Black Jack

Descrizione

Free shipping on every Blimburn Seeds order, plus an extra 10% off with code FBBPJSY at checkout.

Lineage Black Jack Strain

Black Jack Strain Seeds resulting from the cross between a Black Domina x Jack Herer will produce a hybrid strain Mostly Indica 55% Indica / 45% Sativa. The strain will likely have a Citrus, Pine, Sweet, Woody flavor with a strong Mostly Indica body high.

It also has a Medium THC 15% – 19%, making it a great choice for those looking for a strong and relaxing experience.

Origin

The Black Jack strain is a remarkable creation with origins tracing back to Europe’s renowned seed banks in Amsterdam’s Red Light District. This strain is the result of a cross between two legendary varieties: Black Domina and Jack Herer.

Black Domina, known for its potent indica qualities, blends seamlessly with the balanced sativa traits of Jack Herer. This combination creates a strain with a rich genetic heritage.

Its lineage includes iconic genetics from Skunk #1, OG Kush, Haze, and Northern Lights. The Black Jack seeds inherit a diverse and robust background, making it a favorite among growers and cannabis enthusiasts alike.

Black Jack Strain Awards

Black Jack earned 3rd Place, Best Flower at the Emerald Cup 2019, one of the most prestigious and competitive cannabis events in the industry. Achieving a podium position in the Best Flower category underscores its outstanding bud structure, terpene richness, resin coverage, and overall cultivation performance under expert judging criteria.

This recognition confirms Black Jack’s genetic stability and premium flower quality, highlighting its consistent cannabinoid expression and commercial reliability. Its award winning status reinforces its position as a high caliber hybrid valued for both production efficiency and connoisseur-grade results.

Black Jack Sativa or Indica?

The Black Jack strain leans heavily toward the indica side of the spectrum 55% Indica / 45% Sativa. Its dominant indica genetics come primarily from its Black Domina parent, giving it the classic traits associated with indica strains. These include a relaxing body high and the potential for deep physical relaxation.

Despite its indica dominance, it retains subtle sativa characteristics from Jack Herer, providing a mild cerebral uplift. This balanced profile makes Black Jack seeds an excellent choice for those seeking a strain that calms the body while keeping the mind engaged.

Black Jack Effects

The effects of the Black Jack weed are a perfect blend of relaxation and focus. As an indica dominant hybrid, it offers a soothing body high, ideal for unwinding after a long day. At the same time, its Jack Herer lineage contributes a gentle mental stimulation, enhancing creativity and clarity without overwhelming the user.

Whether managing stress or simply seeking a balanced high, this strain delivers a reliable and enjoyable experience.

Black Jack Flowering Time

One of the highlights of Black Jack seeds is their manageable flowering time, making them popular among cultivators. The strain typically flowers within 8 to 10 weeks, striking a perfect balance between speed and yield. This relatively short cycle allows for multiple harvests in a year under ideal conditions.

Growers appreciate the strain’s resilience and the dense, resin coated buds it produces. Whether grown indoors or outdoors, the Black Jack weeds rewards patience with a bountiful yield, showcasing its robust genetic heritage and consistent performance.

How to Grow Black Jack strain?

BlackJack seeds can be grown indoors or outdoors under optimal conditions, to avoid any problems during their development. Although they are compact and robust, moderately easy to grow and hardy, we should always prevent any pests.

You can use different growing methods to retain and enhance the terpenes and flavors of your Feminized Black Jack weed strain buds.

• Use a quality substrate. Perlite, peat or coco coir are ideal for moisture retention.
• Thanks to the experience of our customers with our Feminized Black Jack seeds, we know that we can increase yields up to 20%.

For optimal indoor cultivation, Blimburn Seeds advises wide, vertical spaces and the use of the ScrOG method to obtain a uniform plane and increase the size of the lower flowers. If you plan to grow our Feminized seeds outdoors, we have developed a grow guide for optimal cultivation in any area of the world.

Remember that our cannabis plants also need good nutrients when our Feminized seeds are seedlings, in their vegetative period and finally in their flowering period.When you grow cannabis seeds outdoors, choose the best date for your crop, a place where our cannabis plants receive the most hours of sunshine.

If on the other hand you like to grow your Feminized seeds indoors and you have good tents, textile pots for growing, led lighting, air extractor, to circulate clean air and of course a good carbon filter to avoid problems with neighbors or the law.Keep daytime temperatures between 68℉-80℉ and nighttime temperatures between 7℉-9℉ cooler.

Black Jack Feminized plants need low humidity to thrive. Keep relative humidity (RH) levels at 55%-60% during the vegetative phase. Reduce RH to around 40% during the flowering phase. By harvest time, you can reduce RH to 30%.

Outdoors, breeders in the northern hemisphere should sow their cannabis seeds in April for harvest in mid October. Healthy Feminized BlackJack cannabis  produce about 7 – 15 oz/plant | 200 – 450 gr/plant of buds each. Indoors, these crops have a flowering time of 8 – 10 weeks and produce about 1.47 – 1.64 oz/ft2 | 450 – 500 gr/m2.

Ideal Climate for Growing

The Black Jack strain flourishes in a Temperate climate, making it an excellent choice for outdoor cultivation. The ideal temperature range for growing this variety lies between 70–80°F (21–27°C). Consistent warmth during the day and cool evenings contribute to robust growth and rich flavor profiles. Black Jack can thrive in regions with well distributed rainfall; however, it is crucial to ensure proper drainage to avoid waterlogged roots, which can hinder development.

Cannabis seeds are sold for collection and genetic preservation. Check the law in your country before germinating them.

Sold by Blimburn Seeds. European orders ship from Spain and are invoiced in euros. Prices on BudBid are converted from Blimburn’s US dollar prices at the European Central Bank rate of 19 October 2026, so the final price at checkout may differ slightly. Adults only.