most potent marijuana strain 2021

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

Strains & Products

Top 6 Strongest Strains to Smoke in 2021

2020 has been a year that people will never forget. It was a truly overwhelming one, full of many surprises and changes that have been completely unprecedented. To deal with this year, people turned to their favorite stress reliever marijuana, like never before. Even though everyone is wishing for a much smoother year to be in store for 2021, we’ve made a list of the most potent strains on the market, just in case you need to take the edge off.

What is THC?

We all love our beloved herb, cannabis, but do we know what it is and how it works in the body? To begin, THC, or tetrahydrocannabinol, is one of the 100+ known compounds found in the cannabis plant. THC is a cannabinoid, and another one you may know is CBD. THC is one of the oldest hallucinogens known to man and is the compound that provides the cannabis user the psychoactive feelings. THC often has gotten a bad reputation due to these psychoactive properties it possesses, but in recent years with the explosion of cannabis popularity, slowly erasing this stigma.

How Does THC Work on the Body?

THC affects both the mind and body through a little-known system called the endocannabinoid system. The endocannabinoid system regulates bodily functions and works with homeostasis to keep equilibrium within the body. It is crucial for your body that these two are functioning together, as they keep all of your vitals stable. The ECS helps to regulate memory, pain, motor controls, digestion and inflammation.

There are specific receptors within the system, the CB1 and the CB2 receptor, that are working to keep the above functions at bay. THC has an affinity to the CB1 receptor, found in large quantities in the brain. When THC binds to this receptor, it creates intoxicating effects and also mimics a natural chemical called anandamide, also known as the “bliss” molecule. THC can create feelings of euphoria, altered time and perception, lightheadedness, relaxation and sensory changes.

It is important to realize that receptors are like fingerprints, meaning they are unique for everyone. This explains why everyone has a very different reaction and feeling to THC.

Cannabis Strains with THC > 25%

Royal Gorilla

First up on the list of strains is this indica-dominant hybrid that comes in at a whopping 27% THC. This strain will give the user brief feelings of euphoria, coupled with a nice head buzz before delivering an intense couch-lock experience. The origins of this strain hail from some heavy hitters that consist of Sour Dubb, Chems Sister and Chocolate Diesel. Royal Gorilla possesses long-lasting effects that are great for treating chronic pain and fatigue with flavors that are citrusy, earthy and sweet. The terpenes present in this strain are limonene, caryophyllene and pinene, which are sure to pack a punch and an enjoyable high with a slight diesel exhale.


Next on our list of strongest weed strains for 2021 is this sativa-leaning hybrid, also known as “Lemonhead OG” that normally tests around 22-23% THC, all the way up to even 25% THC. Created from the strain Kush by Royal Choice Farms, expect an intense tingling sensation and a dizzying head high with zesty energy, perfect for elevating the mood. Lemonhead is among the popular strains that provokes a positive social behavior, filled with laughter and smiles that won’t make the user feel overstimulated. Filled with myrcene, limonene and caryophyllene, expect a flavor that is a bit citrusy and dank, with a pine taste on the backend.


This sativa with genetics of Trainwreck, Jack the Ripper and Trinity make Chernobyl debatably the highest THC strain, coming in at over 30% THC. Expect a dreamy, uplifted mood to last for hours that will keep you energetic throughout the day. With citrus and a distinct lime sherbet smell to accompany it, this strain will wash away all stresses and anxiety. High in the terpene terpinolene, this strain will deliver an overall positive experience, without being too much to handle.

Ghost OG

If you’ve been searching for 30% THC strains, this is the strain for you. This indica combines Afghani Indica with OG Kush and brings about a strong tingling feeling throughout the body, giving one a nice numbing feeling. Expect a couch-lock experience, coupled with a nice euphoric attitude in the mind, all while having a very notable citrus smell. With terpenes like limonene and myrcene, this strain is sure to aid in anxiety, insomnia and chronic pain.

The White

To round out our strongest and best weed strains for 2021, this often difficult to find hybrid averages around 24-25% THC and will sometimes come in at around 29%. This strain’s genetics are a bit mysterious as well, with origins through to be from the strain Triangle which produces a smooth, dank pine taste with an earthy aroma. This is a great strain for intense focus, with almost no body high to possibly slow you down. High in caryophyllene, this potent strain is not for the novice smoker. If you find yourself in a creative funk, light this strain up to get those thoughts flowing.


Chemdawg/Chemdog is among many of the strains of weed that have much ambiguity and mystery, especially around its origins. This hybrid that contains a massive 28% THC is the parent to a few very well-known strains such as OG Kush and Sour Diesel. Chemdawg will deliver a stinky, almost diesel-like taste that also has some earthy musk and pine odors. Terpenes present here are myrcene, limonene and caryophyllene that will deliver a potent and heavy body feeling and a cerebral experience that isn’t for the faint of heart. This is a great strain for stress, anxiety and even PTSD symptoms.

What is your favorite strain so far in 2021? Have you tried any of the strains listed above? Let us know in the comments below.

2020 has been a year that people will never forget. It was a truly overwhelming one, full of many surprises and changes that have been completely unprecedented. To deal with this year, people turned to their favorite stress reliever marijuana, like never before. Even though everyone is wishing for a much smoother year to be in store for 2021, we’ve