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High THC seeds

There are 672 products tagged as High THC seeds

The strains with the highest THC levels, the psychoactive component of cannabis.

THC, acronym for TetraHydroCannabinol, is the primary cannabinoid responsible for the effects of cannabis. It is secreted by resin glands known as trichomes, and its concentration directly influences the psychoactive properties of both cannabis herb and resin.

Therapeutic use of THC

In addition to its psychotropic effects, THC has therapeutic properties that make it valuable in treating various conditions. Its benefits have led to the official recognition of cannabis and its derivatives as medicine in many countries, including the US and Canada.

Cannabis is used by many patients for its positive effects in treating a wide range of diseases and symptoms, such as:

  • Tourette's Syndrome (reduction of spasms)
  • Alleviating nausea and vomiting
  • Stimulating appetite
  • Pain relief (especially for chronic and neuropathic pain)

Here, we offer a selection of regular and feminised strains with THC levels exceeding 25%, classifying them as highly potent. To put this in perspective, the average THC level in many strains today is around 15-20%, which is already considered THC-rich.

While THC acts in synergy with other cannabinoids like CBD or THCV, as well as terpenes, a high THC concentration remains a strong indicator of a strain's potency.

High THC level, maximum potency

Some of the most potent strains include Gorilla Glue, which can reach a THC level up to 30%, Y Griega up to 27%, or Blisful Wizzard, which can reach an astounding THC level up to 34%.

You can find the most TetraHydroCannabinol-rich strains in our catalogue here. Enjoy them!

Featured products in High THC seeds

UP TO 20%

Auto Critical Mass

Advanced Seeds

From 7.20€ 8.00€

Frozen Black Cherry

Anesia Seeds

From 38.00€

New

From 20.00€

UP TO 20%

Critical Mass

Advanced Seeds

From 7.20€ 8.00€

New

From 20.00€

From 30.00€

Featured offers High THC seeds

UP TO 20%

Sour Ripper

Ripper Seeds

From 6.30€ 7.00€

-10%

From 13.50€ 15.00€

UP TO 15%

Colombian Jack

Kannabia

From 9.35€ 11.00€

UP TO 30%

Bruce Banner Auto

Sweet Seeds

From 21.00€ 30.00€

UP TO 20%

Slurricane

Advanced Seeds

From 7.20€ 8.00€

UP TO 20%

From 11.70€ 13.00€

Latest in High THC seeds

New

From 14.00€

New

Permanent Rainbow

Elev8 Seeds

55.00€

New

Star Power

BSF Seeds

99.00€

New

Grape Venom

Black Tuna Seeds

70.00€

New

Ocean Spray

Black Tuna Seeds

70.00€

New

Tropicanna Punch

Black Tuna Seeds

70.00€

Buy High THC seeds

672 products Filter tune
High THC seeds
UP TO 20%

Auto Critical Mass - Advanced Seeds

Alchimia is happy to present Auto Critical Mass by Advanced Seeds, the automatic version of the famous [...]

  • 1 seed 8.00€ 7.20€
  • 3+1 seeds 16.50€ 13.20€
UP TO 20%

Critical Mass - Advanced Seeds

Alchimia is delighted to present Critical Mass by Advanced Seeds, an early, easy-to-grow, and highly productive cannabis. It is ideal for those se [...]

  • 1 seed 8.00€ 7.20€
  • 3+1 seeds 17.50€ 14.00€
New

Blue Zushi Limited Edition - Growers Choice

Alchimia is glad to present Blue Zushi by Growers Choice, a cannabis strain with complex terpenes and smooth smoke. It offers berries, caramel or even cheese and m [...]

  • 3+1 seeds 20.00€
  • 5+2 seeds 30.00€
  • 10+4 seeds 55.00€
  • 25 seeds 125.00€

Frozen Black Cherry - Anesia Seeds

Alchimia is glad to present Frozen Black Cherry by Anesia Seeds, a variety characterised by berries aroma, an exceptional resin production, a THC [...]

  • 3 seeds 38.00€
  • 5 seeds 59.00€
  • 10 seeds 117.50€
  • 25 seeds 235.00€

Triploid F1 Iced Sangria - Growers Choice

Alchimia is delighted to present Triploid F1 Iced Sangria by Grower's Choice, a strain offering all the advantages of a triploid variety (higher y [...]

  • 3+1 seeds 30.00€
  • 10+4 seeds 90.00€
UP TO 20%

Banana Purple Punch Auto - Fast Buds

Alchimia is glad to present Banana Purple Punch Auto by Fast Buds Seed, one of the auto-flowering plants with the highest THC concentration up to 30% [...]

  • 1 seed 13.00€ 11.70€
  • 3 seeds 36.00€ 28.80€
  • 5 seeds 55.00€ 44.00€
  • 10 seeds 99.00€ 79.20€
Promo

C.Banana - Philosopher Seeds

Alchimia is delighted to present C.Banana by Philosopher Seeds, a variety based on the original Banana OG, a plant with a high THC content and a s [...]

  • 3 seeds 26.00€ 2x1
  • 5 seeds 42.00€ 2x1
  • 10 seeds 70.00€ 2x1
UP TO 20%

Fat Bastard Auto - Blimburn Seeds

Alchimia is pleased to present Fat Bastard Auto by Blimburn Seeds, an auto-flowering strain developed to offer an easy to grow, productive, very fragrant, and equa [...]

  • 3 seeds + 1 Stoned Panda 32.00€ 25.60€
  • 6 seeds + 2 Stoned Panda 49.50€ 39.60€
  • 25 seeds 195.00€
New

Permanent Whitemarker Auto - Growers Choice

Alchimia is delighted to present Permanent Whitemarker Auto by Growers Choice, a powerful automatic plant with high THC content and very high yields. This variety [...]

  • 3+1 seeds 20.00€
  • 10+4 seeds 55.00€
  • 25 seeds 125.00€
UP TO 20%

Fat Bastard - Blimburn Seeds

Alchimia is happy to present Fat Bastard by Blimburn Seeds, an easy-to-grow cannabis strain that gives off a fruity, skunky aroma. It is character [...]

  • 3 seeds + 1 Stoned Panda 32.00€ 25.60€
  • 6 seeds + 2 Stoned Panda 49.50€ 39.60€
  • 25 seeds 195.00€

Triploid F1 Tropicana Cherry - Growers Choice

Alchimia is delighted to present Triploid F1 Tropicana Cherry , a revolutionary 50/50 hybrid strain developed by Dutch seedbank Growers Choice. It [...]

  • 3+1 seeds 30.00€
  • 10+4 seeds 90.00€
Promo

C.Banana Auto - Philosopher Seeds

Philosopher Seeds is pleased to present its new auto-flowering C.Banana. This strain is renowned for [...]

  • 3 seeds 25.00€ 2x1
  • 5 seeds 38.00€ 2x1
  • 10 seeds 68.00€
  • 25 seeds 150.00€
-20%

Frostbanger Auto - Fast Buds

Alchimia is happy to present Frostbanger Auto by Fast Buds, a cannabis strain with high THC levels and sweet, creamy aromas. An encounter between Chemdawg and Gori [...]

  • 3 seeds 36.00€ 28.80€
  • 10 seeds 99.00€ 79.20€

Triploid F1 Sticky Wasabi - Growers Choice

Alchimia is delighted to present Triploid F1 Sticky Wasabi, a hybrid cannabis strain developed by Growers Choice, combining advanced genetics with innovative tripl [...]

  • 3+1 seeds 30.00€
  • 10+4 seeds 90.00€
UP TO 20%

Auto Bruce Banner XXL - Advanced Seeds

Alchimia is happy to present Auto Bruce Banner XXL by Advanced Seeds, the automatic version of [...]

  • 1 seed 8.00€ 7.20€
  • 3+1 seeds 24.50€ 19.60€
  • 5+2 seeds 42.00€ 33.60€
  • 25 seeds 105.00€ 94.50€

Imperium X - Anesia Seeds

Alchimia is glad to present Imperium X by Anesia Seeds, one of the cannabis varieties with the highest THC content on the market, [...]

  • 3 seeds 36.50€
  • 5 seeds 58.00€
  • 10 seeds 112.50€
  • 25 seeds 225.00€
Promo

Permanent Marker - Philosopher Seeds

Philosopher Seeds has hybridised the renowned Permanent Marker cannabis strain with Lemon Cherry Gelato, the same parental used in [...]

  • 3 seeds 27.00€ 2x1
  • 5 seeds 43.00€ 2x1
-20%

Lemon Cherry Cookies Auto - Fast Buds

Alchimia is glad to present Lemon Cherry Cookies Auto by Fast Buds, a strain representing the pinnacle of modern auto-flowering strains, combining exceptional pote [...]

  • 3 seeds 36.00€ 28.80€
  • 10 seeds 99.00€ 79.20€
UP TO 20%

Strawberry Banana Auto - Advanced Seeds

Alchimia presents Auto Strawberry Banana by Advanced Seeds, the automatic version of the famous Strawberry Banana. It is a vigorous plant [...]

  • 1 seed 8.00€ 7.20€
  • 3 seeds +1 20.00€ 16.00€
  • 5 seeds + 2 35.00€ 28.00€
  • 25 seeds 99.00€ 89.10€
Promo

Key Lime Pie x Do-Si-Dos - Philosopher Seeds

Alchimia is pleased to present Key Lime Pie x Do-Si-Dos by Philosopher Seeds, a variety based on Cookies genetics. It offers sweet exotic lime cream aromas, hard b [...]

  • 3 seeds 23.00€ 2x1
  • 5 seeds 36.00€ 2x1
  • 10 seeds 65.00€ 2x1
  • 25 seeds 140.00€ 112.00€
Promo

GG#4 Auto - Philosopher Seeds

Alchimia is delighted to present GG#4 Auto by Philosopher Seeds, an automatic version of Gorilla G. #4, the acclaimed US cannabis strain. It is a variety with [...]

  • 3 Seeds 23.00€ 2x1
  • 5 Seeds 36.00€ 2x1
  • 25 seeds 140.00€ 112.00€

Chaos Cake Auto - Anesia Seeds

Alchimia is pleased to present Chaos Cake Auto, a high-yielding auto-flowering cannabis strain with high THC content, sweet berry flavours, and excellent suitability for extraction [...]

  • 3 seeds 31.50€
  • 5 seeds 48.50€
-20%

Guava Auto - Fast Buds

Fast Buds presents the new Guava Auto marijuana strain, a sweet and fruity genetics ideal for all novice growers or those who cannot keep a close [...]

  • 3 seeds 36.00€ 28.80€
  • 10 seeds 99.00€ 79.20€

Frozen Black Cherry Auto - Anesia Seeds

Anesia Seeds presents here Frozen Black Cherry Auto, the fast and productive Autoflowering version of its [...]

  • 3 seeds 30.50€
  • 5 seeds 47.00€
  • 10 seeds 88.00€
  • 25 seeds 176.00€
UP TO 30%

Tropicanna Poison XL Auto - Sweet Seeds

Alchimia is happy to present Tropicanna Poison XL Auto by Sweet Seeds, a new auto-flowering strain belonging to the Red family. It is the auto version of [...]

  • 3+1 seeds 28.00€ 19.60€
  • 5+2 seeds 46.00€ 32.20€
  • 25 seeds 100.00€
Promo

Hardcore Gelato - Philosopher Seeds

Alchimia is happy to present Hardcore Gelato by Philosopher Seeds, a genetics with a distinguished and tropical bouquet, with creamy and sweet Kushy nuances remini [...]

  • 3 seeds 23.00€ 2x1
  • 5 seeds 36.00€ 2x1
  • 10 seeds 65.00€ 2x1
  • 25 seeds 140.00€
UP TO 20%

Critical Kush - Barneys Farm

This marijuana strain developed by the team of Barney's Farm is a strange mix that comes from two famous genetics: the Critical Kush is a crossing between the highly desired [...]

  • 1 Seed 14.00€
  • 3 seeds 36.97€ 29.55€
  • 5 seeds 52.50€ 42.00€
  • 10 seeds 91.00€ 72.80€
Promo

Oreoz S1 - Philosopher Seeds

Alchimia is delighted to present Oreoz S1 by Philosopher Seeds, a cannabis strain renowned in the USA for its high THC content and long-lasting ef [...]

  • 3 seeds 27.00€ 2x1
  • 5 seeds 43.00€ 2x1

B-45 by Booba - Silent Seeds

Now available at Alchimia, feminised seeds of B-45, a collaboration between Silent Seeds and the great Booba, a renowned rapper on the French scen [...]

  • 3 seeds 39.00€
  • 5 seeds 59.00€
  • 10 seeds 109.00€
Promo

Gorilla Zkittlez - Philosopher Seeds

Alchimia is happy to present Gorilla Zkittlez by Philosopher Seeds, a hybrid created from two famous US genetics. This variety will delight beginners for its produ [...]

  • 3 seeds 23.00€ 2x1
  • 5 seeds 36.00€ 2x1
  • 10 seeds 65.00€
  • 25 seeds 140.00€
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