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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Critical Daddy Purple

It maintains the fruity flavors of the Critical, adding flavor, resin and production and also the pu..

From £23.50

Critical Jack

Critical Jack is a top-quality feminised cross between the legendary Jack Herer and Critical +; one..

From £7.50

Critical Jack Auto

Critical Jack Autoflowering cannabis seeds by Dinafem Seeds belong to a feminized Indica-dominant ca..

From £7.50

Critical Kush

The Amazing Cup winning cross of Critical Mass X OG Kush cannabis seeds - a mighty Indica legend fir..

From £9.95

Critical Kush

In the world of cannabis growing, hybrids that bring out the best qualities of two different strains..

From £7.00

Critical Kush

Critical Kush cannabis seeds by Dinafem Seeds belong to an Indica-dominant, feminized cannabis strai..

From £6.50

Critical Kush Auto

One of Barney’s most prominent strains is now available in auto flowering, so say howdy to Barney's ..

From £8.95

Critical Soma

Critical Soma is an incredible combination of power, productivity, and speed. It is a powerful hybri..

From £24.25

Critical x Blueberry

Critical x Blueberry Feminised Seeds. Now available in bulk quantities!..

From £145.00

Critical XXL

Critical XXL will impress cannabis connoisseurs and enthusiasts because you are guaranteed solid top..

From £8.95

Critical XXL Auto

We have now finally developed one of our very own super fast Autoflowering strains. 100% Indica dens..

From £8.95

Critical+

Critical+ Feminised is a new generation and is more productive and faster than earlier ones, therefo..

From £22.45

Crystal METH

We have created a potent Mexican variety that produces a tropical Sativa high. This variety has a gr..

From £7.95

Dankberry

Dankberry is our newest premium strain with the unmistakable strength and uniqueness of Anesia Seeds..

From £29.95

Deep Cheese

Deep Cheese cannabis seeds by Dinafem Seeds belong to a Sativa/Indica, feminized cannabis strain tha..

From £6.50

Deep Jealousy Auto

Deep Jealousy Auto complements the Anesia selection of above-average potent and aromatic autofloweri..

From £22.95