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Black Jack is a new classic cannabis strain, a Black Domina x Jack Herer hybrid with high yields and very marked incense flavor.

A great producer of buds covered in resin.

Seeds per pack

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Type and genetics

To create Black Jack feminized seeds, Sweet Seeds breeders crossed an elite Black Domina clone (La Barraca), with a reversed Jack Herer male.


Being a first generation hybrid, it has a strength that translates into spectacular growth. During the flowering phase it's able to triple in height, and if grown outdoors in direct soil, or with pots over 50 liters and with enough light, it can reach 3 meters in height!

Aroma and Flavor

The spicy flavor of this strain is accompanied by an intense smell of sandalwood, similar to the aroma when you enter a cathedral.


The effect is quite strong and balanced, between physical and mental. It's not recommended for consumers who new to cannabis, as its psychoactivity could be too high.


This monster is able to reach a gram per watt indoors, it's one of the Sweet Seeds' most high-yielding strains, indicated for consumers who want to obtain abundant yields. Outdoors, under the right growing conditions, some plants have produced up to 2 kg.

Flowering in indoor cultivation

The average flowering time is 9 weeks, there is little variation from one plant to another.

Flowering in outdoor crops

In the northern hemisphere it can be harvested at the beginning of October, while in the southern hemisphere growers will be able to harvest from April onwards.

Percentage sativa/indica

50% sativa 50% indica


THC: High


  • 1st Prize III Encuentro Por La Normalización Y El Consumo Responsable, Málaga 2008, Indoor Hidro
  • 2nd Prize X Revolta Verde, Girona 2008, Hashish 3rd
  • Prize V Copa Bitox, Sabadell 2008, Outdoor
  • 1st Prize IV Encuentro Por La Normalización Y El Consumo Responsable, Málaga 2009,
  • Indoor Hydro
  • 2nd Prize Fumaria Cup, Lleida 2009, Indoor 3rd
  • Prize 1st THC Skunk Cup, Donostia 2009, Indoor Hydro
  • 2nd Prize Cata Copa de Cultivadores de Cannabis (CCCC), Argentina 2012, Outdoor
  • 2nd Prize VII Copa del Gremi Growshops Catalunya Profesional, Barcelona Grow La Paz, Lleida 2014, Indoor Hydro

La Huerta's opinion

This cannabis strain is present in most cannabis social clubs in the city of Barcelona.... It must be for a reason!

Data sheet

Types of seeds
Feminized seeds
Indica sativa percentage
50% S-I Hybrid (balanced)
Flowering time
Long Flowering (+65 days)
Potent effect
Citric flavour
Incensed/Haze flavour
Spiced flavour
Sweet/fruity flavour
Wooden flavour
Haze strain
Other characteristics
Award winning prize
Easy to grow
High yield
Ideal for extracts

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