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.
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.
With at least 780 cannabis strains to choose from, deciding what the strongest weed out there is might be a tad bit difficult. Just as no two snowflakes are alike, no two weed strains are the same. Factors on which they differ include potency and appearance, as well as the different cultivation methods, effects, aromas, and tastes.
Although we cannot settle on just one marijuana strain, what we can do is make a list of the most powerful weed strains. So, if you are an experienced user, feel free to take your pick.
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.
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.
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.
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. Of course, this particular effect makes it one of our absolute favorites for insomnia and other sleep issues!
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.
White Widow
White widow exotic strain originated in the 90s in the Netherlands.
The breeders at that time mixed the South Indian Indica with the South American Sativa. There are also rumors that the white widow strain comes from Brazilian Sativa Landrace.
You are going to find this very popular strain all over the world. It is smoked and loved by a whole lot of cannabis-loving people.
You will get White Widow seeds feminized. The best way to grow it is indoors; it can reach 2 to 4 feet in height and will not need a very large growing room. You will need about 8 weeks for it to grow and start giving you flowers.
Although you can also plant it outdoors if you really wanted to, it will need a lot of sunlight for the plant to grow healthy. You won’t have to worry about diseases as it is naturally resistant to all kinds of diseases.
You can expect a harvest of about 18 ounces per three square feet of growing area.
With high high THC, it will surely give you a strong high. Smoking white widow will give you the following effects:
- Steady high
- Cerebral effect
- Vivid buzz
- Powerful
- Long-lasting high
- Ends with a mellow calm feeling
It is perfect to smoke this best strain in the happy times.
It fills you up with energy and joy.
The taste and smell of this poplar strain of cannabis seed will include the following flavors:
- Sugary
- Fruity
- Spice
- Earthy
- Peppery
- Funnel cake
- Sugary
- Lemon
- Woody
This Indica dominant strain is a mixture of so many different kinds of tastes and aromas, and this is must-try marijuana for everyone.
As this best strain of 2021 also has CBD in it, it has healing effects as well. This strain has been recommended by physicians to many different medical marijuana users for treating/helping things such as:
- Anxiety
- Depression
- Chronic pain
- ADD
- Insomnia
- PMS
Super Skunk
Super skunk was created by mixing the afghani indica with the skunk #1 strain. This a very powerful hybrid which consists of 80% indica dominant strain and 20% sativa genes.
It was created by Sensei seeds breeders to provide the customers with dense flowers along with both physical and mental high effect.
If you have a Mediterranean climate along with a lot of sunlight, then this plant is going to thrive outdoors. You can get the flowering on this strain in the months of September and October.
Outdoors, the super skunk Indica dominant strain can dish out a massive 21 ounces of flowers per plant. That is really cool, eh!
While growing indoors, the plant needs about nine weeks of time to fully mature and give you the flowers. You can expect to get about 18 ounces of marijuana flowers per square meter of your plantation.
As this strain of 2021 contains up to 20% of high THC levels in it, it can give you a boost of high along with ample relaxation.
The following are the effects this strain is going to give you when smoking it:
- Relaxation
- Calm
- Sleepy
- Full body high
- Strong cerebral high
- Clear head
- Laughter
As the name suggests, this marijuana smells like ammonia. Along with that, you are going to get a lot of different aromas and tastes such as:
- Cheesy
- Forest fungi
- Sweet
- Popcorn
- Tangy
- Fruity
With very high THC levels, and very low CBD, this strain has a low amount of healing properties. But it can surely help you with relieving stress, depression, and anxiety.
If you smoke it in quantity, it will even make you sleepy and help with insomnia.
Blueberry
Blueberry comprises of 20% sativa and 80% indica dominant characteristics. It can have up to 14% of THC levels in it and <1% of CBD.
DJ Shorts breeders made this awesome weed strain after mixing the Afghani with the Thai in their labs. The result was a strain that is loved all over the globe for its flavor and taste.
This Indica dominant strain is one of the Best Cannabis Strains in the world, and you have to try it asap.
Blueberry exotic pot strain can be easily grown by anyone with a little knowledge of plants. You can grow it indoors and outdoors both.
This Indica dominant strain will surely give you amazing rewards in terms of yields and taste. Be ready to pick out the flowers in the middle of summer if you are growing it outdoors.
You are going to get about 3 oz of delicious flowers per three square feet of the plantation. The overall height of the plant will be maximum 32 inches, so you can easily develop it inside a grow box, or a grow cabinet.
This is a strain that will give you an experience, which is a must-try for everyone. Be ready to get the following effects after smoking it:
- Relaxation
- Happiness
- Giggles
- Enjoyment/joyfulness
- Strain cerebral high
If you love smoking exotic cannabis strains, then this is at the top of the most exotic marijuana list. It is a complete blast of flavors when smoking it. You are going to notice the following aromas and flavor in this finest strain of 2021:
- Blueberry
- Sugary
- Fresh
- Pine
- Creamy vanilla
The medical marijuana community also love this popularstrain because of its healing properties. Smoking this pot can fight off anxiety, stress, and depression in you.
It can also help you with pain and insomnia as well. Other bene fits include relief from muscle soreness and chronic pains.
This list to change regularly year-by-year. Growers find new and improved ways to boost marijuana potency frequently.
Casino Kush is one of my favorites. It’s some potent stuff at 29.549% THC. It is in the Toronto area and is wonderful for pain relief, loss of appetite, insomnia, and has a great terpene profile.My favorites are Blueberry Indica at 26% and a great blueberry taste, L’Orange at 27% a pleasant Sativa with a great Orange flavor, Tangerine Dream a Sativa at 27.5% THC, Zeta a Sativa at 31% THC, Herojuana Hybrid at 25%THC.
Blueberry is the most potent strain I’ve ever smoked in my life. Blueberry gets you very high very fast. Mix it with some good music and this strain will deliver you strong and lasting high.