
£89.70
In stock

Orion F1 Auto (Royal Queen Seeds) feminized

From the team at Royal Queen Seeds comes Orion F1 Auto. This autoflowering strain showcases robust, resilient genetics that are accessible to novices and experts alike. After just 70 days from germination, large yields of sweet, super-soothing buds will be ready to harvest and enjoy.

(6)
£93.97
In stock

HighCloudZ (Greenhouse Seeds) feminized

Taking the best features of its parent strains and mixing them into a flavoursome concoction, HighCloudZ from Greenhouse Seeds is all about sweet aromas and flavours. It's a balanced hybrid that uplifts and energises before treating users to a blissful, relaxing body stone. When treated right, plants are highly productive and able to thrive in nearly any environment.

£34.17
In stock

Apricot Auto (FastBuds) feminized

When you're after strong, autoflowering genetics, choose FastBuds' Apricot Auto with confidence. It's a highly rewarding project that won't give you much hassle at all, and it will result in hefty harvests. Plants can thrive with minimal intervention, and besides producing aromatic, sticky buds, they flaunt all sorts of purple and pink hues. At up to 26% of THC, it's an intense smoke.

£30.75
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.

£26.05
In stock

Gushers (Royal Queen Seeds) feminized

Any Gelato hybrid is destined for success, and Gushers contains Gelato 41 genetics as well as those of the award-winning Triangle Kush. Gushers is powerful, dripping with 24% THC, and it exhibits plenty of vigour in the grow room. Great for enjoying solo or with friends, Gushers will lift you up and put you in a happy, relaxed mood.

£24.77
In stock

Apple Fritter Automatic (Royal Queen Seeds) feminized

Apple Fritter Automatic from Royal Queen Seeds showcases massive flavours, potent effects, and a growing experience that's perfectly suitable for all levels of expertise and nearly all settings and environments. Simply put, Apple Fritter Automatic is here to be enjoyed, and in just 12 short weeks, you can get your hands on her moreish buds!

(1)
£21.36
In stock

Cosmic Noodles (Zamnesia Seeds) feminized

A proud descendant of Alien OG and Rollercoaster Haze, Cosmic Noodles offers excellent yields and a fragrant smoking experience. This variety is very potent, measuring in at 25% THC and producing intense, long-lasting effects. Uplifting and relaxing, smoking Cosmic Noodles will catalyse an energising cerebral buzz that later tapers off into a soothing body stone.

(1)
£22.20 £19.98
In stock

Alien OG (Zamnesia Seeds) feminized

Alien OG combines genetics from Tahoe OG and Alien Kush. Born and bred in San Francisco, this Cali classic boasts a delicious pine and citrus aroma, versatile grow traits, and a potent, trippy cerebral buzz.

(4)
£22.20 £19.98
In stock

Cosmic Noodles Automatic (Zamnesia Seeds) feminized

We love catering to all types of growers, and this time our breeders crafted something special for lovers of autoflowers: Cosmic Noodles Automatic. This neat auto is quite manageable, only slightly exceeding 100cm in height, which means it will suit low-key operations well. Its 60% indica influence creates robust, productive plants with rich aromas and great potency.

(6)
£22.20 £19.98
In stock

MAC 1 (Zamnesia Seeds) feminized

MAC 1 is a highly sought-after strain originally bred by Capulator and only given out to select breeders and growers. Now, you can grow this beloved strain at home and enjoy dense, dank, and potent buds for yourself! So, what are you waiting for? Order your seeds now!

(3)
£22.20 £19.98
In stock

Super THC Pack - Automatic Strains

Gone are the days when growing autos meant sacrificing potency and aroma. Modern autoflowers are capable of producing excellent buds that easily rival those of photoperiod strains, and this pack is here to prove it. The seeds included here come from select autoflowering genetic lines that produce dense buds dripping with mouth-watering aromas and, most importantly, mind-bending amounts of...

(5)
£38.43 £34.59
Out of stock
 

Super THC Pack - Feminized Strains

Picture heavy colas of bulging calyxes dripping with delicious resin. That's what you can expect from these hard-hitting THC monsters. Be warned—these strains aren't for the faint-hearted. Packing extremely high THC levels and plenty of terpenes, the strains in our Super THC Pack are ideal for veteran smokers or anyone looking for knockout, pseudo-psychedelic effects.

(3)
£38.43 £34.59
Out of 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)
£18.37
Out of stock
 

Amnesia Molotov (Kalashnikov Seeds) feminized

Kalashnikov Seeds from Russia sure know how to create some outstanding strains and Amnesia Molotov is one of their most lethal ones. This explosive mixture of three of the most potent strains can send even experienced cannabis enthusiasts flying in no time. A staggering 24% of THC make for an incredibly powerful Sativa high but the plant itself is very easy to grow!

(16)
£22.21
Out of 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)
£25.63
Out of stock
 

HulkBerry (Royal Queen Seeds) Feminized

With a THC content surpassing most other strains on Earth, HulkBerry is not here to play around. With roots in the competitive and innovative Colorado breeding scene, HulkBerry provides hybrid vigour in the grow-op and soaring highs that have been known to impress even the most fastidious canna-connoisseur.

(53)
£24.77
Out of stock
 

Gorilla (Dinafem) Feminized

Gorilla by Dinafem definitely lives up to her origins, boasting sky-high potency, excellent flavour, and true hybrid vigour. The award-winning indica delivers an effect that is as strong and powerful as a smack from a lumbering silverback! The lady is not too difficult to grow, and shines with very high resin production and massive yields.

(3)
£23.92
Out of stock
 

Zkittlez (Growers Choice) Feminized

Zkittlez is an award-winning new-school strain that stole the hearts of indica lovers. This variety develops a large amount of THC and delicious terpenes. Zkittlez is a flavoursome treat that flowers super fast. It’s an ideal strain for those seeking a well-rounded high.

(20)
£29.90
Out of stock
 

Gorilla x White Widow (Expert Seeds) feminized

Gorilla Glue is a diesel-powered marijuana Mack truck. White Widow is the original coffeeshop ice queen. Gorilla x White Widow is the dank synthesis of arguably the dankest strains in the world. Get ready for a heavy indica monster. This hybrid will finish flowering in 8–9 weeks and take you directly to Dreamland.

(14)
£24.77
Out of 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)
£18.71
Out of 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)
£19.65
Out of stock
 

Sugar Breath (Humboldt Seed Organization) feminized

Sugar Breath sounds quite cutesy and innocent, but don’t let the name fool you. This girl by Humboldt Seeds shines with outrageous potency and gigantic yields. Make sure you have a comfy couch nearby because you’ll be stoned silly for a long time when you enjoy this delicacy.

(4)
£23.06
Out of stock
 

Sapphire Scout (Humboldt Seed Organization) feminized

Sapphire Scout by Humboldt Seeds combines two West Coast legends into a stunning indica hybrid for an amazing cannabis experience. She will yield you tons of incredibly potent and resinous buds, yet she is easy to grow, so really anyone can look forward to excellent results.

£23.92
Out of 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)
£18.71
Out of stock
 

The New (Humboldt Seed Organization) feminized

The New is far from your average cannabis strain. She's for growers who can handle enormous THC levels and have the space to accommodate plants that can reach 4m in height.

(1)
£64.92
Out of 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)
£18.71
Out of stock
 

Ultra Violet GMO (Growers Choice) feminized

Are you chasing potency? Ultra Violet GMO produces thick indica nugs boasting up to 30% THC and a hard-hitting stone that'll keep you entranced for hours. A receptive and productive specimen both indoors and out, all manner of growers would be wise to make some space for Ultra Violet GMO.

(11)
£25.63
Out of stock
 

LA Vanilla Cake (Silent Seeds) feminized

Want to grow weed worthy of a US dispensary? Look no further; LA Vanilla Cake might come from a European bank, but its superb genetics guarantee top-shelf, Cali-grade bud in record time, and with exceptional yields. What are you waiting for? Indulge in LA Vanilla Cake today!

(2)
£23.92
Out of stock
 

Forbidden Runtz XL Auto (Growers Choice) feminized

On the hunt for potency, but not to the detriment of flavour? Then we've got just the thing for you. Forbidden Runtz XL Auto is a great-tasting, potent powerhouse that impresses from seed to smoke. But be warned, such potency means users are best off proceeding with caution. And not only is the potency “XL”, so are the yields!

(14)
£25.63
Out of stock
 

Headhunter (Purple City Genetics) feminized

From the team at Purple City Genetics comes Headhunter. This is a real standout strain, boasting dynamic flavours, huge levels of THC, and well-rounded effects. Growers are simply spoilt for choice with this easygoing cultivar.

£33.32
Out of stock
 

Gush Mints S1 (Purple City Genetics) feminized

Promising over 30% THC, Gush Mints S1 by Purple City Genetics might just be one of the most potent strains out there. But it's not just her massive amounts of THC that make this strain so attractive; it also grows great and boasts a mouth-watering aroma.

£33.32
Out of stock
 

Moby Delicious (Delicious Seeds) feminized

The folks at Delicious Seeds love pleasing cannabis aficionados. Their Moby Delicious ticks many boxes and may quickly become your next sativa-dominant favourite. This plant is high in THC, containing up to 26% of this beloved cannabinoid and it produces large, dense and highly resinous buds. The effects are deeply relaxing and uplifting at the same time, offering a well-rounded experience.

£29.04
Out of stock
 

Bay Burger (Delicious Seeds) feminized

Bay Burger is not for the faint-hearted with its indica-dominant genetics and up to 28% THC. It has powerful physical effects that can easily cause serious couch-lock. As a growing project, however, it will suit all cannabis fans, as it's not demanding and is resistant to pests and mould. Add high returns and pungent aromas, and you've got yourself a new indica favourite.

(3)
£29.04
Out of stock
 

You've viewed 95 of 95 products

You’re visiting our United Kingdom website.

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