High THC Strains

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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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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!

(323)
£84.77
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)
£27.13
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)
£84.77
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)
£84.77
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)
£94.19
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.

(24)
£13.27
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)
£13.70
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.

(11)
£94.19
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.

(10)
£89.91
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)
£94.19
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