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Chronic strain

Chronic Strain Created by Serious Seeds

F1-hybrid, Sativa/Indica hybrid

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The Chronic strain is our most commercial variety, this medium height, not too dense plant is the perfect combination of very good yield (up to 600 g/m2) and excellent quality. Smokers who appreciate high-quality and grow for themselves choose Chronic weed for its combination of appearance and sweet smell.
Recommended veg.
3 - 4 weeks
Indoor flowering
9 - 10 weeks
Indoor yield
350 - 800 gr/m2
Outdoor harvest
mid/late October
THC level
CBD level
€ 70,00

Strain Description

Frosted heads covered in trichomes with an intense strawberry aroma and a powerful effect, were our breeding goal for this unique strawberry weed. Of medium size with an abundance of buds and an insane amount of trichomes , it smells of fresh strawberries during flowering.

The perfect combination of great yield and excellent quality. 


Chronic comes from a genetic cross between an AK47, a Northern Light, and a cross between a Northern Light and a Skunk. This strong cross is a variety with mainly Indica origins.

Taste and Aroma: 

Smokers who know and cultivate Chronic choose this plant for its combination of appearance and sweet smell (sweet honey aroma).

With serious and rigorous work you will obtain fabulous flavors that will make the difference with "normal" weed.

Its Cultivation:

The genetics of Chronic produce a medium-sized plant, not too dense, this is the perfect combination of good yield and excellent quality, each grower who cultivates this variety correctly stands with his mouth wide open in front of his plants at harvest time, astonished by the enormous size of the cola and the beauty of the Chronic flowers. 

It grows mainly into a single large central bud that delights the eyes and has few side branches.

Chronic does not respond well to topping, it is better to favor a 'one bud' or a selection of the most beautiful side branches. 

The grower must keep a special eye on the drying process to preserve this sweet honey aroma. Simon gives the following recommendations: "Even when alive, the scent of wildflowers is subtle,  it will be lost for good if not dried properly. When put in plastic before being completely dry, the scent has irreversibly disappeared, this even more so for this variety than for all others I have worked with."

Its Effects:

Chronic fundamentally has a strong effect on the physique but also affects the Mind (a bit relaxing or Carefree and also a hint of meditative or creative effect).

Its kinship with AK-47 brings a long-lasting and appreciated high.

In a few numbers:

Flowering period: 53 to 63 days or 8 to 9 weeks 

It is one of the highest yielding varieties (can reach up to 800g/m2!).

In a few words:

Chronic variety is our most commercial variety, this medium height, not too dense plant, is the perfect combination of very good yield and excellent quality. Smokers who appreciate high quality and who grow themselves choose this plant for its combination of appearance and sweet smell. With its Indica genetic background Chronic weed production can reach 600 g/m2 without losing that special connoisseur feeling.

Additional Information:

-Already winner of the 3rd prize at the High Times Cannabis Cup in 1994, Chronic  was improved in 2000. 1st prize at La Bella Flor Cup Spain 2003 (by Ezequiel) and 1st prize at the Highlife Cup Spain 2004 (by Mundo Ganja, Alicante). 2nd prize Highlife Cup Spain 2004, category: Hydroponic (by Perenne Grow, Barcelona. Last reported prizes by Chronic: 3rd prize Copa Green Skull 2016, category: Solventless Extracts, Cabezon de la Sal, Spain and 3rd prize Cata Invernal 2016, category: Drysief, Spain.

A bit of history:

Every cannabis seed breeder strives to create the optimal combination of quality, quantity, and potency. A variety that produces heavy flower tops with a delicious smell and tasty aroma that practically drip THC from large amounts of resinous glands. Well, Serious Seeds, for example, is certainly a seed bank that has succeeded in achieving this goal, having selected the famous Chronic variety. With its introduction in 1994, it set a new standard in terms of combining superior yield, flavor, and potency excellence in a single plant. If growing and harvesting were an active part of the screening ceremony of the High Times Cannabis Cup, Chronic would surely have won more than the 3rd place in the hydroelectric category in 1994, when it had been entered in the Cup for the first and only time. Because the buds are not only huge but also almost leafless, beautifully composed of abundant small single flower clusters that add up to big brick-sized colas or even larger.

The pedigree of Chronic is very classic, composed of Northern Lights/Skunk x Northern Lights/AK-47. This is the formula of today's Chronic. The original, which existed in the 90s, did not contain AK. But in the late 90s, Simon, the breeder of Serious Seeds, thought his Chronic was somehow "dated", as he says, and that it needed to be refreshed and made more complex by breeding in a slight degree of new superior genetics. He opted for his proven AK-47. It was of utmost importance to lose none of those wonderful characteristics that had made the variety so popular among growers worldwide. Simon reports: "I bred more sativa into the indica-dominant chronic, which gave it a more complex and full high spectrum without losing the good yield and flavor. The facelift also improved both resistance and resin content. The slightly sweet scent with a bit of piquancy also remained intact."

Strain Reviews

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4.40 / 5 out of 5 ratings

5 Reviews

Marcin J.Verified buyer
Best company

Best company

Michael L.Verified buyer

Love this old school strain!! Great producer awesome flavor.
Imo makes the best diamonds ever!!

Yannick T.Verified buyer
Pousse très bien La qualité

Pousse très bien
La qualité est au rendez-vous

JAMVerified buyer
Great site

Wish you had, break down like 80:20 I/S, and THC ranges like, testing 20-25% THC but love your site.

Wolfgang B.Verified buyer

Hey,the last order for chronic where god plans,but not chronic. Ather seeds