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strongest marijuana seeds

Powerful sativa cannabis strains:

Kosher Kush first blessed the world with its presence in 2010 and has been nabbing Cannabis Cup awards ever since. Its genetic background may be a mystery, but this strain’s keepers at DNA Genetics have refined a champion. Wrapped in a thick blanket of crystalline resin, you’ll hardly need a closer look to see that this tranquilizing indica is not one for the novices.

Original Glue is named for the stickiness of its resinous buds, and this strain certainly lives up to its name. Multiple Cannabis Cup awards serve to back up the legends of Original Glue’s potency, but we doubt you’ll need the proof once you’re stuck to the couch in stupefied contentment.

White Fire OG

Looking for a weed strain that will challenge your tolerance or stand up to stubborn medical symptoms? Readers ask us all the time which strains are the most potent, and while that depends on a variety of factors from how it was grown to the quality of genetics, we’ve put together a list of strains that have a reputation for heavy-handed euphoria.

Average THC: 19%

Using its great psychoactive forces, this Sensi Star and Sour Diesel hybrid known as Death Star commands you to chill out as it imposes powerfully euphoric and sedating effects.

Average THC: 20%

For an innocent-sounding name, Girl Scout Cookies offers a surprisingly hard-hitting effect. The body-high gradually spreads through your body, leading to long-lasting feelings of relaxation. She possesses strong sedative properties, making her a perfect weed for sleeping.

Doug’s Varin can handle both indoor and outdoor growing. As a Sativa variety, it needs warmth and sunlight in abundance. You’ll also need to provide adequate space, as this strain is known to top 200 cm. Due to its nutrient and growing requirements, this is one for growers with experience.

Just as mysterious as the Harry Potter character, it’s beloved for its potent and flavorful profile. Just one hit could send you to the magical world of Hogwarts.


Ghost Train Haze, or GHT, is a powerful Sativa-dominant strain that boasts rich and dense crystal-covered buds loaded with potent THC. It can trace its origins to the much-loved and highly potent Ghost OG and Nevil’s Wreck.

Berner’s Cookies comes from the rapper and cannabis developer Gilbert Millam Jr. (or Berner), a mainstay of the San Francisco scene and friend of Wiz Khalifa. He developed this strain to be bold, sweet and, most importantly, super potent. Something to match with a rip-roaring DJ set or to begin an after-party.

Gorilla Glue #4 is easy to grow and an ideal first-time option for those looking to cultivate a very potent strain. While both indoor and outdoor environments are fine, you can keep more of a handle of things with an indoor growing system. Hydroponic and nutrient-rich soil options are a great way to reap up to 600 grams per m2.

GG4 has been awarded numerous accolades over the years, including first place positions in many Cannabis Cups. It keeps going from strength to strength, being among the world’s most sought-after strains right now.

Photoperiod-sensitive cannabis strains require a 12/12 light/dark cycle to transition from vegetative growth to flowering. Our phenomenally potent feminized varieties all punch through the 20% THC threshold for high-grade cannabis. The following are the nobility of RQS feminized seeds.

You want the chronic? Well, whether you can handle it or not, you got it. This is no run-of-the-mill best-in-class cannabis roundup. These are the 10 most potent strains by category in the RQS collection. Nothing but royal dankness. Recreational growers will relish our super high-THC feminized and autoflowering strains. And for the CBD grower, we’ve included our finest CBD-rich strains that also offer impressive THC levels to boot.

Calling 2020 a challenging year would be an understatement. After weathering the storm, cannabis growers all over the world are welcoming spring 2021 with open arms. It’s time to embrace a new year, new opportunities, and another successful growing season. If you’re after enormous levels of THC and heavy yields, consider sowing our 2021 genetics.



The ever-popular Girl Scout Cookies teamed up with the newly minted cannabis celebrity Gelato. Joining dank forces in superhero fashion, the outcome of this pairing was made manifest in Cookies Gelato. Packing a punch with up to 28% THC, she’s pretty much as potent as you can get, delivering an immediate high that hits from the top down. Although not a smoke for novices, seasoned smokers love the cerebral, almost psychedelic buzz that comes with a nice relaxing touch. Sugary sweetness, a hallmark flavour of Cookies strains, makes it difficult to put the strain down, but then her massive potency helps keep you in line.