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Blackjack
€27.00
€30.00
10%
4.80/5
(5 Ratings)
Blackjack by Nirvana Seeds is one of the best strains in Nirvana’s seed catalogue. This strain comes from a combination of the legendary Black Domina and a sativa-dominant Jock Horror. This plant shines during the flowering period due to its enormous amount of resin.
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Data sheet
Bank
Nirvana
Seed type
Feminized
Available individually
No
Recommended use
Medicinal
Recommended growing environment
Any
Cannabinoid profile
THC-dominant
Genotype
Sativa-dominant
Physical effect
Medium
Psychoactive effect
Relaxing
Indoor Flowering Time
9-10 weeks
Outdoor Harvest Time
October
Flavor
Citrus
Flavor 2
Earthy
Climate
Cold
Description
Blackjack by Nirvana Seeds is a plant that has a decent indica/sativa balance, a cross between two legends; Black Domina and a sativa-dominant Jock Horror – this plant truly is magnificent. It yields quite a lot of resin, so at the end of the grow you should definitely make the most of the resin such as BHO or with an Ice-O-Lator Original.
Blackjack Cannabis | Best Hash extracts
Growing Blackjack Indoors
Indoors these plants do pretty well when grown using a SoG system – a good technique is to place 16 plants per light, letting them grow for about 20 days before flipping them to the flowering period. About 10 days later you should prune the lower branches, as the flowers grow mainly on the central stem. It’ll need around 9-11 flowering weeks until the flowers are ready to harvest.
Growing Blackjack Outdoors
Outdoors these plants can grow to be quite large, with a vigorous growth period – if you don’t want it to grow too big you’ll need to plant it around the halfway summer mark. It does as good as it possible can if you plant it straight into the ground. It takes until mid-October to fully mature, but the wait is well worth, as Blackjack produces some top-quality, high grade bud.
Blackjack Aroma and Effect
This plant is a combination of citric hints with earthy aftertastes. It gives quite a balanced effect, with a mental high accompanied by a sensation of bodily relaxation. Medicinal patients recommend this strain for fighting stress, depression and anxiety attacks.
- Sativa/Indica: 60/40%
- Flowering: 9-11 weeks indoors, end of October outdoors.
- Height: 0.8-1.2m indoors, 2-3m outdoors.
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11/10/2025
I had been looking for a solution for my small grow tent for a while and this was quite a discovery. The yield is great for the space available and the resin quality is excellent. Awesome!
Translated from Spanish
Llevaba tiempo buscando una solución para mi armario de cultivo pequeño y esto ha sido un descubrimiento. La producción es genial para el espacio disponible y la calidad de la resina es excelente. ¡Una pasada!
02/10/2025
Very good product. It's easy to use and the results are obvious. Excellent.
Translated from Spanish
Muy buen producto. Es fácil de usar y los resultados son evidentes. Excelente.
23/09/2025
What a surprise! I wasn't expecting this much from this product. The plants show incredible vigour and adapt really well to any space. I'm totally blown away.
Translated from Spanish
¡Vaya sorpresa! No esperaba tanto de este producto. Las plantas muestran un vigor increíble y se adaptan muy bien a cualquier espacio. Me ha dejado alucinado.
31/08/2025
I decided to give it a try on the recommendation of other growers and it delivers. The flowering is good, although the smell isn't as strong as I expected. Anyone else having the same experience?
Translated from Spanish
Me animé a probarlo por recomendación de otros cultivadores y cumple. La floración es buena, aunque el aroma no es tan potente como esperaba. ¿A alguien más le sucede lo mismo?
02/03/2024
Incredible! Blackjack from Nirvana Seeds really surprised me.
Translated from Spanish
¡Increíble! Blackjack de Nirvana Seeds realmente me sorprendió.