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What Are The Strongest Cannabis Strains?

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October 5, 2020 by Pure Oasis

Cannabis is now legal in many states for either medicinal or recreational purposes or both. However, caution should always be exercised when consuming this product, as certain strains are notably strong. The increased potency in marijuana is largely due to improvements in cultivation methods. As both technology and knowledge of cannabis have advanced, due to research, more powerful strains have been created. So what are the strongest cannabis strains offered today?

The Strongest Cannabis Strains

Many of the strongest cannabis strains contain high levels of tetrahydrocannabinol (THC), which is the primary psychoactive compound found in marijuana. THC is the cannabinoid responsible for creating the “high” sensation associated with smoking cannabis. If you are seeking longer-lasting relief, a stronger strain may be beneficial. Here are five of the strongest cannabis strains currently on the market and what makes each one unique.

Godfather OG

Godfather OG, which is especially popular in Southern California, is one of several types of “OG” strains. It belongs to the indica marijuana plant and is frequently recommended for treating pain and insomnia. Godfather OG is also known for its spicy scent and hints of grape. This strain can have THC levels as high as 28%, according to cannabis news website Leafly. If you are unafraid of some drowsiness, Godfather OG – also known as “The Don of All OGs” – may serve as an excellent stress reliever.

The Pungent Chemdawg

Per cannabis price comparison platform Wikileaf, Chemdawg typically has a THC content that falls between 15 and 20%. This strain, whose exact origins remain unknown, is characterized by medium-sized buds and long, tapered flowers. Chemdawg is also known for its extremely pungent smell of musk and pine. The high produced by this strain will hit you rapidly, and you may also feel your senses become heightened after inhaling it. Chemdawg typically helps more with stress and anxiety than with insomnia.

Irish Cream

Irish Cream is a strain with predominantly indica properties, although it also contains sativa, and has a strong floral scent and can smell sweet and fruity when cured properly. It is created via a backcross of Mighty Irish Hope. According to, Irish Cream contains between 16 and 17% THC and approximately 1% cannabidiol (CBD, another psychoactive compound found in cannabis that helps treat anxiety and depression). This strain will leave you relaxed for an extended period of time and may even generate a strong sense of euphoria.

White Tahoe Cookies

This is another indica-dominant strain that contains approximately 21.5% THC. Created by Kush4Breakfast, it also induces great relaxation and euphoria and is known for its peppery aroma, which is attributed to the high concentration of caryophyllene (chemical compound,C15H24) contained inside it. White Tahoe Cookies can also have a citrusy flavor, as it contains a relatively low concentration of the compound limonene. White Tahoe Cookies is created by mixing The White X Tahoe OG strain and an unknown Girl Scout Cookies cut.

Strawberry Banana

Also known as “Strawnana,” this cannabis strain can have THC levels of up to 23% and is notable due to its heavy resin production. Strawberry banana will make you feel extremely relaxed and ecstatic, and may even spark a sense of creativity and interest in problem-solving. It has a mostly citrusy aroma, but can also have a slightly herbal and peppery scent. The high produced by Strawnana builds slowly, similar to other strong indica-dominant strains.

If you have decided to consume a potent cannabis strain for the first time, whether by inhaling or by eating edibles, it’s important to be extra careful. This is because certain strains can induce side effects and symptoms such as dry mouth, dizziness, and headaches if inhaled in large amounts. Be sure to consult with an expert for more information on strong strains.

Request Information From A Qualified Budtender

Speak to the experienced budtenders at Pure Oasis in Boston for more information on strong cannabis strains and the effects they produce. We are Boston’s first recreational marijuana dispensary.

At Pure Oasis, we offer a user-friendly experience that includes staff members who are highly knowledgeable about all of our products. We carry several varieties of indica, sativa and hybrid cannabis flower, as well as pre-rolled joints and blunts, cannabis edibles, vape pens and accessories.

When you inhale cannabis flower, you can expect to feel the full results approximately 30 minutes to an hour after consumption. It is important to note that the effects typically diminish over time and every person has a unique tolerance level; therefore, we always recommend beginning with the lowest available dose. Call Pure Oasis today at (617) 420-6837 or contact us online to learn more about our cannabis products.

5 Top and Strongest Marijuana Strains of 2022

If you believe the annual reports from the National Institute on Drug Abuse, weed is getting stronger. Certainly, if you measure potency by THC content, marijuana is unquestionably becoming more potent. It was even noticeable when the average THC content of weed in 2003 was 6.4%, compared to just 0.72% in 1976.

One of the main reasons for this extra potency is the focus on producing sinsemilla, which is the tops of unfertilized female plants (these happen to contain the highest amount of THC). In the modern era, harvesters remove the trimmings and get rid of water leaves, which contain little to no THC.

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It is also likely true that cannabis strain production has contributed to the greater strength of pot; growers prefer marijuana strains with high cannabinoid levels , and today, the strongest selections are hybrid crosses of well-known strains.

DID YOU KNOW: THC levels averaged an estimated 6.4% in 2003, while in 2018 most estimations were above 15%?

Moreover, we are uncovering stronger combinations on an almost daily basis. Back in the halcyon days of the 1960s and 1970s, finding weed with a THC content of over 10% was a rarity. Today, a significant number of strains have well over 20% THC.

If you are seeking a serious high, all of the above is fantastic news. The question is: What are the world’s strongest marijuana strains? Keep reading to discover our 5 top picks.

5 Best and Strongest Marijuana Strains of the Year

Realistically speaking, the following strains are not necessarily “new” strains for this year. Rather, several of them are OG classics that have simply “evolved” with the times to contain more and more THC over the decades.

More accurately, they have been “selectively bred” over multiple generations of numerous breeders to contain only the female genetics which produce buds with the highest THC content. So, how does “selecting” for a strain with high THC content work, you might be wondering?

Well, after harvesting a crop you can “test” each individual plant specimen for its: A) flower (bud) production and B) THC content. This testing can be done in an actual HPLC laboratory where they chemically examine the THC levels , or (more commonly), can be done by smoking a sample of each plant’s flowers and seeing which one gets you higher.

When you find a plant with specific genetics that you like, simply clone that one over a new generation and voila – you’ve selectively bred cannabis for high THC content.

Anyway, without further ado here are our picks for five of the strongest and highest-potency cannabis strains for the year. There are a lot of high-THC strains out there in this day and age, but these are our personal favorites.

1 – Godfather OG (The World’s Strongest Marijuana Strain?)

According to High Times, Godfather OG is the most potent marijuana strain on the planet. This indica dominant hybrid is reported to have a THC content of over 34%! Since it is an activated THC value, there is a good chance that the figure is conservative.

Godfather OG is cultivated by California Herbal Remedies (CHR) and is believed to be a cross of Cherry Pie, OG Kush , and Granddaddy Purps . With this information in hand, it is no surprise that Godfather OG is often referred to as the ‘Don of all Kush’ strains. Even a typical strain should have a THC of over 25%.

Of course, strength means nothing without quality — and Godfather OG has absolutely no shortage of quality.

This strain has won the High Times Cannabis Cup for best indica strain in the past, and when you smoke the bud, it will hit you with an incredible cerebral high that soon results in a whole-body euphoria. Users tend to feel calm and happy, with the euphoric effects oozing over both mind and body. Godfather OG provides you with a feeling of total relaxation, and could ever render you immobile or couch-locked for the afternoon, such is its potency.

2 – Chemdawg (The Pungent Marijuana Strain)

Chemdawg previously held the record for highest THC content when it won the coveted Cannabis Cup title with a THC level of 32.13%. Cultivated by Next Harvest in Denver CO, it is one of the most mysterious marijuana strains. People know little about its genetics or history. However, rumor has it that Chemdawg is a cross of a Thai and Nepalese sativa.

Whatever its ancestral lineage, it should go without saying that Chemdawg is not for the newbie. It is an indica dominant hybrid (55%) renowned for its pungent scent. This aroma carries more than a hint of diesel. In fact, this strain is used to create Sour Diesel — another one of the world’s most popular (and potent) marijuana strains.

When you smoke Chemdawg, it will provide you with a wonderful cerebral high that is incredibly enjoyable — that is, once you know how to handle it!

The nugs have a powerful relaxing effect that is ideal for calming down a mind that tends to race. And furthermore, if you are stressed at work and need something to help you chill out, research shows that strains like Chemdawg are perfect because of their uplifting effects.

Moreover, it is also a strain conducive to creativity and has been a preferred favorite among artistic types for many, many years in California and the West Coast in general.

Want to learn more about the Chemdawg Strain? Check out this comprehensive Chemdawg review . We’ve also explained how it can help you!

3 – Irish Cream (This Marijuana Strain is the Real McCoy)

This is yet another case of “selectively breeding” to yield an exceptionally powerful marijuana strain. Mighty Irish Seeds developed Irish Cream. It is an indica and a crossbreed of Real McCoy and Cookies and Cream. The result is a strain that the company claims clocks in with an average THC content over 27%.

If you smoke this strain with the belief that it will taste like Bailey’s, though, you’re in for a disappointment as it offers classic, dank weed flavors instead. You will find that this bud offers the taste of fresh herbs and pine, and while it doesn’t taste quite like the Sweet Cream strain, it is nonetheless a pleasant experience.

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Irish Cream is an extremely potent strain which means it could help with the relief of anxiety, depression, stress, and even chronic pain. The initial high is mostly cerebral, but soon you’ll feel happy, relaxed, and sociable all at once. Eventually, your body starts to feel the effects and you’ll begin to feel sedated and ready to hit the sack for a deep, naturally healthy night’s sleep. This is what we like to call a “carefree” strain, due to the fact that it is ideal for evening and night time use.

4 – White Tahoe Cookies (This Marijuana Strain is the New Kid on the Block)

This exciting new strain was initially grown by Kush4Breakfast and is a cross of The White, Girl Scout Cookies, and Tahoe OG, so the name of the hybrid became obvious to the creator. White Tahoe Cookies has become extremely popular on the West Coast, according to its breeders, and its THC content clocks in at over 27% — making it one of the world’s strongest as a whole.

This is an indica-dominant strain (roughly 70%) and is one of the most aesthetically-pleasing marijuana strains around. Archive Seed Bank is the distributor of White Tahoe Cookies. It is certainly worth trying if only so you can enjoy the sweet, flavorful notes with obvious OG undertones.

In terms of effects, it may shock you how quickly White Tahoe Cookies starts to hit the senses. Within minutes, you should feel euphoric, and your mind should become filled with great ideas because this strain is fantastic for creativity.

In fact, all it needs is a single toke to understand that you’re dealing with a potent monster of a strain.

Ultimately, you will feel a relaxing body buzz that turns into a feeling of sedation. The high sometimes lasts for hours. For this reason, make sure you’re safely wrapped up in bed. (And of course, this particular effect makes it one of our absolute favorites for insomnia and other sleep issues!)

5 – Strawberry Banana (The Marijuana Strain That Tastes Like Dessert)

This indica dominant hybrid (70%) is a cross of Crocket’s Banana Kush and Strawberry Bubblegum, and was developed by those crazy creative geniuses at Serious Seeds. It is a mainstay on the High Times ‘Strongest Strains on Earth’ list, selected three years in a row. On at least one phenotype of the strain (a specimen grown by Greenwolf LA & Green Country Rebellion), average THC levels of 31.62% were detected by the growers.

In all honesty, however, the average THC level of this strain is probably closer to 26-28%. This still makes it one of the most reliably potent marijuana strains in the world. Strawberry Banana, known for its incredible taste, is akin to, erm, strawberries and bananas. The taste is accompanied by an amazingly sweet and fruity scent, as well as a delicious banana exhale.

Don’t let the “tropical” name of Strawberry Banana fool you; with max THC levels pushing 32%, it is an expert-only bud that packs a serious punch.

Strawberry Banana begins with a cerebral head high, and ensures you feel relaxed and focused throughout the entirety of the experience. Eventually, you will feel sedated and possibly even couch-locked. This is a fantastic strain to handle chronic pain, and according to certain studies , strains like Strawberry Banana are also suitable for users suffering from depression, PTSD, and insomnia.

Final Thoughts: The World’s Strongest & Best Marijuana Strains for the Year

Whatever strain you decide to try, remember that the terms ‘strong’ and ‘potent’ don’t always have to mean ‘high-quality.’ We have worked hard to find (what we expect to be) the world’s most powerful marijuana strains of the year. These strains lead the way today in terms of a kick-ass high. Plus these strains can lead to a memorable and enjoyable experience for many years to come.

Naturally, you can expect this list to change regularly year-by-year. Growers find new and improved ways to boost marijuana potency frequently. Realistically, how long will it be before a strain appears that produces buds with 40% THC? Will this be the year? We can’t wait to find out!

If you are looking for some of the highest THC strains on the market. Ones that will blow your mind, then you MUST check out these 5 High THC Strains .

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.

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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)

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)

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)

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)

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)

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.