Highest THC Seeds

Enjoy Bigger Highs With Extreme THC Seeds

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High THC seeds

Do you seek highs that are stronger than anything you’ve ever experienced ? We can help. Our high THC strains can produce THC levels that pass 20%. These marijuana seeds deliver strong effects and we guaranteed they'll sprout, making ILGM where to order high THC seeds online. Choose from many options, such as Cherry Pie and LSD, but be prepared. These heavy hitters are some of the highest THC seeds online.

What is THC?

Tetrahydrocannabinol, called THC for short, is one of the active ingredients found in the cannabis plant. THC is responsible for a euphoric effect. It is also one of the oldest hallucinogens in the history of man.

Historical evidence shows that as far back as the first century AD, people were using THC as an herbal remedy. Modern research confirms that high THC cannabis possesses therapeutic properties that benefit people.

Cannabis strains include about 60 different chemicals, some of which provide a psychoactive effect. The two considered to be the most effective and potent are THC and cannabidiol (CBD). Evidence shows that CBD can counteract the psychoactive effects of THC, so choose cannabis strains with relatively low CBD levels for an incredible high.

The Benefits of THC

THC's therapeutic effects are well known. Multiple scientific studies show anecdotal evidence of Tetrahydrocannabinol relieving various conditions such as aches, lack of appetite and sleeplessness.

Expert growers have bred cannabis seeds with phenomenally high THC levels and low levels of CBD. Some of these hard-hitting marijuana strains have THC levels that average more than 22%. This leads to an optimal high without CBD countering the effects.

Strains this high in THC, like Super Skunk, are for seasoned cannabis users only, typically those with a high tolerance. This also means it takes less to achieve a high, meaning a better value, and more potency for hash, dabs, oils, and edibles. 

How Hard Is It To Grow Extreme THC Seeds

Most cannabis seeds with extreme levels of THC are hybrids of other strains. That means, how they grow depends on their parent. However, if you are looking for an extreme high without the extreme challenge of growing, choose autoflowering seeds. These high THC marijuana strains are easy to grow, produce great bud, and require minimal maintenance.

For a great place to start, try Robert’s (our founder) signature autoflowering feminized seeds: Gold Leaf Autoflower.

Getting the Most THC from Your Grow

If you’re putting in the time to grow your own marijuana, then you obviously want to make the most of it THC-wise. Starting with high THC marijuana seeds is great, but you should also use the right growing techniques.

There are several ways to do this. First, take care of your plants. Second, you'll need the right amount of water, humidity and nutrients to grow high THC cannabis. Most importantly, you must give your plant as much light as possible for big, healthy, and potent buds

Growing Indoors vs. Outdoors

Cannabis absorbs nutrients from fertilizer, but that’s not its primary source of fuel. Marijuana needs light to thrive. For trichome-covered buds, give your plant as much light as possible. 

When it comes to growing high-THC weed, you have two options: growing indoors or outdoors. While indoor growing is the most convenient (or only) option for many growers, it’s not the best way to give cannabis the light it needs. Instead, look to outdoor growing for the highest possible THC.

Cannabis thrives on sunlight. Even the best indoor grow lights can’t quite compare. Getting pure sunlight gives plants the energy and the time they need to support the big buds and high THC levels you’re looking for. Basically, growing marijuana outside leads to higher THC content in your weed.

What Is The High Like?

Good question! Every high is unique to its strain. Since many marijuana varieties are a hybrid of different plants, your experience will vary. Some strains increase happiness, while others produce great hunger, for example.

If you are looking for a specific experience, browse the large selection of marijuana seeds in our store. Each product page details what you can expect to feel. Need some inspiration? Here are the top picks from our team:

ILGM’s Favorite Seeds


Types of High THC Strains

You can coddle your plants all you want, but genetics plays the most important role in THC production. Your best bet is to start by searching for cannabis seeds with plenty of THC. The following strains are some of the best THC producers out there.

Purple Strains

Purple marijuana strains are known for their striking color. While some purple varieties can be a little tricky to grow, most of the difficulty is in achieving that impressive appearance. Choose feminized seeds in this category for some truly high THC weed.

Grandaddy Purple

This strain is an intense, pure indica plant that produces very high THC seeds - it can reach up to 23% THC. The buzz is deeply cerebral and very relaxing, leaving users completely unwound and content. Best of all, the strain is easy to grow indoors or out. 

Purple Haze 

Not many strains have a Jimi Hendrix song named after them. This fruity, grape-flavored strain is super easy to grow and offers a happy, bubbly high that’s practically psychedelic. It can provide up to 20% THC content. The energetic 70/30 sativa-dominant genetics make it perfect for a night out. 

Zkittlez

There aren’t many high THC seeds that are more rewarding to grow than Zkittlez. This candy-flavored herb is a perfectly balanced hybrid. It’s easy to grow and can produce up to 19% THC content in just eight weeks. The balanced genetics produces a warm, mellow buzz that relaxes both the body and the mind. 

Kush Strains 

Kush weed descends from the Kush region of the Himalayas. THC-dense and indica-heavy, growers love how easy to grow they are. Expect a heady, yet, relaxed buzz that’s especially apparent in these high THC strains. 

Blackberry Kush 

Blackberry Kush offers serious flavor and THC at the same time. This 80/20 indica-dominant strain can reach up to 20% THC. Finding these high THC seeds for sale is worth it for the easy growth and the mellow high that’s super relaxing. 

Purple Kush

This berry-flavored strain produces super high THC seeds. Purple Kush is a 100% indica strain that can reach up to 22% THC. It’s a master of complete relaxation that helps those with insomnia find the sleep they need. 

Bubba Kush

This rich, earthy strain can help you relax with a comfortable body and head buzz. It’s another strain with very high THC seeds, producing up to 22% THC. Bubba Kush is a high THC cannabis that is also easy to grow and harvest quickly, making it an excellent choice for beginners. 

Hybrid Strains

Hybrid strains combine sativa and indica effects for the best of both worlds. They offer a well-rounded experience and the seeds are generally easy to grow. That makes hybrid high THC strains one of the most diverse types of weed around.

Gold Leaf

It’s not often that you find high THC seeds for sale that are this good, but it should be expected from Robert Bergman. Our Gold Leaf weed is a 60/40 indica-dominant strain that offers euphoric and long-lasting creative and energetic effects. Even better, these feminized seeds can reach up to 23% THC.

Gorilla Glue

This famous strain is known for its super high THC seeds. Gorilla Glue cannabis seeds can reach up to 26% THC, and have impressive yields. This balanced hybrid produces a euphoric, yet super relaxing buzz. 

Green Crack 

There’s a good reason for the name Green Crack – this strain is so good it’s addictive. The 60/40 sativa-dominant strain has THC levels that can reach 22%. Its citrusy taste and energetic, long-lasting high make Green Crack cannabis seeds a West Coast favorite.  

High THC Auto-flowering Seeds

Autoflower strains are the easiest types of marijuana seeds to grow, by far. Our autoflowering feminized seeds don’t rely on light cycles to flower - they get it done in about eight weeks, no matter what. Most autoflowering strains are low in THC, however, these feminized seeds are the exception.

Bruce Banner Autoflower

Bruce Banner is known for being a powerful green monster, and the strain is no different. These cannabis seeds can produce THC as high as 25%. Bruce Banner autoflower seeds are 60/40 sativa-dominant and are known for their happy and relaxed high. 

Banana Kush Autoflower

Banana Kush autoflowering feminized seeds help you make the most of your grow with the least amount of effort. THC levels can reach as high as 27%. The euphoric high and delicious banana flavor also make it a big hit with weed lovers worldwide. 

Gelato Autoflower 

These feminized seeds are easy to grow, easy to smoke, and ready to get you buzzed. These 55/45 indica-dominant feminized seeds can produce marijuana with THC levels up to 20%. Choose these marijuana seeds for an uplifting high mixed with a sweet, creamy flavor. 

Are These Extreme THC Seeds The Real Deal?

Yes! We specialize in selling only the best cannabis seeds, no matter the strain. However, we don’t expect you to just take our word for it. That’s why every product page features the reviews of real growers, just like you. That way, you know what to expect and can decide which strain is right for you!

The Best Ways To Buy Extreme THC Seeds

You should only buy cannabis seeds from a trusted supplier. That’s why we tell everyone to visit our review page, where you'll find thousands of independent reviews. We ship high THC seeds USA and worldwide. With us, you can be confident that our feminized seeds are the best quality possible!

Want a deal? Our seed combination packages includes our most popular feminized seeds, at a discounted price! Check out our Heavy Hitters Mix Pack for a real knockout-bargain on high THC feminized seeds.

Need Help With Your Marijuana Seeds?

Worried you won’t be able to grow the highest THC marijuana from our feminized seeds? We get it. That first grow can be scary, but we can help. We’re the best place to buy high THC seeds because we offer everything from challenging seeds to easy-to-grow and manage autoflowering seeds. Regardless of your experience, you’re sure to grow some potent bud that you’ll love. 

We also don’t leave you hanging. To make sure every grow goes great, our site features grow guides that walk you through the process of delivering great yields, even with zero experience.

Discover Our Grow Guides

Need more help? Sometimes our guides don’t cover every question that you might have. Visit our support forum to post questions and get answers from expert growers!

Join Our Forums

Marijuana Fertilizer

Some of the best conventional and biological nutrients to boost your yield!

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Marijuana
Grow Kits

Whether you’re just starting out or just hunting for a bargain, these complete sets provide all the seeds, nutrients and boosters to get you through your grow.

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Seed
Variety Packs

Can’t choose what strains to pick? We have you covered! Try our mixpacks and choose from fruity, spicy, autoflower and more sets.

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