Seeds
Black Jack Auto Feminised Seeds - 5
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SKU: NV-BJ-AUTO
Easy to grow , sativa-dominant auto with a euphoric high.
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Flowering Type
Autoflowering
Parental lines
Black Jack (Black Domina x Jock Horror) x Ruderalis
THC content
Medium THC (10-15%)
CBD content
Medium CBD (1-5%)
Autoflowering seed to harvest time
8 to 10 weeks
Yield indoor
Average Yield (350-450gr/m2)
Plant size
Medium
Suitable climates
Cool, Dry, Hot, Temperate, Warm, Wet
From the breeder
Easy to grow , sativa-dominant auto with a euphoric high.
Nirvana Seeds breeder notesAroma
Piney
Parental lines
Black Jack (Black DominaJock Horror)Ruderalis
Easy to grow , sativa-dominant auto with a euphoric high.
Black Jack Auto is a sativa-dominant strain that has had ruderalis genetics added to the photoperiod Black Jack (Black Domina x Jock Horror) strain. It is a medium-sized plant that is a lot easier to cultivate than the photoperiod plant.
Grown indoors, Black Jack Auto will produce yields of between 350 - 450 gr/m2 in an 8 - 10 flowering period with flowering beginning at the end of the third week of growth. Cultivation outdoors is also suitable.
The predominant flavour is that of pine. THC content is described as being medium, meaning about 15% or just over. CBD is rated in excess of 1%. The effect is described as euphoric making Black Jack Auto an uplifting strain.
Brand/breeder
Parental lines
Black Jack (Black Domina x Jock Horror) x Ruderalis
Variety
Indica / Sativa hybrid
Flowering type
Autoflowering
Sex
Feminised
THC content
Medium THC (10-15%)
CBD content
Medium CBD (1-5%)
Yield indoor
Average Yield (350-450gr/m2)
Plant size
Medium
Autoflowering seed to harvest time
8 to 10 weeks
Suitable climates
Cool, Dry, Hot, Temperate, Warm, Wet
Aroma
Piney
SKU
NV-BJ-AUTO
Autoflowering outdoor timeline
Autos can be sown in multiple waves through the season for staggered harvests.
Stage 1
Germination
April – July
Wait for: warmer days, no frost, stable temperatures
Watch for: cold nights, overwatering, weak early light
Stage 2
Seedling / Transplant
1–2 weeks after sprouting
Wait for: strong light, mild weather, protected start
Watch for: slug damage, stretching, transplant stress
Stage 3
Vegetative Growth
Weeks 2–5
Wait for: long bright days, healthy root growth
Watch for: stunting, nutrient burn, pest pressure
Stage 4
Flowering
Weeks 5–8+ depending on cultivar
Wait for: steady sunshine, decent airflow, dry spells
Watch for: mould, heavy rain, snapped branches
Stage 5
Harvest
Weeks 8+ or summer to early autumn
Wait for: mature trichomes, swollen buds, finished aroma
Watch for: bad weather, bud rot, harvesting too early
Indoor autoflowering timeline
Autoflowers follow their own internal clock, making indoor timelines easier to plan from seed to harvest.
Week 0
Germination
Healthy seedling emergence
Wait for: healthy seedling emergence
Watch for: overwatering, weak starts
Week 1–2
Seedling
Steady early growth
Wait for: steady early growth
Watch for: stretching, stress, excess moisture
Week 2–5
Early Growth
Strong leaf and root development
Wait for: strong leaf and root development
Watch for: stunting, overcrowding, early stress
Week 5–9+
Flowering
Bud development and visible maturity
Wait for: bud development and visible maturity
Watch for: humidity issues, poor airflow, plant stress
Week 8–12+
Harvest Window
Finished flowers and mature trichomes
Wait for: finished flowers and mature trichomes
Watch for: harvesting too early
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