Top 10 High THC Strains

Top 10 High THC Strains
January 07, 2021

THC (Tetrahydrocannabinol) is the primary psychoactive compound in cannabis.  In other words, this cannabinoid is the part of a cannabis plant that gets you high. 

Over the years weed strains have been getting stronger in their THC content.  It has been suggested by researchers that back in the ’60s the average THC content in weed was as low as 1-3%.  This average grew to around 4% in the early ’90s and rocketed to a huge 13% in 2013.  By 2017, the average was anywhere between a whopping 17 and 28%!

We’re often asked to recommend high THC cannabis strains, or asked which weed has the highest THC level, so we’ve compiled a list of our top 10 favorites.

These THC heavyweights will get you higher than Everest, that’s for sure, and about as far out as the Crab Nebula, and that’s 6,523 light-years, man.  However, there can be a serious downside to these towering THC levels and the highs they produce.  Paranoia, anxiety, and panic can all manifest during these intense psychedelic experiences, with anything other than the most moderate of doses.

Be warned, these strains of cannabis are amongst the strongest weed in the world and should not be trifled with.  If you’re a newbie user, look away now and back towards the door.  Seriously, if you’re inexperienced, forget you ever saw this page and call your mom.  Even experienced tokers with a well developed THC tolerance should start low and slow.  These are true THC titans!

Gorilla Glue Lemon

With stratospheric THC levels of up to 29%, this hybrid is not for the fainthearted and should be avoided if you have a busy day ahead.   This Sativa gets the mind buzzing with a euphoric, energizing, and uplifting high, which inspires creativity.

This happy high gives way to potent, couch-locking sedation and a numbing sensation that creeps up without warning.  This marijuana spreads calmness from the neck down, spreading through the limbs before lulling users into a deep sleep. 

Gorilla Glue Lemon is at it’s best an hour or so before bedtime, or on lazy weekends after all the chores are done.

This THC-rich cannabis is also said to have potent therapeutic properties and can be an effective remedy for mental and physical ailments such as depression, anxiety, insomnia, fibromyalgia, multiple sclerosis, and more.


Tests have shown Trainwreck to possess THC levels of up to 25%.   The psychedelic high it delivers is not only incredibly intense but can be quite narcotic. It’s like a speeding train that can’t be stopped, once it kicks in, you’re not getting off until it reaches its destination.

The energizing, euphoric high hits instantly, flooding the mind with creativity and inspiration.  As the high wanes slightly, deep bodily relaxation sets in, though users may still feel productive and quite upbeat, rather than lethargic and lazy.

Careless dosing with Trainwreck may lead to a seriously distracting and overwhelming buzzing effect, deep introspection, and couch-lock.

Hawaii X Purple Skunk

This mind-bending strain produces a surreal, psychedelic high that melts away stress and depression.  Simultaneously, a pleasant calm works its way through every part of the body, relieving discomfort and pain.  Chronic conditions like migraines, arthritis, and muscle spasms diminish under the power of this 24% THC behemoth. 

Almost hallucinatory, this weed is truly psychedelic and best left to very seasoned users. By the time those characteristics are to the fore, the world shines in different, kaleidoscopic colors and artistic souls will feel the urge to create.  Inspiration abounds. 

Hawaii X Purple Skunk’s parting gift, is a deep slumber, the likes of which Sleeping Beauty would have envied.

Kosher Kush

Purported to be the only marijuana ever blessed by a Rabbi, this award-winning, heavy-hitter has an astonishing, average THC level of 22% to 29%!

Kosher Kush provides stoney high is mental and physical; a match made in relaxation heaven.  Spacey and introspective, the high is meditative and promotes profound moments of self-reflection and recognition of personal strengths and weaknesses.

Like a piece of melting steel, the entire anatomy feels heavy and almost flaccid. The body buzz does not immobilize, though, so moving is possible, albeit unsought.

This zen-like high is accompanied by a deep physical calmness, that fills the limbs with liquid gold.  Sleep is almost inevitable.


Bruce Banner

With up to 29% THC, this green heavyweight smashes the user in the head, like a punch from the Incredible Hulk.

Bruce Banner boasts one of the highest THC levels in the market. This bud takes effect swiftly and with great power, supplying a creative euphoria and a relaxing body high that travels down the back of the neck and into every limb, bestowing a calming yet energetic physical sensation.

It is the perfect weed for pre-party use or group sessions, as users will find a longing for social interactions and meaningful conversations.  Creative thinking is given a boost, too, and artists may find it a source of great creativity.

BB also has great pain-killing qualities, as well as anxiolytic capacity, reducing anxiety and stress levels

Black Widow. 

The award-winning Black Widow is the legendary offspring of a South Indian Indica and a Brazilian Sativa.

The cerebral buzz provided by this THC monster kicks in right from the start, giving users a trippy head high that soon turns to euphoria.  Its THC levels can reach as high as 28 percent, making Black Widow one of the most potent weeds in the world; its powerful buzz helped it win 1st place in the 1995 High Times Cannabis Cup.

The intense head buzz is unstoppable, but the strain’s Indica content provides mild body relaxation which takes the edge off the energy push.  Users won’t become hyperactive, and remain calm, while mentally energized.  This makes the widow a perfect partner for creative pursuits; artists, writers, and designers love her.


Whether the story is true or not, G13 is said to have been created in a Government lab, as part of some CIA or FBI ‘super-weed’ experiment.  What is certain is that G13’s body numbing, couch-locking relaxation is best enjoyed in the evening, or when your schedule is clear.  If this strain was developed to immobilize the enemy, it’s a winner!

G13 Feminized has a THC content, of up to 24%, sends the mind off on a soaring, euphoric high, leading to a happy, elevated mood.  However, the clear-headed, cerebral lift can’t fight the physical stone and users will inevitably drift towards a long, deep sleep.  The sedative properties will become too strong to ignore and the drowsiness is profound.

Possessing strong medicinal properties, it has been used to help alleviate chronic pain, anxiety, depression, stress, insomnia, and poor appetite. 

Grandaddy Bruce

Perfectly balanced stimulation and relaxation is the gift of this quality hybrid.  The marriage of two famous strains has resulted in slightly Indica-leaning marijuana, with as much as 28% THC content.

Well-known for delivering a cannabis experience like no other, Grandaddy Bruce is certainly not for the faint-hearted. Just a toke or two of these beautiful buds sends the user into cerebral overdrive, carried on a wave of intense euphoria.  While mentally surfing the clouds, the body will experience a wipe-out of relaxation that’ll leave you blissfully marooned on the sofa.

Taut muscles will feel soothed, stress and fatigue will melt away and sleep will eventually carry you away on its tide.  For these reasons, Grandaddy Bruce is a firm favorite amongst medicinal users.

Blue Haze

Blueberry genetics keep things smooth and relaxed throughout a soaring flight.  A true cerebral delight, Blue Haze has a THC volume of up to 26% and takes off with a mind-buzz that promotes mental clarity, positivity, and energy.

Blue Haze’s decent-sized twist of CBD ensures that the cerebral flight is paired with a heavy, but manageable, body high and a soothing calm will take over, melting stress and tension away.  Couch-lock is unlikely, although you are likely to feel a bit heavy and lazy.

Probably, best consumed a couple of hours before hitting the sack, it’s a fast track to relaxation after a busy day, although cooking or chilling with friends is still possible.  After 2-3 hours, you’ll likely be knocking at the door of Slumberville.  It is also a popular medical strain.

5 Alive

5 Alive is a rare breed that’s almost impossible to find in dispensaries, so growing your own is probably your best option.  Boasting up to 29% THC, users experience a rush of euphoria that can eradicate stress and depression.  Add potential pain-suppressing qualities that can work wonders on migraines, arthritis, and PMS and you’ve got a much sought-after medical strain.

An enlivening pick-me-up with a soaring cerebral high, 5  Alive offers a boost in creativity, encouraging artistic expression. The strain can also offer help in brainstorming sessions or other activities that require a bit of inventiveness and originality.

5 Alive also boosts physical vigor and helps the body to carry out the mind’s demands. In moderate doses, the buzz is subtle and calm, keeping the entire anatomy relaxed yet active.

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