High THC Seeds

There are 196 products.

The “Best of the Best” when it comes to THCa content! Strains that are high in THCa, the psychoactive compound contained in cannabis, can deliver the most potent smoke for the ultimate in relaxation or powerful uplifting euphoria. Some cannabis strains with a particular high THC content can even make for outright psychedelic experiences!

But high THCa content doesn’t just mean that these cannabis varieties can be optimal for recreational users who seek the ultimate for chilling and relaxation. These strains rich in THC can also be a good choice for those users who need very potent medicine that can help with pain relief and other medical conditions.

The High THC strains category here in the Zamnesia web shop features these select strains that are known for their particular high THCa content. Find your favourite High THCa strain in no time here at Zamnesia!

Feeling overwhelmed by all the different cannabis strains out there? Use the Cannabis Seedfinder and find the strain that best suits your growing needs in 6 simple steps.

High THC Seeds - Click here for more info
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King Louis (Zamnesia Seeds) feminized

Royal genetics: King Louis descends from top-shelf Californian strains. Big flavors and aromas: Enjoy a mix of fresh, earthy pine terps. 24% potency: For a heavy-handed buzz. Short stature: Ideal for smaller spaces.

(8)
$29.99 $20.99
+13 Extra Gift Points

King Louis Automatic (Zamnesia Seeds) feminized

Express harvests: King Louis Automatic is ready for the picking just 10 weeks after germination. Great potency: Enjoy 24% potency and soothing effects. Delicious terps: Savor fresh aromas and flavors of pine, earth, and wood. Royal genetics: King Louis descends from OG Kush and LA Confidential.

(7)
$29.99 $20.99
+13 Extra Gift Points

White Runtz (Zamnesia Seeds) feminized

Super sweet: The Runtz line is loved for its bold candy aromas. Top-shelf Cali genetics: White Runtz was born and bred in the San Francisco Bay Area. Excellent resin production: Harvest big, dense, snow-white flowers. 24% potency: Enjoy a heavy, tingly body buzz ideal for beating tension.

(7)
$29.99 $20.99
+13 Extra Gift Points

White Truffle (Zamnesia Seeds) feminized

Complex flavors: Savor delicious notes of sweet autumn fruits and nuts. Full-body effects: Enjoy an initial cerebral hit that gradually soothes the entire body. Connoisseur genetics: White Truffle is a unique variety of Gorilla Butter. Plenty of potency: White Truffle buds pack up to 25% potency.

(7)
$29.99 $20.99
+13 Extra Gift Points

Blackberry Moonstones Auto (Blimburn Seeds) feminized

Love fruity flavors, uplifting effects, and top-shelf potency? Look no further—Blackberry Moonstones Auto by Blimburn Seeds delivers all of this and more in a fast, compact auto seed. In just 8–10 weeks, this budding hybrid will reward you with heavy harvests of rock-hard, frosty purple flowers that smell, taste, and smoke amazingly.

(13)
$42.00

Permanent Marker (Blimburn Seeds) feminized

Permanent Marker will leave a permanent impression on you as soon as you plant her seeds. This uber-potent feminized photoperiod strain is resilient, productive, and ideal for indoor and outdoor cultivation. The resulting buds are glittering with trichomes and offer sweet, candy-like flavors. With potency levels of up to 34%, a strong euphoric high rounds off the experience perfectly.

(8)
$42.00

Fat Bastard (Blimburn Seeds) feminized

If you're looking for a strain that will really deliver come harvest time, make space for Blimburn Seeds' Fat Bastard. This variety has the potential to pump out up to a whopping 31.5 oz/plant in outdoor conditions. What's more, her flowers are of unrivaled quality and power—full of resin and skunky aromas enhanced by citrus undertones.

(13)
$42.00

Ghost Train Haze (Zamnesia Seeds) feminized

Hardy Haze genetics: Ghost Train Haze descends from a legendary Haze cut bred by Nevil Schoenmakers. Excellent strength: Expect big buds packing 25% potency and delicious terps. Bold aromas: Ghost Train Haze smells of dank, spicy diesel. Heavy yields: Expect harvests of up to 21 oz/plant!

(101)
$29.99 $22.49
+13 Extra Gift Points

Rainbow Sherbet Automatic (Zamnesia Seeds) feminized

Spectrum of Flavors: Rich, sweet, fruity, and strawberry flavors fill the senses. Impressive Lineage: Bred from Pink Guava, Sunset Sherbet, and ruderalis. Effortless Cultivation: Easygoing growing experience. Perfect for all budding cultivators. Soothing Effects: 24% potency boasting relaxing sensations and uplifting moments.

(78)
$29.99 $22.49
+13 Extra Gift Points

Rainbow Sherbet (Zamnesia Seeds) feminized

Savor the rainbow: Enjoy waves of juicy sweetness. Time-tested genetics: The proud progeny of Pink Guava and Sunset Sherbet. Sky-high strength: Enjoy potency concentrations of 25%. Rewarding harvests: Pull in big yields indoors and out.

(34)
$29.99 $22.49
+13 Extra Gift Points

Gelonade (Zamnesia Seeds) feminized

Trusted and loved genetics: This hybrid is the lovechild of Gelato and Lemon Tree. Satisfying harvests: Reared in optimal conditions, Gelonade pleases growers with healthy yields. Exciting terpene profile: Refreshing citrus and spicy pepper combine to provide a fruity blend with a kick. Soothing effects: Excellent when you need to loosen up and relax.

(34)
$29.99 $19.49
+13 Extra Gift Points

Tangerine Dream (Zamnesia Seeds) feminized

When legends cross, they create legendary outcomes. Or at least that was the case when our breeders created Tangerine Dream from a select variety of classic strains. Boasting sweet citrus aromas and flavors, hardy grow traits, and a happy, uplifting high, there's little not to love about Tangerine Dream by Zamnesia Seeds. But don't take our word for it—order your seeds now and find out yourself.

(42)
$29.99 $22.49
+13 Extra Gift Points

Alien OG (Zamnesia Seeds) feminized

Alien OG combines genetics from Tahoe OG and Alien Kush. Born and bred in San Francisco, this Cali classic boasts a delicious pine and citrus aroma, versatile grow traits, and a potent, trippy cerebral buzz.

(43)
$29.99 $22.49
+13 Extra Gift Points

Wurlz F1 Automatic (Zamnesia Seeds) feminized

By harnessing the same genetic techniques that are used in commercial farming, the Wurlz F1 hybrid Automatic from Zamnesia offers a reliable and uniform growing experience that results in a bevy of buds rich in terpenes. Taking just 9–10 weeks from seed to harvest, this is a fast-growing cultivar that rewards growers with sweet, fruity nugs that showcase deeply soothing sensations.

(299)
$39.99 $23.99
+18 Extra Gift Points

Biscotti (Zamnesia Seeds) feminized

If you're shopping for a robust indica with a rich flavor profile, Biscotti is an excellent choice. Known for its impressive potency, this variety is a standout in terms of growth and yield. With attentive cultivation, Biscotti seeds are poised to deliver bountiful harvests.

(151)
$29.99 $22.49
+13 Extra Gift Points

Gelato Automatic (Zamnesia Seeds) feminized

Gone are the days when autos delivered tasteless buds, low robustness levels, and poor harvests. Gelato Automatic will change any misconceptions you may have about auto seeds. Expect a burst of flavor and impressive strength.

(137)
$26.99 $20.24
+13 Extra Gift Points

Frosted Guava Automatic (Zamnesia Seeds) feminized

Looking for an auto with great aromas, plenty of potency, and solid American genetics? Then look no further. Zamnesia's Frosted Guava Automatic delivers exceptional yields, a complex tropical fruit aroma, and a robust potency that's perfect for enthusiasts.

(160)
$26.99 $20.24
+13 Extra Gift Points

Apple Fritter Automatic (Zamnesia Seeds) feminized

Few autoflowering cannabis varieties deliver the potency, aromas, and excellent grow traits found in Apple Fritter Automatic. Backed by top-shelf US genetics, this seed is sure to quickly climb your list of favorite autoflowering strains.

(216)
$26.99 $20.24
+13 Extra Gift Points

Apple Fritter (Zamnesia Seeds) feminized

Zamnesia's Apple Fritter will enhance your mood, soothe your body, and stimulate your mind. Oh, and did we mention that it has the aroma of warm, homemade apple pastries? If you're looking for a potent, high-yielding strain with solid US genetics, make some room in your grow for Apple Fritter.

(136)
$29.99 $22.49
+13 Extra Gift Points

Pink Rozay (Zamnesia Seeds) feminized

Celebrate the qualities of Pink Rozay, a US-bred variety that stands out with its unique characteristics! This variety brings together the best of its parentage, offering a robust potency, a delightful social experience, and wine-like aromas that will entice you for more.

(194)
$29.99 $22.49
+13 Extra Gift Points

Wedding Cake (Zamnesia Seeds) feminized

Wedding Cake is a treat that can be appreciated for its unique qualities, no matter the occasion! This strain is not only known for its distinctive flavors but is also super easy to grow, with a flowering time of around 65 days. Discover the qualities of Wedding Cake for yourself!

(112)
$29.99 $22.49
+13 Extra Gift Points

Wedding Cake Automatic (Zamnesia Seeds) feminized

From the team at Zamnesia Seeds comes Wedding Cake Automatic. These cannabis seeds are not only a joy to grow but also offer a delightful experience—thanks to their impressive flavour profile. An easy, breezy specimen in the grow room, she's perfect for beginners looking to get their feet wet, and experienced growers seeking a hassle-free home project.

(372)
$24.99 $18.74
+11 Extra Gift Points

Runtz (Zamnesia Seeds) feminized

Discover the excitement with our latest offering—a cultivar that's been a hit in California. This blend of two renowned varieties is known for its delightful flavor, robustness, and well-rounded characteristics. It's a high-yield, quick-flowering plant that's sure to impress. Experience the sensation yourself with these seeds!

(757)
$32.99 $24.74
+14 Extra Gift Points

Bruce Banner 3 (Zamnesia Seeds) Feminized

Bruce Banner #3 is known for its strong and invigorating qualities that foster creativity and focus. This robust variety is gaining popularity for its ability to enhance productivity and inspire new levels of innovation. 

(222)
$32.99 $24.74
+14 Extra Gift Points

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A guide to high-THC strains

A guide to high-THC strains

Are you looking to purchase cannabis seeds with extreme THC levels? Well, you’re about to discover some of the best strains to suit your desires. However, before we introduce you to our superstar weed varieties, we think you’ll find this brief guide helpful for your cultivation endeavours. Below, find out the key benefits of growing strains loaded with THC, and how to raise them.

Benefits of strains with a high THC content

Why do growers choose to cultivate high-THC strains in the first place? Well, part of the answer is quite obvious: they contain more THC! Higher quantities of the psychoactive cannabinoid means it takes less plant material to experience equally potent effects. With weaker varieties, many experienced smokers might need a whole joint to feel suitably high, whereas with a high-THC strain, a single bong hit might suffice. Overall, a stash of high-THC flowers lasts longer. Those with a particularly high tolerance can also use them to make extremely powerful edibles and extracts to really scratch their itch.

Growing cannabis with higher THC levels

You might think that growing high-THC cannabis takes some kind of special approach—but you’d be mistaken. You can grow these plants in the same way as other varieties. Strains high in THC are innately “wired” to churn out much higher quantities of the cannabinoid. However, this doesn’t mean you can get away with taking shortcuts. Ultra-potent plants still depend on powerful lights, high-quality organic nutrients, and a mindful watering schedule to express their full genetic potential.

Buy the best high-THC genetics available

Do you want to use less of your stash every time you get high? Or maybe your favourite strains aren’t hitting like they used to? Well, what are you waiting for? High-THC strains from Zamnesia will take your experience to another level, without demanding any more work in the grow room or garden. To get you started on your journey, here are some of the strongest varieties you can get your hands on:

  • Bruce Banner 3: Brace yourself for THC levels of 27% and monster yields
  • Gorilla Glue: This beast contains 26% THC and fruity and earthy terpenes
  • Banana: Experience tropical vibes and THC levels of 28%
  • Larry Bird Kush: With a THC content of 26%, this strain will have you giggling
  • Wedding Cake Automatic: Prepare to enjoy 24% THC after a rapid growing cycle