The best high-THC strains indoor growers need this year
Explore ILGM’s list of powerful strains.
Seasoned or novice grower, we all agree that one of the best aspects of growing cannabis indoors is being able to control the environment around our plants. If we properly regulate factors like light, climate, and air circulation, it’s almost a guarantee that our crops will produce some pretty amazing weed. But what’s the difference between pretty amazing weed and top notch weed? Everything starts with the right variety.
Great cannabis breeder and breeder Robert Bergman learned the importance of choosing the right strain when he started growing cannabis at home 25 years ago. What started with just five small plants grew into I Love Growing Marijuana (ILGM), a company that helps cannabis connoisseurs become successful cannabis growers. With 200+ grow guides on every stage of cannabis production, community-driven grow journals, and in-depth profiles of the best cannabis strains, ILGM is an amazing resource for growers of all levels.
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Some of the best strains for indoor growers include those high in THC. Growing THC-rich strains is perfect for those looking for highly potent rewards, and the unique indoor growing conditions allow these badass strains to be tweaked even further. Below are eight of the best high-THC strains for indoor growers this year, so take a look and see what is right for you.
When you’re ready to grow, head to the ILGM international store for seeds and anything else you need.
Gorilla glue
50/50 hybrid
Known for super high THC levels of up to 26%, Gorilla Glue is a popular hybrid strain that delivers deeply euphoric and relaxed vibes. Born from parent strains Chem’s Sister, Sour Dubb, and Chocolate Diesel, Gorilla Glue has a remarkably rich and earthy aroma, and its flavor profile makes it a popular edible strain. With a sturdy constitution and high disease resistance, this strain is fairly easy to grow – making it a great option for beginners.
Available from ILGM both feminized and autoflowering.
Zkittlez
70/30 indicates
As cute and colorful as the name suggests, Zkittlez is an indica-dominant strain that produces a complex, fruity aroma and beautiful buds in green, purple, and orange. A mix of grape ape and grapefruit, this strain offers up to 23% THC and a relaxing and uplifting effect that results in a perfectly balanced, mellow high. Generally compact and bushy, and quite resistant to mold and mildew, Zkittlez is a great strain for beginners to grow indoors. More experienced growers can easily train their Zkittlez plant to optimize its yield.
Available from ILGM both feminized and autoflowering.
GSC Extreme
80/20 indicates
GSC Extreme is a super potent, indica-dominant variant of the standard GSC. As a hybrid of parent strains Durban Poison and OG Kush, this strain has a high THC content of up to 21% and promotes feelings of relaxation, happiness and creativity. The aroma of the plant is reminiscent of notes of chocolate, mint and hints of spice, while its taste is both sweet and complex. This strain is relatively easy to grow, but indoor growers should keep an eye on space as these plants love to grow both tall and outdoors.
Available from ILGM both feminized and autoflowering.
Bruce Banner
60/40 sativa
Bruce Banner is known for packing a punch. With extreme THC levels of up to 25% and an intense hint of euphoria and energetic joy, this green monster creates a happy “hulk effect”. A mix of OG Kush and Strawberry Diesel, Bruce Banner’s smell and taste profile is undeniable, with a unique combination of fruit and diesel. Bruce Banner is also a hearty plant that produces very potent, huge yields.
Available from ILGM both feminized and autoflowering.
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Gold leaf
60/40 indicates
Grown by ILGM founder Robert Bergman, Gold Leaf is an indica-dominant strain that instills instant feelings of happiness, euphoria, and creativity. This strain has a THC content of up to 21% and has a uniquely pungent, earthy aroma and taste. Bergman designed Golf Leaf for growers of all levels to ensure high yields and easy cultivation both indoors and outdoors. When growing indoors, be sure to manage the plant with proper pruning and pruning to ensure a constant growth rate and optimal results.
Available from ILGM both feminized and autoflowering.
Blue dream
80/20 sativa
Born from Blueberry and Super Silver Haze, Blue Dream is one of the most popular strains out there, best known for its smooth, relaxing day high. The sativa-dominant variety from California has a THC content of up to 21% and a distinctive blueberry fragrance and taste profile with hints of vanilla and spices. The Blue Dream plant is slightly larger and its sweet scent can attract parasites, making it ideal for indoor growing.
Available from ILGM both feminized and autoflowering.
Banana kush
60/40 indicates
This light green, indica-dominant strain was born in the Golden State and is known for its cool, happy vibes. With incredibly high THC levels of up to 27% and a stimulating high, Banana Kush is popular with creative and social butterflies alike. Banana Kush is as sweet as a banana and promotes feelings of happiness, euphoria and relaxation. Growing Banana Kush is best for experienced growers as it requires constant airflow, pruning, and (ideally) indoor hydroponics.
Available from ILGM both feminized and autoflowering.
Autoflower super mix
Gorilla Glue Auto, Bruce Banner Auto, GSC Extreme Auto
Looking for the All-Star Roundup? The Autoflower Super Mix contains a collection of these top performing indoor grower strains in autoflowering strains – Gorilla Glue, Bruce Banner and GSC Extreme – so you can collect these high THC highlights in one pack.
Available from ILGM as a mix pack.
Be sure to research your local cannabis growing laws and regulations before starting your growing adventures.
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