Home
High THC Strains

High THC Strains

WHEN POTENCY MATTERS MOST, GO FOR SEEDS THAT START AT 20% THC!

If pure power is what you're going for, Feminized Seeds has you covered. Using advanced breeding techniques, our latest strains exceed 20% THC on average. Some, like Crystal Gelato, actually pushed past the 25% mark during testing. That's mind-blowing!

These Feminized Seeds Are Stronger Than Many Extracts - Check'em Out! !

Maximum Potency
Incredible Flavours
Rich & Full-Bodied
Tolerance Busting
In High Demand

Pineapple Chunk

Advanced Female Seeds
- Sweet, Pineapple Flavours
- 15 - 20% THC
- Hybrid Genes and Effects
- 6 - 9 Week Flowering
This exceptionally succulent bud comes with all the tropical flavours of a ripe and ready pineapple! With great yields,
This exceptionally succulent bud comes with all the tropical flavours of a ripe and ready pineapple! With great yields, a versatile flowering time and wonderful, varied effects, there's not much to say against it. Considering that, what are you
Ice Breaker

Advanced Female Seeds
- Huge Yields: >500gr/m2
- 8 - 9 Week Flowering
- Kush Flavours
- 15 - 20% THC
This strain offers yields of over 500gr/m2 in 8 - 9 weeks of flowering. This makes Ice Breaker the most productive strai
This strain offers yields of over 500gr/m2 in 8 - 9 weeks of flowering. This makes Ice Breaker the most productive strain in the Advanced Female Seeds collection, and a worthy addition to your grow. With hybrid genetics and comfortable levels of THC,
Blueberry

Dutch Passion
- Original Blueberry F1
- 20% THC
- 80% Indica | 20% Sativa
- Famous Blueberry Flavours
This is the original genotype for the Blueberry strain which has come to define fruity cannabis. If you want a bit of ca
This is the original genotype for the Blueberry strain which has come to define fruity cannabis. If you want a bit of cannabis history (and a great strain in its own right), Blueberry cannabis seeds are a must have!
White Widow

Dutch Passion
- Original 80's F1 Genetics
- Truly Old School Flavours
- Stupid Trichome Production
- 8 - 9 Weeks Flowering
This White Widow F1 stays as close to the White Widow genetics of the 80's as it's possible to get. Potent, re
This White Widow F1 stays as close to the White Widow genetics of the 80's as it's possible to get. Potent, resinous and containing the DNA that helped define the modern conception of cannabis, you have to try this seed.
The Ultimate

Dutch Passion
- Massive Yields: 750gr/m2
- Sativa Dominant
- Very High THC
- Small Height: 75cm
With yields pushing 750gr/m2, The Ultimate is one of the highest yielding cannabis strains on the market. Sativa dominan
With yields pushing 750gr/m2, The Ultimate is one of the highest yielding cannabis strains on the market. Sativa dominant genetics make for a potent, uplifting high as well. There's no reason not to try this plant!
Sour Surge

Penthouse Seeds
- 23% THC
- US Genetics
- Fizzing Flavours
- Fast Flowering
By bringing together Fruity Pebbles and Zkittlez, Penthouse Seeds Co brought Sour Surge to life. And what a momentous bi
By bringing together Fruity Pebbles and Zkittlez, Penthouse Seeds Co brought Sour Surge to life. And what a momentous birth this was. Delcious, powerful and fast, it's got it all.
Girl Scout Cookies

Feminised Seeds
- 26% THC Conent
- 600gr/m2 Yields
- Famous GSC Flavours
- Fast Flowering Times
A world famous strain in a new iteration, Feminised Seeds Girl Scout Cookies is packed with THC and great flavours. High
A world famous strain in a new iteration, Feminised Seeds Girl Scout Cookies is packed with THC and great flavours. High yielding, fast growing and just amazing, what are you waiting for?
British Outdoor Mix

Feminised Seeds
- Random Mix Of Seeds
- All Tough And Resilient
- All Photoperiod
- Great Results From All
A lucky dip of hardy cannabis seeds, what sounds better? You won't know what you've got til it comes to harves
A lucky dip of hardy cannabis seeds, what sounds better? You won't know what you've got til it comes to harvest tiem, but we promise that everything in these packs is specifically chosen to thrive in the arduous British climate.
Dos Si Dos

Feminised Seeds
- Up to 28% THC
- Huge Yields
- Mint, Lime and Cookies Flavours
- GSC Genetics
Dos Si Dos is world famous for being amazing, and here's one of the best iterations available. If you like complex
Dos Si Dos is world famous for being amazing, and here's one of the best iterations available. If you like complex flavours and complex highs, look no further than feminised seeds Dos Si Dos.