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The feminized cannabis strain Black Jack F1 Fast Version by Sweet Seeds is the light-dependent fast flowering version of the famous Black Jack strain. It is a strain with a sweet incensey taste with citrus touches and a balanced indica-sativa effect.

Seeds per pack

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Type and genetics

The Black Jack F1 Fast version feminized cannabis seeds by Sweet Seeds are the result of the crossing of S.A.D. Auto and a elite clone of Jack Herer. The result is a light-dependent cannabis plant with similar characteristics to Black Jack but with the advantage of having a faster flowering stage.


This balanced strain grows with great hybrid vigor, producing long and robust side branches that during the flowering stage end up full of very aromatic buds.

Aroma and taste

Black Jack Fast Version is a strain capable of producing an intensely sweet and incensed aroma with hints of citrus and an interesting earthy background.


The effect produced by this strain is balanced, pulling more towards the sativa side, being psychoactive and mentally stimulating to finish with a more relaxing sensation; ideal to share in social gatherings.


Black Jack Fast Version is able to produce with a large amount of fat and resinous buds thanks to its large number of side branches. In crops of indoor you can harvest up to 500 - 600g perm2 while outdoors it can reach up to 500 - 700g per plant .

Flowering indoors

Indoors this strain will be ready to harvest after 7-8 weeks of flowering, after the corresponding growth phase.

Flowering outdoors

Outdoors this strain can be harvested at mid-September in the Northern Hemisphere and mid-March in the Southern Hemisphere.

Percentage sativa/indica

50% sativa / 50% indica


THC: 16 - 21%.

CBD: 1,1%.

La Huerta's opinion

Black Jack F1 Fast Version by Sweet Seeds is a cannabis strain easy to grow, fast flowering and photodependent. It is ideal for those looking for fast but high quality results.

Data sheet

Types of seeds
Feminized seeds
Flowering time
Average Flowering (55-65 days)
Strong effect
Citric flavour
Incensed/Haze flavour
Sweet/fruity flavour
Haze strain
Other characteristics
Easy to grow
Ideal for extracts

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