Black Jack – Nirvana Seeds (Feminised)


A fast-flowering, citrus-driven hybrid delivering sharp mental focus and energising, uplifting effects.


Introduction:

Black Jack by Nirvana Seeds is a vigorous and flavour-packed hybrid that blends the best traits of Black Domina and Jock Horror. Known for its bold aroma, potent effects, and quick flowering time, this sativa-leaning strain is ideal for those who want a stimulating, energising high without the heaviness of a full indica. With its manageable height and impressive resilience, Black Jack is well suited to discreet indoor setups and shorter outdoor seasons.


Strain Information:

Strain Name: Black Jack

Breeder: Nirvana Seeds

Lineage: Black Domina x Jock Horror

Genetics: Mostly Sativa

Seed Type: Feminised

Flowering Type: Photoperiod

Flowering Time: 8–9 weeks

Effect: Focused, uplifting, motivating, mentally stimulating

Aroma: Earthy, citrusy, lemon zest with spicy undertones

Taste: Pungent, dank, citrus with a sharp and zesty finish

Height: Medium, compact and discreet

Yield: 400–500 g/m² indoors

THC Content: 16–20%

CBD Content: Up to 1%


Strain Description:

Black Jack is a dynamic F1 hybrid created by crossing the sedative Black Domina with the energetic Jock Horror. The result is a well-balanced plant that delivers on both yield and effect. With THC levels ranging from 16–20% and CBD content up to 1%, Black Jack produces large, resin-coated buds within a short flowering window of 8–9 weeks. The effects are immediate and cerebral, making it suitable for productivity, social settings, or creative focus. It is particularly appealing to those seeking mental stimulation without pronounced couch-lock.


Growing Information:

This hybrid performs strongly in indoor environments and compact outdoor spaces due to its medium height and limited stretch. It features tight internodal spacing and a bushy structure, responding well to topping and other training techniques. Black Jack demonstrates solid resistance to environmental stress, including cooler temperatures and elevated humidity, making it adaptable to varied climates. Its discreet profile and efficient flowering time make it a practical choice for growers seeking reliable and manageable cultivation.


Flavour and Aromas:

Black Jack stands out for its complex and assertive aroma profile. Notes of dank earthiness blend with sharp citrus, lemon peel, and warm spice during flowering. When consumed, the flavour delivers a rich combination of citrus brightness and deep funk, followed by a lingering zesty finish. The overall experience is bold and layered, appealing to those who appreciate strong, distinctive flavours.


Strain Lineage:

Black Jack inherits resin production and compact structure from Black Domina, a renowned indica known for durability and potency. From Jock Horror, it gains its sativa-driven energy and mentally uplifting qualities. The combination results in a versatile hybrid that balances strength, flavour, and manageable growth characteristics.


Effects:

The high begins with a rapid cerebral uplift that enhances focus and motivation. Mental clarity and energy dominate the early phase, encouraging productivity and engagement. As the experience progresses, a mild physical relaxation provides balance without heavy sedation, maintaining functionality throughout the duration.


Strain Summary:

Black Jack by Nirvana Seeds is a fast-finishing, flavour-rich hybrid offering energising effects and dependable yields. With its citrus-forward aroma, compact structure, and stimulating high, it is well suited to daytime use and growers seeking efficiency without sacrificing quality. Combining classic genetics with modern performance, Black Jack remains a strong contender for those prioritising flavour, focus, and reliable cultivation results.


Disclaimer:
All seeds sold at Breeders Collective are strictly intended as souvenirs and for preservation purposes. We do not condone or encourage illegal activity. Please ensure you understand and comply with your local laws regarding cannabis seeds and cultivation.