Black Jack Auto plant
Black Jack Auto plant

Black Jack Auto

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Black Jack Auto by Sweet Seeds yields large amounts of quality buds similar to those of Jack Herer.

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Black Jack Auto by Sweet Seeds is one of those strains that let off such a pungent aroma when smoked that it’ll linger in your room for hours. When grown in humid, cooler climates you won’t be able to get the most out of this strain but it can still grow, just shorter and with considerably less yield; make the most of the warmest summer months in order to grow this plant in cooler climates.

Growing Black Jack Auto by Sweet Seeds

Growing Black Jack Auto Indoors

Indoors you should be able to fit 9 of these plants per square meter as long as you bend and train the branches. The trick is in placing a stake along the trunk before it starts flowering and then tie the branches up higher to the trunk, in order to keep the plants slimmer rather than having the branches spread out with the weight of the buds.

Black Jack Auto Outdoor Growing

Outdoors these plants grow tall with thick foliage and long side branches that produce thick, resinous buds – it usually grows around 10 branches that all yield flowers. You can grow it up to 1.5m outdoors, yielding up to 200g per plant after just 70-75 days.

Black Jack Auto Psychoactive Effects

Its effect is energetic and laugh-inducing, perfect for daily smokers. When grown in right you’ll be surprised with its quality.

  • Sativa/Indica: 60/40%
  • Flowering: 65-70 days.
  • Height: 0.6-1m indoors, 1-1.8m outdoors.

Data sheet

Sweet Seeds
Seed type
Available individually
Recommended use
Recommended growing environment
Cannabinoid profile
Physical effect
Psychoactive effect
Indoor Flowering Time
9-10 weeks
Outdoor Harvest Time
60+ days after germination
Flavor 2
Dry/Low humidity

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Black Jack Auto Reviews


Hola María Teresa Molina Carrasco.
De 3 a 7 es un buen periodo lumínico, puedes obtener buenas cosechas de esta variedad con esas horas de luz. Esta claro, que no va a dar el máximo, pero quedarás satisfecha con los resultados, siempre que la alimentes bien y la cuides.
Un saludo


Hola! Vivo en Málaga y tengo plantada una blanca jack auto en maceta de 20litros. Pero no le da el sol todo el día, le da como de 3 a 7 de la tarde. Afectará a su crecimiento y floración?


tiene un aspecto increible

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Black Jack Auto plant

Black Jack Auto