Black Jack Auto – Nirvana Seeds (Autoflowering Feminised)


A fast-finishing sativa-leaning autoflower delivering bold citrus flavour and energising, focused effects.


Introduction:

Black Jack Auto by Nirvana Seeds is a rapid, resilient autoflowering hybrid that blends the clarity of sativa influence with the stability of indica genetics in a compact, discreet format. By crossing the original Black Jack with Ruderalis, Nirvana created a potent and flavour-rich cultivar that provides focused, uplifting effects while completing its lifecycle in just 8–9 weeks from seed. It is well suited to growers seeking speed, discretion, and stimulating daytime performance.


Strain Information:

Strain Name: Black Jack Auto

Breeder: Nirvana Seeds

Lineage: Black Jack (Black Domina x Jock Horror) x Ruderalis

Genetics: Mostly Sativa

Seed Type: Autoflowering Feminised

Flowering Type: Autoflowering

Flowering Time: 8–9 weeks from seed

Effect: Focused, motivated, energising, uplifting

Aroma: Pungent, earthy with citrus, spice, and lemon

Taste: Dank and bold citrus with a spicy kick

Height: Medium, low-profile structure

Yield: Medium–high (varies by setup and environment)

THC Content: 16–20%

CBD Content: Up to 1%


Strain Description:

Black Jack Auto preserves the stimulating and clear-headed high of its photoperiod parent while adding the convenience of autoflowering genetics. With THC levels reaching 16–20% and CBD content up to 1%, this sativa-dominant hybrid develops large, resin-coated buds within a short 8–9 week cycle. The effect is mentally uplifting and well suited to daytime use, supporting productivity and creative focus. It offers noticeable mental clarity without the heavy sedation often associated with indica-dominant varieties.


Growing Information:

This strain adapts well to both indoor and outdoor environments, particularly where discreet cultivation is required. Its medium height and limited stretch make it manageable in smaller spaces, while its sturdy, bushy structure reflects its Black Domina heritage. Black Jack Auto handles cooler and damp climates effectively, making it suitable for regions with shorter summers. With strong resistance to environmental stress and a rapid lifecycle, it provides an efficient option for growers seeking consistent results with minimal intervention.


Flavour and Aromas:

Black Jack Auto features a pronounced aroma combining pungent earthiness with sharp citrus and warm spice. During flowering, zesty lemon notes and herbal undertones become prominent. When consumed, the flavour is dense and bold, layering citrus brightness over a dank base with a lingering spicy finish. The overall profile is rich and assertive, appealing to those who appreciate strong, characterful flavours.


Strain Lineage:

Black Jack Auto is created by crossing the original Black Jack—derived from Black Domina and Jock Horror—with Ruderalis genetics. Black Domina contributes resin production and structural reliability, while Jock Horror adds energetic and mentally engaging effects. The introduction of Ruderalis enables automatic flowering while maintaining the potency and flavour of the original hybrid.


Effects:

The experience begins with a clear cerebral lift that enhances focus and motivation. Energy levels rise without becoming overwhelming, making it suitable for daytime tasks and social settings. As the high progresses, a subtle physical relaxation balances the mental stimulation, maintaining functionality throughout the duration.


Strain Summary:

Black Jack Auto by Nirvana Seeds is a dependable autoflowering hybrid offering fast turnaround, bold citrus character, and energising effects. Its compact growth, environmental resilience, and efficient lifecycle make it suitable for a wide range of cultivation setups. Delivering focused clarity and strong flavour in a discreet format, Black Jack Auto stands out as a practical and rewarding option for growers seeking speed and stimulation.


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.