Looking for the Highest THC Strain? Try These!

THC, the dominant cannabinoid in cannabis, is responsible for producing the euphoric and mind-altering high commonly associated with marijuana. The more THC, the stronger the buzz.

Thanks to their unique genetics, different strains of cannabis possess different amounts of THC. As genetics have become more refined through careful crossbreeding, some modern cannabis strains now possess astonishingly high levels of THC. This has many people wondering what the strongest weed strain is.

If you’re looking for a strain to blow your mind with cerebral euphoria or to provide relief from stubborn medical symptoms, check out one of the high-THC strains on this list.

Strongest Marijuana Strain: Which Should You Pick?

Godfather OG (Indica)

What do you get when you cross XXX OG and Alpha OG together? Godfather OG, aka “the Don of All OGs” is here to show us. And we like what we see.

If you’re a fan of OGs, you can’t pass up on this one. Its balanced 60/40 indica-dominant genetics grant this strain the low-key, relaxing vibes you’d expect from an OG along with some of the invigorating zazz that sativas usually reserve for themselves. You can thank its THC content, ranging from 19 to 25%, for that.

Irish Cream (Indica)

This indica-dominant hybrid possesses a sweet taste and smooth, lush smoke that you’d expect from a strain called Irish Cream. A backcross of Mighty Irish Hope, Irish Cream’s indica genetics make it great for easing stress or anxiety.

One of the reasons for this strain’s potent effects is its robust 29% THC ratio. But that’s not all. Irish Cream also frequently develops CBG as well. Thanks to the entourage effect, this can further enhance the already-powerful properties that this strain has.

Ghost Train Haze (Sativa)

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Source: Leafly

Ghost Train Haze is an 80/20 sativa that has been known to reach THC levels as high as 27%. How potent is it? In 2012, High Times magazine declared it ‘the most potent strain on earth’. Ghost Train Haze could very well be the highest THC strain on the planet.

Thanks to its whopping THC levels and its sativa genetics, this strain produces a super stimulating, energizing, euphoric, and uplifting high. If you’re feeling down, there’s no better pick me up! But if you are prone to anxiety or paranoia, it may be best to skip this one.

Trainwreck (Sativa)

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Trainwreck is an exhilarating sativa-dominant hybrid that produces an uplifting, energizing, and euphoric high perfect for daytime smoking. This strain’s THC levels peak at 25% and will hit you like a train, producing strong cerebral effects that often lead to laughter and energized creativity.

Trainwreck comes from crossing two pure landrace sativas (Mexican, Thai), and a potent landrace indica (Afghani). Its bright green buds are known for their piney, citrusy scent, and lemony aroma.

Bruce Banner #3 (Sativa)

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Source: Seed City

There’s a good reason why this strain is named after the Hulk. Bruce Banner #3’s monstrous THC levels can reach as high as 29%. Many people believe this to be the strongest marijuana strain around. This 80/20 sativa-dominant hybrid makes a loud introduction with immediate waves of cerebral and physical euphoria before settling into a nice full-body relaxation.

This powerhouse strain is a cross between legendary indica OG Kush and delicious sativa Strawberry Diesel. The final product is not only a delight for the senses but was also named to High Times’ ‘Earth’s Strongest Strains’ list more than once.


Here’s a classic strain that can still hold its own against any of the whippersnappers on this list. Chemdawg is also a fairly mysterious strain. Its forerunners are shrouded in mystery, although it’s bestowed its genetics to other legends like Sour Diesel since it hit the scene.

Chemdawg takes its name from the strain’s pungent, powerful scent, reminiscent of chemicals or diesel fuel. But where this strain really shines is its THC content. Countless cultivators have tried their hand at Chemdawg over the decades. These many variants usually fall around 19% THC, although one shining example reached as high as 30% in a recent Cannabis Cup.

White Tahoe Cookies (Indica)

This three-way cross takes its name from its three ancestors: the White, Tahoe OG, and Girl Scout Cookies. Those three legendary strains have come together to create White Tahoe Cookies, and we’re glad they did. Its THC regularly measures between 20% and 29%, setting it firmly in the category of high-grade strains. Its 70/30 indica-dominant genetics makes it perfect for anyone who wants to chill out. What’s more, indicas have a reputation for helping improve sleep.

Kosher Kush (Indica)

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Winning the High Times Indica Cup in 2010 and 2011, Kosher Kush has long been recognized as one of the most potent indicas in the world. Its genetic background is a mystery, but one thing is for sure, this strain definitely packs in the THC.

When grown well, Kosher Kush consistently clocks in at between 20%-25% THC. Along with relaxation and euphoria, this strain is also likely to make you sleepy and hungry, making it perfect for a late-night smoke.

Critical Kush (Indica)

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This 90/10 indica is a cross between legendary strains OG Kush and Critical Mass. The final product is a couch locking indica that has been measured at over 25% THC.

Critical Kush produces a relaxing and euphoric body high accompanied by mild cerebral euphoria. Thanks to its indica genetics and high-THC levels this strain has become a favorite among medical marijuana patients. Whether you’re looking for a strain to treat your medical condition, or simply to looking to take the edge off, you can’t really go wrong with Critical Kush.

Strawberry Banana (Indica)

With an incredible flavor and respectable THC content, Strawberry Banana (also known as Strawnana) secured the final spot on our list. Clocking in at about 22% THC on average, this 70/30 indica-dominant hybrid definitely deserves to make an appearance in this post.

With its indica-dominant genetics, Strawberry Banana is a great afternoon and evening smoke. It’s perfect for unwinding and relaxing, but not so tranquilizing that you need to fear couch-lock. 

You can grab the strongest marijuana strain at your favorite Des Moines or Seattle Dispensary. Check our online menus to see what’s available.

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