20 Best and Strongest Marijuana Strains

We’ve compiled our ranking of the highest THC flowers to close this year with a real punch.

Each of the strains we cover in this article has not only a robust THC content but also superior genetics — you’re going to see some of the best marijuana strains of all time involved in their creation.

Hunting for high-potency marijuana buds? Read on to discover your options!

1. The Toad

A brand THC powerhouse, The Toad was bred by Tyson Ranch, the cannabis brand and manufacturer co-funded by Mike Tyson. 

This indica-dominant hybrid derives from Chemdawg OG and Girl Scout Cookies, which speaks pretty much about its quality. The Toad induces a euphoric high that hits you in a matter of seconds, smoothly transitioning into a relaxing body high.

The THC content of The Toad clocks in at 37% THC, containing 43% of total cannabinoids. You can find this strain — as well as other Tyson Ranch Products — mostly in California and Nevada.

2. Godfather OG

The second place on our list of the best and strongest marijuana strains of 2019 belongs to Godfather OG, a.k.a. The “Don of all aOGs”. 

The origins of Godfather OG are a bit unclear, although the strain is believed to originate from OG Kush, LA Confidential, Bubba Kush, and Granddaddy Purps.

Tested as high as 28% THC, Godfather OG was awarded the Best Indica winner at the 2015 High Times Cup. The bud is favored for its long-lasting high that’s mostly about strong body relaxation, sedation, and a very serious case of the munchies.

3. Girl Scout Cookies

Also known as GSC, Girl Scout Cookies is one of the most popular high-THC strains in the world. It’s the staple strain of the Cookie Family in Northern California, who created this strain by crossing OG Kush with F1 Durban Poison.

The THC content of GSC peaks at 28%. High Times has awarded this strain “The Best High-THC Strains” several times. Girl Scout Cookies induces a well-rounded high that involves a combination of cerebral euphoria with amazing body high and tons of positive energy.

This strain also has a few popular phenotypes, such as Thin Mint and Platinum Cookies.

4. Chem Berry D

Chem Berry D is the daughter of Chem 4 and Strawberry Diesel, with THC levels reaching up to 32%. 

Aside from being one of the strongest marijuana strains in the world, Chem Berry D is touted as a great sleep aid for those who suffer from a disturbed sleep-wake cycle as well as for people dealing with painful chronic conditions. At high doses, it can be highly sedating and produce a cerebral stone, so it’s better suited for evening use.

Chem Berry D also has an intriguing terpene profiles that involves a mix of chemical diesel notes with fruity fragrances.

5. Bruce Banner 2.0

Named after the mighty Hulk, Bruce Banner is another THC powerhouse, consistently exceeding 30%. It’s also an award-winning strain, with the precious High Times title of “one of the strongest strains on Earth.”

Bruce Banner 2.0 is a cross between Strawberry Diesel and Bruce Banner #3. Unlike the name suggests, this strain won’t turn you into a rampaging gamma-radiated beast. Instead, you’ll most likely experience powerful relaxation that can make you seek comfort in the nearest couch — many users describe the high from Bruce Banner 2.0 as body-melting.

6. Hulkberry

A cross between Strawberry Diesel and OG Kush, Hulkberry is a 65% sativa-dominant hybrid with a whooping THC content of 27%. This hard-hitting strain produces insanely resinous buds with strong berry flavors and aromas. 

The high from Hulkberry is mostly cerebral, with blissful euphoria combined with a jolt of positive energy that flows throughout your body. When taken in moderation, Hulkberry can provide a long-lasting, energetic high that is perfect for those who like to wake n’ bake or stay productive throughout the day.

7.White Fire OG (WiFi OG)

Witte Fire OG is a strain native to Southern California, where it was bred by OG Raskal Seeds. The resulting flower takes the stability of Fire OG and the tantalizing aromas and potency of The White.

According to lab tests from PSI labs, WiFi OG’s THC levels can be as high as 29%. If you’re looking for a potent bud with sedative effects and a unique aroma profile redolent of pine and fuel, WiFi OG is the best high-THC strain for you.

8. Grand Daddy Purple

Grand Daddy Purple is a strongly indica-dominating strain, perfect for dealing with insomnia and pain. With a super sweet grape flavor and soothing aromas, this strain makes for a nice treat for all flavor chasers out there.

This is definitely one of the strongest weed strains for aiding sleep and boosting appetite. Even those with a high tolerance to THC report that only a little of GDP goes a long way, so if you think you’ve reached your limits, this strain may make you reconsider your opinion.

9. Green Crack

With a self-explanatory name, Green Crack is an extremely potent sativa strain. Its name was actually invented by rap legend Snoop Dogg himself, although it has nothing to do with the effects of crack.

In fact, if you’re looking for an invigorating cerebral high that will take both your productivity and creativity to a new level, you’re going to have a great time with Green Crack. This strain is particularly useful for creative tasks and activities that require you to stay focused for a long time.

10. Wedding Cake

Wedding Cake is one of the strongest strains from California breeders. People are falling in love with its sweet flavors — the result of crossing Cookie Dough and Cherry Pie strains. The THC levels of this bud are consistently off the chart — with 25% on average.

The effects of Wedding Cake take hold primarily in the head, resulting in more fast-paced thoughts and intense euphoria that may be a bit too overwhelming for novice consumers. However, this strain is a great energy booster in the hands of experienced users, so if you already have some history of smoking high-THC strains, you may find this flower particularly useful.

11. Strawberry Banana

Strawberry Banana is a highly resinous cross of California and Netherlands genetics bred by DNA Genetics’ Reserva Privada. It comes from two popular parent strains — Banana Kush and Bubble Gum. Strawberry Banana has also won several cannabis cups due to its insane frostiness and robust THC production. A properly cured Strawberry Banana strain can yield massive yields of resin-coated ripe buds.

12. Brownie Scout

Brownie Scout is a proud creation of Green Thumb Industries that derived from Kosher Kush and Platinum Cookies. ACT laboratories has tested this strain at 37.5% THC, which makes it one of the strongest marijuana strains on Earth in 2019. The average THC content of this bud ranges in the mid-to-high- 30s on average.

Brownie Scout is a trending strain among medical cannabis patients. Due to the aforementioned THC levels, medical users consume it for pain relief, relaxing effects, and alleviation of stress and anxiety.

13. Scott’s OG

Brought to the cannabis community by Rare Dankness in 2010, Scott’s OG is a quite potent bud. Although it’s not anywhere close to the top 5 strongest marijuana strains, it surely packs a punch with 25% THC on average.

Not only that, but Scott’s OG has a decent overall production of cannabinoids — you can tell it by simply looking at its resinous buds. Redolent of citrus fruits and fresh pines, the aroma of the Scott’s OG strain heralds an invigorating high that will elevate your energy levels for a long time when dosed in moderation.

Although in the middle of the pack, Scott’s OG should be taken with a certain dose of caution, especially by novice consumers or those who are sensitive to the psychoactive effects of THC.

But then again, if you’re looking for the strongest marijuana strains, your THC tolerance is probably above regular levels.

14. Blue Dream

Blue Dream is another high-potency strain on our list that comes from California Breeders. It’s no wonder why many people consider California genetics one of the best on Earth — when you consider the sweet smell and taste of this strain, accompanied by feelings of happiness and wellbeing.

Blue Dream is actually one of the best-selling strains in several major American marijuana markets. It combines herbal aromas with piney notes and peppery undertones that are particularly detectable on the exhale.

With 21% of THC, Blue Dream allows both novice users and experienced consumers to benefit from its soothing effects. People mostly use it to relax after a stressful day or to get a much needed boost of creativity at work.

Blue Dream is also a very uplifting strain that pairs extremely well with social settings.

15. Ghost Train Haze

Ghost Train Haze was the winner of virtually every Cannabis Cup edition in 2011 for the highest THC content (28%). It was created by crossing Neville’s Wreck with Ghost OG and is known for producing a cerebral type of high that further provides the user with an invigorating body buzz enhancing focus, creativity, and energy levels. 

16. Chemdawg

Chemdawg is a phenotype of a strain called Dogbud, and its official name is actually “Chemdog”. 

Chemdawg is one of the most famous high-THC strains of all time and it actually has a rich history of use in the cannabis community. It was popularized by Grateful Dead at one of their concerts, quickly winning the hearts of all cannabis users at that time.

With up to 25% of THC, this well-balanced hybrid that combines a slight indica body buzz with a more intense cerebral sativa high. Chemdawg has an aroma reminiscent of diesel fuel, with earthy musk and some pine adding to its profile. When smoked, the buds taste sour but is relatively smooth.

17. Gorilla Glue #4

Also known as Gorilla Glue and Original Glue, this is the best phenotype of a strain created by the founders of Nevada’s GG strains.

Gorilla Glue #4 is the descendant of Sour Dubb and Chem Sister, a popular daughter strain of Chemdawg. 

GG #4 has tested between 27–30% THC. Despite its insanely high THC content, this strain has balanced relaxation and stimulating properties, proving particularly useful against all kinds of pain, insomnia, nausea, and lack of appetite.

When you open the jar of Gorilla Glue #4, you should be able to feel coffee-like notes accentuated by hints of berry, pine, and chocolate. GG4 is also a very pungent strain, so it may turn some heads around in public.

18. Green Gelato

Green Gelato is a cross between Thin Mint Girl Scout Cookies and Sunset Sherbet, both of which are considered one of the best US genetics. The THC levels in this strain can sit as high as 27% — producing a mix of strong, uplifting euphoria and a mellow buzz during the later stages of the high. Green Gelato boasts a very pleasant bouquet of aromas that combine sweet, earthy, and fruity notes.

19. Gorilla Zkittlez

This impressive hybrid is a result of crossing Gorilla Glue and Zkittlez marijuana strains. Not only does it have an impressive THC content of 24%, but it also carries a fresh, sweet, and fruity aroma that makes this strain love from the first waft.

Gorilla Zkittlez is a very relaxing strain that brings a sense of calm to both the body and mind. At higher doses, it shows its sedative side, so if you want to smoke more of its buds than usual, we recommend saving it for the evening.

20. Amnesia Haze

Amnesia Haze offers cannabis users a complex lineage of landrace genetics, crossing Afghani, Hawaiian, and Southeast Asian varieties. According to many online sources, Amnesia Haze boasts about 20–25% of THC.

Amnesia Haze is reported to offer a diverse range of effects, from relaxing uplifting to soothing and body-melting. The strain was awarded “The Best Sativa” title at the 2012 High Times Cannabis Cup.

How many of the strongest marijuana strains we’ve listed here have you tried so far?