What are the strongest cannabis strains?
Looking for a weed strain that will challenge your tolerance or stand up to stubborn medical symptoms? Readers ask us all the time which strains are the most potent, and while that depends on a variety of factors from how it was grown to the quality of genetics, we’ve put together a list of strains that have a reputation for heavy-handed euphoria.
While THC is the main driver of potency in weed, it’s important to understand the role terpenes may play in enhancing and shaping the strain’s high. Terpenes like myrcene, caryophyllene, and limonene refer to aromatic compounds that lend cannabis its unique array of smells, and a cannabis strain rich in both terpenes and THC often delivers a more remarkable experience than a product that lacks chemical diversity.
The below cannabis strains are just a selection of popular powerhouses, but keep in mind that there are many more options and frontrunners out there. You can also filter for “potent strains” on Leafly dispensary menus to see if any of these recommendations are available near you. And remember the adage “start low, go slow” with these ones.
Average THC: 19%
GSC and the many Cookie-crosses descending from it have hauled their way up the ladder of fame over the last several years, and it isn’t hard to see why. Expect a crushing wave of blissful euhoria that enshrouds both mind and body with warm relaxation for hours.
Average THC: 20%
Kosher Kush first blessed the world with its presence in 2010 and has been nabbing Cannabis Cup awards ever since. Its genetic background may be a mystery, but this strain’s keepers at DNA Genetics have refined a champion. Wrapped in a thick blanket of crystalline resin, you’ll hardly need a closer look to see that this tranquilizing indica is not one for the novices.
Average THC: 20%
Hiding in a white cloak of crystal resin, Ghost OG is a strain that is bred for its high-octane euphoria. Said to be a cut off the original OG Kush, Ghost OG’s potency is toned by a symphony of terpenes that fuel this strain’s powerful THC engine. Find a comfy seat and prepare to be swept into a powerful, euphoric current perfect for relaxing.
Average THC: 23%
Bruce Banner, appropriately named after the Hulk’s alter ego, is a heavy-duty hybrid with a staggering THC content. Rated the strongest strain in 2014 by High Times following its victory in the 2013 Denver Cannabis Cup, Bruce Banner has since carved itself quite the reputation. Powered by OG Kush and Strawberry Diesel genetics, Bruce Banner delivers a dizzying punch of euphoria that anchors your body in deep relaxation.
Ghost Train Haze
Average THC: 18%
Bred by Rare Dankness Seeds, Ghost Train Haze has proven to be a lively and vigorous strain. Inheriting genetics from Ghost OG and Nevil’s Wreck, Ghost Train’s potency takes form in a jolt of euphoric energy that goes straight to the head, feeding focus and creativity.
Average THC: 19%
Chemdog is a classic strain whose unforgettable potency keeps a vice grip on its fan base. Ripe with the scent of acrid fuel, Chemdog delivers an unforgettable flavor profile alongside its invigorating euphoria, inviting creativity alongside firm stress relief.
Average THC: 20%
Original Glue is named for the stickiness of its resinous buds, and this strain certainly lives up to its name. Multiple Cannabis Cup awards serve to back up the legends of Original Glue’s potency, but we doubt you’ll need the proof once you’re stuck to the couch in stupefied contentment.
Average THC: 21%
Named for the whiteout of crystal resin cloaking her buds, The White has become a godsend for breeders looking to improve the potency of their genetics. The White delivers a disorienting blizzard of euphoric delirium that commands relaxation.
Average THC: 19.5%
Using its great psychoactive forces, this Sensi Star and Sour Diesel hybrid known as Death Star commands you to chill out as it imposes powerfully euphoric and sedating effects.
White Fire OG
Average THC: 20.5%
Born from The White and Fire OG, White Fire OG (also known as WiFi OG) is a force not to be trifled with. Uplifting euphoria launches your mood into the clouds with an elevated feeling that will shake creativity and happiness wide awake.
More potent cannabis strains
Looking for more strains? Check out this list of heavy-hitters.
Powerful sativa cannabis strains:
Powerful indica cannabis strains:
Powerful hybrid cannabis strains:
This post was originally published on October 22, 2015. It was most recently updated on April 6, 2020.
Get ready to have your tolerance challenged with these high-THC marijuana strains.
5 Top and Strongest Marijuana Strains of 2021
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.
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 2021
Realistically speaking, the following strains are not necessarily “new” strains for 2021. 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 2021. 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.
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 2021
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 for 2021. 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 2021 be the year? We can’t wait to find out!
Oh, and one last thing! 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 .
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It's a fact that weed is getting stronger, but these cannabis strains will blow your mind. We bring you the best and strongest marijuana strains of 2021