Serious Seeds carry the three Xs of Amsterdam's flag in their logo, and they supply that city's coffeeshops with the same genetics you see on this shelf. It's a small catalogue with a big trophy cabinet: AK-47 alone has taken 16 competition prizes, and White Russian picked up the 1996 Overall and 1997 Best Bio Grass Cannabis Cups. Below you'll find the classics like Kali Mist, Warlock and Bubble Gum next to the newer packs such as Strawberry AKeil, Serious Happiness and CBD-Chronic.
Double Dutch is a cross of a Warlock male with a pre-2000 Chronic female.
Kali Mist is a superior Sativa from Serious Seeds. Cannabis Cup Winner.
Motavation is a great indica, ideal for SOG and ScrOG systems. Winner of several awards.
Warlock is a strong and potent cannabis strain from Serious Seeds with a long-lasting and brain activating high.
White Russian won the Cannabis Cup in 1996 and is still one of the most effective strains available today.
Bred by some of Holland’s longest established breeders, Serious Happiness is a new, limited edition, F1 hybrid strain from Serious Seeds that takes quality genetics to the next level. Created from combining the legendary strains Warlock and AK-47, Serious Happiness boasts easy cultivation and a 60 – 70 day flowering...
CBD-Chronic is the first dedicated CBD strain to be produced by the breeders of Serious Seeds. By combining Chronic x Remedy, they have created a strain offering a functional and pleasant experience. CBD-Chronic has a CBD:THC ratio of 1:1, flowers in 56-63 days, and can yield up to 600g/m². Any fan of Serious Seeds looking for a bit of extra CBD will not want to pass up CBD-Chronic!
Strawberry AKeil is a sweet, fruity hybrid with sativa-dominant properties. This uplifting creation from Serious Seeds delivers a strong energising high that gradually tapers into a relaxing, mellow stone. The delicious flavours of strawberry, candy, and bubble gum make this a must for sweet-tooths. It is also highly recommended for those looking to relax with a soothing experience.
From the team at Little Chief Collabs comes Killer Glue, a combination of two classic strains that each bring many special traits to the table. This strain is hugely flavourful and aromatic, with bursts of sweet floral notes that demand your attention. Couple this with an unforgettable and profoundly relaxing...
This easy to grow plant is the most popular strain of Serious Seeds. It is of medium height and produces good yields quite quickly. Available as Regular as well as Feminized seeds.
Bubble Gum is a medium tall, usually not too branchy (sometimes stretchy) plant, producing compact, crystal covered buds with an incredible sweet smell.
Autoflowering White Russian (feminized) by Serious Seeds is a brand new crossing of the famous AK-47 and the award winning White Widow. This new gem is yet unpolished and not 100% stable, but you can expect plants of 70-90cm height and the end product will surprise you.
Serious Seeds took a classic OG Kush and paired it with a White Russian to bring us a new and improved Kush that can absolutely deliver. With massive yields, an excellent aroma and out-of-this world potency, Serious Kush could easily become a favourite among Indica lovers.
Type "serious seeds cbd oil" into a search bar and you'll end up looking at bottles. That's not what this breeder makes. Serious Seeds breed CBD-rich seed, and the pack you want is CBD-Chronic, bred together with CBD Crew and lab-tested at a 1:1 ratio. Ten samples went off to the lab and every single one came back 1:1, averaging 5.8% CBD and 5.4% THC. Flowering runs 56 to 63 days indoors with 350 to 600 g/m2, the flavour is earthy with a sweet edge, and the rest of the cannabis seeds range sits one click away if you want to compare.
Serious Seeds keep the strain list short on purpose. Every pack here has been worked for years rather than rushed out, which is why the same names keep turning up in coffeeshop menus and in cup results. Kali Mist, Warlock and Bubble Gum are the old guard. Motavation is the compact indica of the group, staying short with a bit of stretch in bloom, which makes it the one we'd point SOG and ScrOG growers at.
AK-47 is the sativa-leaning classic with 16 competition prizes behind it, including second best Sativa at the 1999 High Times Cannabis Cup, first at Highlife in Barcelona and first at the 2010 Treating Yourself Expo in Toronto. It comes as regular or feminized, grows fast, and packs dense crystal-covered nugs. Watch out for the smell: growers have been warning each other about AK-47 in flower for decades, so if your space has no carbon filter, pick something quieter. Its genes run through Strawberry AKeil (AK-47 x Bubble Gum, and the plant really does reek of strawberry sweets) and Serious Happiness (Warlock x AK-47, 60 to 70 days, 400 to 500 g/m2).
White Russian is AK-47 crossed with White Widow, documented at 22% THC, and it took both the 1996 Overall and 1997 Best Bio Grass Cannabis Cups. The Autoflowering White Russian version needs 11 to 12 weeks from seed and finishes around 70 to 75 days at 70 to 90 cm. Honest bit: the auto plants aren't uniform yet and give 10 to 20 g each, while the photoperiod version goes up to 500 g/m2. Unless height or timing forces your hand, we'd take the photoperiod pack.
Double Dutch is Warlock x the pre-millennium Chronic, with three awards including first place at the ICMag Grower's Cup. It has a honey-sweet scent that carries far less than Warlock's, and the buds get heavy enough that staking is worth doing before they flop.
Killer Glue sits on this shelf, but it isn't a Serious Seeds strain. It's a LITTLE CHIEF COLLABS pack, AK-47 crossed with Original Glue, so treat it as a collab rather than part of the Serious line-up. Everything else here, Serious Kush included, is house genetics. Keep your packs cool, dark and dry until you germinate, and if you're buying one pack to judge the breeder by, make it AK-47 for indoors or Double Dutch if you're growing outside.
No, they breed seed rather than extracts. The CBD-rich pack is CBD-Chronic, bred with CBD Crew and lab-tested at a 1:1 ratio averaging 5.8% CBD and 5.4% THC. If you're after a finished CBD product instead, that's a separate part of our shop entirely.
AK-47, by a distance. It has taken 16 competition prizes, including second best Sativa at the 1999 High Times Cannabis Cup, first at Highlife in Barcelona and first at the 2010 Treating Yourself Expo in Toronto. White Russian holds two Cannabis Cups of its own, the 1996 Overall and the 1997 Best Bio Grass.
Simon is the name growers link with the brand, but we stick to what's documented on the packs rather than retelling breeder biographies. What we can point to is the logo carrying the three Xs of Amsterdam's flag, the coffeeshops in that city running these genetics, and a cup record that includes AK-47's 16 prizes.
The recurring feedback on AK-47 is the same two things: easy, fast growth with a dependable yield, and a smell in flower that will find its way out of your grow space. Double Dutch gets flagged for buds heavy enough to need staking, and the Autoflowering White Russian is still described as uneven plant to plant.
Yes. We ship the full Serious Seeds shelf across the UK in plain, discreet packaging, and orders go out fast. Seeds arrive in their original breeder packs, so keep them cool, dark and dry until you're ready to germinate.