The Top 5 Strongest Cannabis Strains — 2020 Update

The Top 5 Strongest Cannabis Strains — 2020 Update

While we’ve had access to plenty of strong cannabis strains for quite some time, there are new advances in the field every day. We’re happy to present an updated list of some of the most potent varieties of the bunch. Featuring new strains like Cookies Gelato and Triple G, as well as some of the old-timers!

Determining the strength of cannabis is not always straight forward, once you have chosen which strain you would like to use, there are also a number of factors which will affect the THC content of the bud.

The main external factors influencing the strength of your bud are: Location (e.g. indoor vs outdoor), growing medium (e.g. soil or hydroponics), nutrient levels, light source, temperature & humidity and carbon dioxide levels.

Although there are many methods of growing cannabis, they all come with a different set of pros and cons … for example, if you wanted to grow your plant under some of the UVB spectrum, you would either have to find a nice mountain close to the equator or purchase some UVB emitting LEDs. Both of these methods have problems; LED lights are rather expensive, and walking up a mountain to grow your bud will also leave you feeling pretty low on energy.

Genetics also affect the strength of the plant. Genetics are what holds all the information about the plant. How much THC and CBD it produces, how it smells and tastes and how it grows. Cannabis displays a mix of traits from their parent strains just like humans.

Stable genetics produce predictable features passed down from parent strains, whereas unstable genetics can often give the offspring unpredictable features which can be difficult to manage.

Nowadays, cultivators are able to select desired characteristics of growth, appearance and effect. This can be really useful in finding a strain that’s right for you and your needs.



Combining the sugary sensations of Girl Scout Cookies and Gelato, the aptly named Cookies Gelato is a recent entry on this list and has more than earned its spot. You see, besides inheriting a sweet flavor and aroma from its parent strains, it’s got a lot of THC; around 28%, to be exact. Bringing about a euphoric rush with a relaxing touch, this hybrid makes sure you don’t go too deep in one direction, even if you’re headed for the stars. Needless to say, this might not be for you if you’re a novice smoker, but those with a bit of a tolerance will have an unforgettable time with this luxury treat.

Cookies Gelato

Genetic background Girl Scout Cookies X Gelato 33
Yield indoor 500 – 600 gr/m2
Height indoor 80 – 130 cm
Flowering time 8 – 9 weeks
THC strength THC: 28% (approx.) / CBD: Low
Blend 50% Sativa, 50% Indica
Yield outdoor 550 – 650 g/per plant (dried)
Height outdoor 140 – 180 cm
Harvest time Mid October
Effect Relaxed, Physical


It’s only recently that Gorilla genetics have been made available outside the United States. Your opportunity to experience this knockout strain is finally here with Royal Queen Seeds’ Royal Gorilla. These pleasantly light-green buds have been known to reach 26% THC content. This balanced hybrid was stumbled upon by breeders. Its incredibly euphoric high comes with mouth-watering citrus flavours with pine tones. Its balanced high makes it suitable for therapeutic use. Order now and meet the strain you didn’t realise you needed in your life

Royal Gorilla

Genetic background Sour Dubb x Chem Sis x Chocolate Diesel
Yield indoor 500 – 550 gr/m2
Height indoor 90 – 160 cm
Flowering time 8 – 9 weeks
THC strength THC: 27% (approx.) / CBD: Low
Blend 50% Sativa, 50% Indica, 0% Ruderalis
Yield outdoor 550 – 600 g/per plant (dried)
Height outdoor 130 – 170 cm
Harvest time Middle of October
Effect Cerebral and relaxing


Colorado was among the first states in the US to legalize recreational marijuana. The first-movers of that state have been cultivating some of the most impressive hybrids known to humanity. A particular standout is already taking dispensaries by storm, and has made its way to Europe and beyond. HulkBerry has attained cult status in a short amount of time following its success at the 2014 High Times Cannabis Cup. It was unmistakable how strong this strain was, with a THC content surpassing 28%. The breeding of OG Kush with Strawberry Diesel means a powerful mix of indica and sativa effects will accompany a delicious fruity taste.


Genetic background
OG Kush x Strawberry Diesel
Yield indoor 400 – 450 gr/m2
Height indoor 80 – 140 cm
Flowering time 8 – 9 weeks
THC strength THC: 27% (aprox.) / CBD: Low
Blend 65% Sativa, 35% Indica, 0% Ruderalis
Yield outdoor 650 – 700 g/per plant (dried)
Height outdoor 160 – 200
Harvest time Late September
Effect Clear and energetic


Yes, it’s a coincidence that the name of this strain is similar to that of the WWE wrestler, Triple H. However, that doesn’t mean there are no similarities. For one, they could both knock you down if you aren’t careful. Although Triple G is not the most potent on the list (with 26–28% THC), the fact that it’s indica-dominant means it’ll do more than get you relaxed and euphoric—it can easily make you fly away. If you are a medicinal user and you’re experiencing insomnia, chronic pain, or appetite loss, Triple G might go a long way in easing your symptoms. Expect the taste of berries, candy, and chocolate to hit your tongue, while spice, diesel and earth scents waft around you.


Genetic background Gorilla Glue #4 X Gelato 33
Yield indoor 500 – 575 gr/m2
Height indoor 90 – 140 cm
Flowering time 8 – 9 weeks
THC strength THC: 26% (aprox.) / CBD: Low
Blend 15% Sativa, 85% Indica
Yield outdoor 550 – 650 g/per plant (dried)
Height outdoor 130 – 180 cm
Harvest time Mid October
Effect Clear High, cerebral


In California alone, there are different regions competing to cultivate the best cannabis. Out of the San Francisco Bay Area comes Green Gelato, a must-try for any cannabis-lover with a sweet tooth. The parent plants Sunset Sherbet and Thin Mint Cookies are already famous for their sweet flavor and strong high. Combining them has led to something even sweeter, with a THC content passing 25% to boot. This intoxicating mix of fruity tones, sharp mint, spicy kush, and warm cookie flavor has to be tasted to be believed. Expect an uplifting high that chills your body out with arresting couch-lock

Green Gelato

Genetic background Sunset Sherbet x Thin Mint Girl Scout Cookies
Yield indoor 500 – 700 gr/m2
Height indoor 80 – 120 cm
Flowering time 8 – 10 weeks
THC strength THC: 27% (aprox.) / CBD: Low
Blend 45% Sativa, 55% Indica, 0% Ruderalis
Yield outdoor 750 – 800 g/per plant (dried)
Height outdoor 150 – 200 cm
Harvest time Early October
Effect Physical, clear high

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