CKS LC close button Crop King Seeds Live Chat
High Thc Cannabis

Marijuana Strains with the Highest THC

Walk into any dispensary and ask for the strongest strain in the store. What do you think they will reach for? The question is a trick in and of itself: potency is defined by many different aspects of cannabis. With that being said, there is one element that can consistently define how a user will experience their weed: THC.

What is THC?

Tetrahydrocannabinol is also known as THC and it is the psychoactive component of marijuana that so many recreational users enjoy. More than just a powerfully cerebral substance, THC can provide support for several important health situations including

  • Boosting Appetite
  • Eliminating Nausea
  • Relieving Pain
  • Reducing Inflammation / Swelling
  • Improving Muscle Function

Cannabinoid receptors are found throughout the brain regions involved in memory, balance, sense of time, and perception. According to the National Institute on Drug Abuse, these receptors are where THC binds as it stimulates our brain, impacting all of our senses. 

Whether you are looking for therapeutic relief or a recreational strain to enjoy, you’ll be interested in our compilation of the top ten marijuana strains with high THC levels.

Top Ten Marijuana Strains with High THC Levels

Whether you are looking to germinate some seeds or just lay the groundwork for future research, cannabis enthusiasts looking for the top strains with high THC levels will do well to pay attention!


A classic for the ages, Gelato is a potent strain that has gained a massive following over the past ten to fifteen years. The delicious cross of Sunset Sherbert and Thin Mint Girl Scout Cookies, Gelato brings about an Indica-dominant profile that is brimming with terpenes and a doughy taste. Gelato sports THC levels up to 27% and can provide more than 500 grams outside with more than 700 grams of production for indoor growers.

Banana Kush

Crossbred between Skunk Haze and Ghost OG, Banana Kush may not deliver the highest THC levels on the planet, but it makes every percentage point count.

Averaging around 21% THC, Banana Kush not only gets you properly medicated but also provides a body high that leads to huge sparks of creativity. Banana Kush has its hallmark banana notes hidden behind herbal and earthen notes. 

Girl Scout Cookies

Almost as tasty as the baked goods it is named after, Girl Scout Cookies is a legendary strain within the cannabis community for more than just its delicious flavor, but also its soaring THC content. Girl Scout Cookies is considered something akin to cannabis royalty. Powerfully relaxing yet mentally stimulating, GSC is a great strain for relief from anxiety, insomnia, and depression.

Bruce Banner

For a strain that makes you want to Hulk out just a little, Bruce Banner is a perfect choice. Bruce Banner Feminized Marijuana seeds provide a Sativa-leaning hybridized spark thanks to its blend of OG Kush and Strawberry Diesel.  Not quite enough to turn you green, this energizing strain has become a wake-and-bake legend.

When cultivated indoors, Bruce Banner can yield up to 500 grams within a flowering period of just 9 to 10 weeks. Bruce Banner grows quite tall and requires plenty of light, so be sure to accommodate both needs.

Granddaddy Purple

Considered a ‘top shelf’ Indica, Granddaddy Purple sports THC levels surpassing 23% on average. The child of Purple Urkle and Big Bud, Granddaddy Purple is known as much for its fantastic high and soaring THC levels as it is for its unique taste profile.

With a euphoric high that combines with a sense of physical relaxation, Granddaddy Purple seeds are the perfect choice for cannabis advocates trying to upgrade their crop production. Granddaddy Purple is a mood-lifting strain that is ideal for users who want to address symptoms relating to depression and anxiety.

Chemdog #4 Feminized

With impeccable genetics, it is impossible to ignore what Chemdog #4 Feminized seeds can do. A fantastic addition to any grow room, Chemdog #4 is an ever-so-slightly Indica-leaning hybrid that expresses THC contents beyond 28%. Heavy-hitting with a body high that is unrivaled, this strain can also trigger leaps of imagination and creativity as well as euphoria. Novice growers should be careful with this hybrid as it is susceptible to both mildew and mold.

Crown Royale

Crown Royale feminized seeds are a signature crop of Crop King Seeds. Ideal in both indoor and outdoor growing locations, Crown Royale provides a potent Indica experience that starts with a pungent smell and ends with an unbelievable taste and incomparable high.

Crown Royale has high levels of both THC and CBD to provide an entourage effect that many other traditional Indica strains cannot emulate.

To grow Crown Royale at home, consider creating plenty of space for upwards growth. A bushy plant, Crown Royale is commonly grown by medicinal and recreational cannabis users in equal measure.

Sativa Star

One of the rare Sativa-dominant strains in today’s discussion, Sativa Star shines brightly with a 90/10 Sativa dominance. What Sativa Star lacks in a quick-growing process (14 weeks to flower) the strain makes up for through a bountiful yield that can provide up to 600 grams when grown outdoors. THC levels commonly hover around and soar beyond 23% on occasion. A functional sativa, Sativa Star is not overtly psychedelic, which makes it ideal for novice consumers.

White Widow

As one of the most popular cannabis strains on the planet, White Widow marijuana seeds will lead to an Indica-dominant plant that has already won the High Times Cannabis Cup multiple times. With THC levels exceeding 25%, it doesn’t take long for mental stimulation to overtake the physically relaxing feelings that White Widow imparts.

More than just a heavy-hitting strain, White Widow is a seriously beautiful plant to cultivate. White Widow is ready to harvest within eight weeks with a yield surpassing 400 grams on average.

Grape Ape

Medicinal cannabis enthusiasts are already aware of the pain-relieving properties that Grape Ape can provide.  More than just a pungent strain with grape and berry notes, Grape Ape hits like a truck as it overwhelms consumers with a sense of physical relaxation and mental wellbeing. Grape Ape flourishes both indoors and outdoors with a shortened flowering time and a heightened yielding capability.

Recent news:

One Response

  1. which one flowers sooner, “fast version” strains or autoflower strains?
    Thanks for any reply
    Cody J

Leave a Reply

Your email address will not be published. Required fields are marked *

Are You 18 Or Over?



No By clicking yes, you certify that you are over 18. By using this website, you agree to our legal disclaimer.
We will inform you when the product arrives in stock. Please leave your valid email address below.

Product Search

Popular Products

× How can I help you?