Seeds
Black Jack Feminised Seeds - 5
SKU: NV-BJ
BlackJack is thought of highly in the medical marijuana seeds scene.
Total
1
- In stock
- Orders sent from the US
- Tracked discreet delivery
1/5
.8e091a2b.svg)
Flowering Type
Photoperiod
Parental lines
Black Domina x Jock Horror
THC content
High THC (16-24%)
CBD content
High CBD (Over 5%)
Photoperiod flowering time
9 to 11 weeks
Yield indoor
High Yield (450-600gr/m2)
Plant size
Medium
Suitable climates
Dry, Hot, Warm
From the breeder
BlackJack is thought of highly in the medical marijuana seeds scene.
Nirvana Seeds breeder notesAroma
Piney
Parental lines
Black DominaJock Horror
BlackJack is thought of highly in the medical marijuana seeds scene.
BlackJack's mother, Black Domino, was a clone of a marijuana plant sent to the Netherlands from the area around Seattle. Its father is Nirvana's very own Jock Horror. Nirvana BlackJack produces hard buds with huge, grape-like calyxes that are completely encrusted with THC! The smoke is heavy and flavoursome, and produces an exceptionally long-lasting high. BlackJack is thought of highly in the medical marijuana seeds scene.
Brand/breeder
Parental lines
Black Domina x Jock Horror
Variety
Indica / Sativa hybrid
Flowering type
Photoperiod
Sex
Feminised
THC content
High THC (16-24%)
CBD content
High CBD (Over 5%)
Yield outdoor
High Yield (450-750gr/plant)
Yield indoor
High Yield (450-600gr/m2)
Plant size
Medium
Photoperiod flowering time
9 to 11 weeks
Northern hemisphere harvest
October
Suitable climates
Dry, Hot, Warm
Aroma
Piney
SKU
NV-BJ
Photoperiod outdoor timeline
Photoperiod strains rely on seasonal daylight changes, so harvest timing is closely tied to your local climate.
Stage 1
Germination / Early Start
March – April
Wait for: frost risk easing, stronger spring light
Watch for: cold snaps, slow starts, excess moisture
Stage 2
Seedling / Transplant
April – May
Wait for: milder nights and settled weather
Watch for: transplant shock, wind exposure, pests
Stage 3
Vegetative Growth
June – July
Wait for: long days, regular feeding, healthy expansion
Watch for: overcrowding, nutrient issues, insect damage
Stage 4
Flowering
August – September
Wait for: shortening days, dry airflow, branch support
Watch for: mould, botrytis, high humidity, bad weather
Stage 5
Harvest
Late September – October
Wait for: ripe trichomes, dense finished flowers
Watch for: autumn rain, rot, early frosts
Indoor photoperiod timeline
Photoperiod strains give indoor growers more control over size, shape, and when flowering begins.
Week 0
Germination
Strong early establishment
Wait for: strong early establishment
Watch for: inconsistent starts, excess moisture
Week 1–2
Seedling
Stable structure and healthy growth
Wait for: stable structure and healthy growth
Watch for: stretch, early stress
Week 3–6+
Vegetative Growth
Desired plant size and canopy shape
Wait for: desired plant size and canopy shape
Watch for: overcrowding, uneven growth, training stress
7–12+ weeks
Flowering Phase
Strong flower formation and steady development
Wait for: strong flower formation and steady development
Watch for: humidity, airflow, support issues
Harvest
Harvest Window
Finished flowers and mature trichomes
Wait for: finished flowers and mature trichomes
Watch for: cutting too early or pushing too long
Based on 11 reviews
Black Jack Feminised Seeds - 5
Easy purchase, great plant.
Was this review helpful?
Black Jack Feminised Seeds - 5
If you go to Nirvana's page on BlackJack, you'll see that it has very low CBD content. More erroneous information on Seedsman passed on to potential medical users who are depending on accuracy of information.
Was this review helpful?
Black Jack Feminised Seeds - 5
Masses of big sticky buds, which, when harvested, dried and cured made us very happy bunnies . Eased my pain and made me laugh. Highly recommended
Was this review helpful?
Black Jack Feminised Seeds - 5
The Black Jack strain grows very densely with a strong bag appeal. It is a shorter plant with no stretch in flower, so veg it to within a foot of the height you want it to get to at full maturity.
Was this review helpful?
Black Jack Feminised Seeds - 5
This plant is very interesting .Very fast.amazong plant Great Strain, Big Buds.Fantastic! easy to grow and what an amazing plan
Was this review helpful?
Black Jack Feminised Seeds - 5
I am SO glad I got this strain. I combined this with master kush from nirvana and while they are both amazing. The blackjack blows it away with its effects. Simply fantastic. Took about 11 weeks and grew very nicely. I am planning my next grow around this strain. That's how good it is.
Was this review helpful?
Black Jack Feminised Seeds - 5
Great Strain, Big Buds.Fantastic! easy to grow and what an amazing plant. Im buying it again today. Thanks
Was this review helpful?
Black Jack Feminised Seeds - 5
BlackJack is a great hybrid - leaning towards the Sativa side. We only germed 2 of the 5 seeds and took clones - easy to clone and pretty hardy plants. Recomend
Was this review helpful?
Black Jack Feminised Seeds - 5
Black Jack is one of those strains that you can use any time. It can get you uplifted, and it can help you sleep. It provides both a cerebral head high as well as the body relaxation of an indica. I pulled the plants at 9 weeks - I never went 11 weeks on this strain.
Was this review helpful?
Black Jack Feminised Seeds - 5
THIS TAKES MORE ATTENTION TO GROWING,GREAT STRAIN BUT PAY ATTENTION TO GROW FUNDAMENTALS,NOT RECOMMEND FOR BEGINNERS OR OUT DOORS IN CERTAIN CLIMATES,BUT WORTH THE EXTRA ATTENTION.
Was this review helpful?
Black Jack Feminised Seeds - 5
Good Yield sweet smelling easy to grow very strong it will knock you out!!! The only complaint is that it takes a little long to mature but if you have patience. .....
Was this review helpful?
New content loaded
