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Do you want to take your smoking sessions up a notch but don’t know which cannabis strain to choose? At GB, we have put together a selection of the strongest weed seeds, all boasting remarkable potency. We will present the characteristics of each in terms of cultivation, effects, and organoleptic properties. This article is not intended for beginners: these cannabis strains contain very high levels of THC!
Amnesia Haze
Amnesia Haze by Royal Queen Seeds comes from a cross between a Haze and an Amnesia. It’s a delicate strain that requires a lot of care. It’s best to grow it indoors since it’s very sensitive to cold, insects, and fungi.
However, its growth is vigorous, reaching 1.2 meters in height indoors and yielding around 600 g/m² after 12 weeks of flowering. Outdoors, Amnesia Haze plants are hardy. You’ll have to wait until December to harvest them. At GB, we highly recommend growing it in a greenhouse.
This strain is 70% sativa, which is reflected in its powerful mental and psychedelic effects. It stimulates an exaggerated imagination that will spark many ideas. But beware! It can sometimes cause amnesia… hence the name. It definitely deserves its spot in this list of the strongest weed seeds. Its Haze genetics give it a fruity and fresh flavor, accompanied by impressive sweet notes.
Gorilla Glue
A very famous strain in the United States: Gorilla Glue. It won the Michigan and Los Angeles Cannabis Cup as well as the High Times Cannabis Cup. This feminized strain is known for its very high THC levels (28%) and its abundant resin production, making it perfect for cannabis concentrates. It’s easy to grow, resistant, and offers good yields. What more could you ask for?
Gorilla Glue is 75% sativa, which is evident in its particularly euphoric effects that generate a massive wave of happiness, accompanied by a relaxing sensation. It’s perfect for smoking with friends. Very pleasant on the palate, it combines sweet and earthy flavors with spicy and lemony hints.
Indoors, it grows vigorously, producing medium-sized plants (between 0.8 and 1.3 meters) with a sturdy, well-branched structure. It’s advisable to use stakes and practice SCRoG to promote its branches. With 9 plants per square meter, you can harvest between 550 and 600 g/m² in two months of flowering.
Outdoors, these plants can exceed two meters in height and produce between 650 and 900 g/plant of very compact flowers by the end of September. You can grow it in any climate, but we still recommend using preventive products against fungi and other pests.
Bruce Banner: the strongest weed seed?
Bruce Banner was developed in Colorado from a cross between a powerful OG Kush and a selected strain of Strawberry Diesel. This variety has THC levels of up to 29%, making it one of the strongest weed seeds on the market. Its name comes from its potency, as Bruce Banner is the famous Marvel doctor who turns into the Hulk.
Although only 60% sativa, Bruce Banner’s effects are very typical of this type of cannabis. It gives you a boost of motivation and creativity, perfect for days when you feel off and unproductive. It offers a delicious pronounced earthy flavor, leaving a sweet aftertaste.
Indoors, this strain has a tall and highly branched structure, so it’s best to use stakes. With 12 plants per square meter, you can yield 450 g/m² in less than ten weeks of flowering. Outdoors, it can thrive even in the most humid regions due to its spaced internodes, which give it good resistance to fungi. It can exceed 2.5 meters in height, producing over 800 g/plant by late October.
Bruce Banner: The Strongest Marijuana Seed?
The Bruce Banner was developed in Colorado, from a cross between a powerful OG Kush and a selected variety of Strawberry Diesel. This strain’s THC level reaches 29%, making it one of the most potent marijuana seeds on the market. Its name reflects its strength, Bruce Banner being the famous Marvel doctor who transforms into the Hulk.
Although it’s only 60% sativa, the effects of Bruce Banner are very characteristic of this type of cannabis. In fact, it will give you a boost of energy and motivation, perfect for those days when you feel down and unproductive. It offers a delicious earthy flavor with a pronounced, sweet aftertaste.
Indoors, this strain has a long, very branched structure, so it’s best to use supports. With 12 plants per square meter, you can get 450 g/m² in under ten weeks of flowering. Outdoors, it can thrive even in the most humid regions thanks to its internodal spacing, which provides good resistance to mold. It can grow over 2.5 meters tall, producing more than 800 g/plant, and is ready for harvest by the end of October.
Jack Herer
The Jack Herer is a high-quality strain with an impressive reputation. It’s a perfect example of a balanced strain: it’s 50 % sativa and 50% indica. This balance is reflected in its buds, which are bulky and compact (very indica), and its mental effects, characteristic of sativas.
This cannabis strain emits a subtle floral aroma with earthy and incense notes. When smoked, the user can appreciate its Skunk-like fruity flavor, along with its citrus notes and Afghan undertones. Its THC level of over 20% produces a potent, cerebral effect along with a slight body heaviness.
The Jack Herer has a relatively short flowering period and produces a lot in a short time. Indoors, in about 70 days and with 6 plants per square meter in 7 to 11 L pots, it’s possible to harvest up to 450 g/m². It prefers warm, dry environments and benefits from a SOG system for better productivity.
Outdoors, this strain can grow over 2.5 meters tall, with a central stem loaded with resinous flowers. Its airy structure is perfect for avoiding excess humidity. By mid-October, you can harvest around 600 g/plant of resin-filled buds.
Critical Kush
What better cross than Critical Kush from Barney’s Farm? The result of crossing Critical with OG Kush, Critical Kush has it all, starting with its 25% THC level, which explains its extraordinarily potent effects. It’s a pure indica, so if you like this type of cannabis, Critical Kush is for you!
As mentioned, this cannabis strain is entirely indica: it induces deep bodily relaxation, helping reduce stress. However, its CBD levels prevent it from having a too sedative effect, allowing the user to maintain some clarity.
As for its flavors and aromas, Critical Kush stands out for its rich terpene profile. It exudes earthy aromas with pine undertones. In taste, you’ll notice its typical Kush flavor: lemon tart with woody notes.
This marijuana seed, strong in both effects and flavors, produces enormous resin-covered buds, especially indoors. Unfortunately, the density of its flowers makes it susceptible to mold. However, it is quite robust and resilient, producing up to 650 g/m². Outdoors, its short flowering period is appreciated, allowing for harvest by late September: you can get almost 700 g/plant, or even up to a kilogram of yield.
We hope this post has helped guide you, and that you’ve chosen among these potent marijuana seeds with strong effects, aromas, and flavors. To discover more, feel free to check out the genetics we offer in our online growshop!
