High THC Cannabis Seeds

High THC Cannabis Seeds

This section is a collection of the most powerful and potent high THC cannabis seeds available to our team at SeedMasters.com!


We have carefully picked the very strongest strains in terms of high THC content, saving you time and providing you with some ferocious world class genetics that will seriously blow your socks off! We are excited to showcase the indisputable potency of these champion strains and to do our bit to make them more accessible as a whole.

Our High THC cannabis seeds are reserved for those with real tolerance, those who are brave, and those who are just plain irresponsible! This list is NOT for newbies!!!

These strains are perfect for the professional, long-term enthusiasts looking to put some raw horsepower behind their breeding operations, for the established home-growers looking to try something even more rewarding, or just for anyone with courage who is looking to put some hairs on their chest! Whatever your situation, it's safe to say these will not disappoint!

..and as always you can expect nothing less than 
high-quality cannabis seeds when you buy from our team here at SeedMasters.com! 
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Fruit Punch Auto

It’s finally here! After many requests Heavyweight have produced an autoflowering version of the leg..

From £23.95

Fully Loaded Auto

Heavyweight has been busy creating the next generation of auto-flowering cannabis seeds and they hav..

From £23.95

Future #1

Future #1 Is recognized as the most potent strain ever created, with independent laboratories confir..

From £29.45

Future Island

Introducing Future Island, a high-potency hybrid bred from two of our most powerful strains, Future ..

From £29.45

G13 Haze

These cannabis seeds have been created by crossing G13 with our much loved Hawaiian.Creating G13 Haz..

From £9.95

G14

G14 is the most stable strain that is offered by our seed bank. It's the successful outcome of work ..

From £7.95

Galaxy

Hybrid between Afghani and Northern Lights, Galaxy is a variety that surprised us for its great yiel..

From £4.95

GDP Auto x Gumberry Auto

GDP Auto x Gumberry Auto is a heavy-hitting purple colored auto-flowering strain with Indica dominan..

From £8.95

Gelato # 41 Auto

By far the best Gelato auto available right now is the Gelato 41 auto-flower. Derived from the ..

From £26.95

Gelato #45

GELATO #45™ is a perfect example and execution of selective breeding from the Barney’s Farm lab.&nbs..

From £10.45

Gelato 41

If you are going to grow Gelato, then grow the best genetic line available - Gelato 41. This va..

From £26.95

Gelato 41 Fast

Gelato Fast is a photoperiod feminized strain using some of the very finest and most stable Gelato g..

From £26.95

Gelato Dream

Gelato Dream cannabis seeds originate from a process of selective breeding in which an elite cutting..

From £29.45

Ghost Train Haze #1

Ghost Train Haze by Anesia is a Sativa cross between Ghost OG and Neville’s Wreck feminized seeds.&n..

From £29.95

Girl Scout Cookies

Girl Scout Cookies is a very popular Californian strain of marijuana with an ever-increasing reputat..

From £11.45

Girl Scout Cookies

With colossal potency levels of 22% THC and incredible flavors, it´s no wonder Girl Scout Cookies is..

From £8.00