High THC Strains

There are 97 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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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.

(73)
£21.76 £17.41 +13 Extra Gift Points
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.

(126)
£21.76 £17.41 +13 Extra Gift Points
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.

(161)
£17.58 £14.06 +11 Extra Gift Points
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.

(258)
£21.76 £17.41 +13 Extra Gift Points
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.

(40)
£21.76 £17.41 +13 Extra Gift Points
In stock

Gelonade (Zamnesia Seeds) feminized

Trusted and loved genetics: This hybrid is the lovechild of Gelato and Lemon Tree. Satisfying harvests: Reared in optimal conditions, Gelonade pleases growers with healthy yields. Exciting terpene profile: Refreshing citrus and spicy pepper combine to provide a fruity blend with a kick. Soothing effects: Excellent when you need to loosen up and relax.

(7)
£21.76 £17.41 +13 Extra Gift Points
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!

(16)
£21.76 £17.41 +13 Extra Gift Points
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 THC.

(28)
£37.67 £30.14 +23 Extra Gift Points
In 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.

(13)
£37.67 £30.14 +23 Extra Gift Points
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.

(96)
£21.76 £17.41 +13 Extra Gift Points
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.

(118)
£21.76 £17.41 +13 Extra Gift Points
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.

(48)
£23.44 £18.75 +14 Extra Gift Points
In stock

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!

(149)
£23.44 £18.75 +14 Extra Gift Points
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.

(119)
£23.44 £18.75 +14 Extra Gift Points
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.

(12)
£21.76 £17.41 +13 Extra Gift Points
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.

(4)
£21.76 £17.41 +13 Extra Gift Points
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.

(178)
£21.76 £17.41 +13 Extra Gift Points
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.

(14)
£21.76 £17.41 +13 Extra Gift Points
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.

(23)
£21.76 £17.41 +13 Extra Gift Points
In stock

Gelonade Automatic (Zamnesia Seeds) feminized

True Cali heritage: Gelonade Automatic is the perfect example of the best California has to offer. Zesty and refreshing flavors: The perfect blend of peppery and lemony notes. Fast and bountiful: Despite the sativa dominance, the ruderalis influence has gifted Gelonade Automatic with a quick life cycle. Happy and euphoric: Prepare to smash that to-do list!

(16)
£21.76 £17.41 +13 Extra Gift Points
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.

(1)
£24.28
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.

(1)
£25.54
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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.

(16)
£31.82
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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.

(37)
£31.82
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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.

(22)
£33.49
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.

(77)
£27.21
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.

(11)
£33.49
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.

(14)
£33.49
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.

(10)
£31.82
In 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.

(57)
£24.28
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!

(102)
£22.61
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!

(4)
£20.93
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 treat.

(9)
£33.49
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.

(171)
£30.96
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.

(3)
£57.78
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.

(5)
£31.82
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.

(13)
£30.96
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!

(15)
£19.26
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)
£38.52
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.

(41)
£20.93
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.

(73)
£26.53
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)
£57.78
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!

(361)
£30.14
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.

(2)
£30.14
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)
£18.34
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)
£18.34
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.

(17)
£18.34
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.

(3)
£24.28
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