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Black Jack Auto feminized seeds



Black Jack Auto: Heavy Yields in No Time

Black Jack Auto is an autoflowering strain of the third generation, a new version of Sweet Seeds’ Black Jack. This beautiful plant was created by combining a second-generation Sweet Afgani Delicious and Jack Herer. The strain has a considerate amount of Sativa (66,9%), a bit of Indica (30%) and Ruderalis (3,1%), which makes it a fast-flowering and medium-sized variety ideal for indoor and outdoor cultivation.  

Black Jack Auto takes just 9 weeks from germination to flower completely and brings vigorous resin-packed buds with calyxes shaped like grapes. It can reach up to 110cm of height whether cultivated indoors or outdoors. Indoor cultivation seems more convenient as the plants develops a bushy Indica structure with medium lateral brunches. This strain adapts itself at any room temperature and thrives indoors producing up to 550g/m2. The strain can grow in any conditions and is very forgiving. These features make it perfect for inexperienced growers. Outdoors, Black Jack Auto prefers consistent sunlight and the temperature regime of 70-80° F. In the open air, this strain can produce an outstanding amount of yield, up to 250g/ plant.

A Crack-Down on Depression and Anxiety

Black Jack Auto offers you a warm and delicate feeling, taking over the body and mind. In the beginning, it strikes quickly and leaves a sense of heaviness in the head. Then it transforms into an uplifting high that bring relief from anxiety and depression. The released aroma is an unforgettable combination of sweet notes and citrus with earthy undertones.


  • Brand

    AKA seed bank. They create and preserve cannabis genetics, then we get them to you.

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    Sweet Seeds
  • Type of seeds

    Regular or feminized. Pick feminized if you want female plants only.

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  • Type of seeds

    Either autoflowering or photoperiod. Both have their pros and cons, but growing autos is easier.

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  • Suitable for growing

    This strain is perfect for growing both indoors and outdoors.

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    Indoor, Outdoor
  • Effect *

    Each strain produces a certain effect on your body. This is what you can expect from this variety.

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    Creative energy fountain
  • Genetics

    Genetic composition of the strain. Shows parent strains that were used to create this particular variety.

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    S.A.D. Auto x Jack Herer Auto
  • Height

    This is how tall the plant can become. Use this info when planning your grow space.

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    40 - 110 cm
  • Harvest

    This is how much bud you can get from this variety come harvest time.

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    400 - 550 g/m² indoors
    40 - 250 g/plant outdoors
  • Indoor flowering time

    The length of the flowering stage for photoperiod strains, or seed-to-harvest time for autoflowers.

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    42 days
  • From seed to harvest

    Total time required to fully grow a plant, from germination to harvest.

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    63 days
  • % Sativa/ Indica/ Ruderalis

    The ratio of Sativa/Indica/Ruderalis in this particular variety.

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    66,87% Sativa / 30% Indica / 3,12% Ruderalis
  • THC

    The main psychoactive compound in cannabis. The higher THC level, the more potent the strain.

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    19 %
  • CBD

    This compound doesn't get you high but is known to be highly medicinal and calming.

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    1.1 %
  • CBN

    Cannabinoid linked to many medicinal properties.

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    0.3 %

*Herbies sells cannabis seeds exclusively as souvenirs that aren’t meant for cultivation or germination. Customers should be aware that the germination of cannabis seeds is illegal in most countries. Herbies sells cannabis seeds exclusively for collecting and preservation for future generations. We advise customers to check with their local laws before germination, as Herbies does not accept responsibility for the illegal use of our products.

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