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black jack weed seeds

Black Jack Feminised Seeds

Black Jack is an exceptional plant that resulted from a cross of Black Domina with a very special Jack Herer pheno-type. It is a 50/50 indica/sativa plant. It is both very powerful as well as being a very highly productive cannabis strain.

Black Jack is a superb plant for any indoor garden and any method or substrate although, having said that, it also performs wonderfully well outdoors when supplied with sufficient sunlight. This rules out any climate region that is cooler than that of the Mediterranean type. While the height attained by indoor plants will depend largely on the length of the period of vegetative growth those which are cultivated outdoors can reach a magnificent 300 cm. tall.

Plants can really spread out when presented with the opportunity and can resemble a spherical form with its plethora of side branches. Indoor yields are very good and growers can expect to harvest between 500 – 600 gr/m 2 in 9 weeks of flowering. Outdoors harvest in the northern hemisphere will be during the first two weeks of October, which should not present a problem with adverse weather conditions in warm climate regions and the yield per plant is likely to be between 500 – 700 gr.

The sweet aromatic qualities of Black Domina serve to temper and soften the incense aroma of the Jack Herer. THC production is high to very high and has been measured at 16% – 21% with approximately 0.6% CBD. The effect is euphoric and happy and is said to be a great selection for parties and other social occasions.

Black jack weed seeds

We have crossed-bred our Black Domina with an exceptional Jack Herer of pleasing and intense aroma similar to the haze’s cathedral incense. The result is SWS01 (Black Jack®), one of our most powerful and productive plant.

It features the great vigor of a hybrid, totally adapted to indoor conditions. Planted outdoor directly in the ground and with enough sunlight it becomes a resinous and hairy monster of about 3 meters of height.

Variety SWS01
Indica/Sativa: 50%/50%
Indoor Yield: 500-600 g/m2
Outdoor Yield: 500-700 g/plant
Indoor Blooming: 9 weeks
Cosecha en exterior: early October

1st Award – Indoor Hydro – III Encuentro Por La Normalización Y El Consumo Responsable – El Punto – Málaga – 2008

2nd Award – Mejor Hashish – X Revolta Verde – Girona – 2008

3rd Award – Outer – V Copa Bitox – Sabadell – 2008

1st Award – Indoor Hidro – IV Encuentro Por La Normalización Y El Consumo Responsable – El Punto – Málaga – 2009

2nd Award – Indoor – Fumaria – Lleida – 2009

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3rd Award – Indoor Hidro – 1ª Copa THC Skunk – Donostia – 2009

2nd Award – Outer – Cata Copa de Cultivadores de Cannabis (CCCC) – Argentina – 2012

2nd Award – Indoor Hydro – VII Copa del Gremi Growshops Catalunya Profesional – Barcelona Grow La Paz – Lleida – 2014

Black Jack Seeds

There’s nothing better than a long-lasting cannabis strain.

We’ve all experienced trichome-dusted flowers that bring you up, only to let you down. Even if a strain has an abundance of THC, the duration of the effects widely vary. If you’re ready to grow a hybrid that’ll keep you elevated for hours on end, we have just the strain for you.

Meet Blackjack — a hybrid strain that packs a potent punch, turns up the terpene content, and unloads ounces of picture-perfect weed.

Read along to discover all of Blackjack’s fascinating traits. From grow tips to where to find Blackjack seeds, we have everything you need to know in this in-depth review.

Black Jack Seeds – Strain ID:

Type: Hybrid
Cannabinoids: 20-25% THC
Terpenes: Terpinolene, Ocimene, Caryophyllene
Effects: Euphoria, Creative, Long-High
Landrace Strain: Black Domina x Jack Herer

Grow Difficulty: Easy to Moderate
Harvest: 9-10 Weeks / 10+ Weeks
Yield: Up to 600g/㎡ / >700g/plant
Height: Up to >6 feet/ Up to 9 feet
(*Indoor / Outdoor)

The Best Black Jack Feminized Seeds in 2022:

• 21% THC
• Harvest: 8-9 Weeks
• Yield: 400-500g/㎡

• Discreet Shipping Worldwide
• Guaranteed Delivery
• Bitcoin Accepted

• 5 seeds – $38
• 10 seeds – $71

About Black Jack Seeds


Sweet Seeds initially created Black Jack by crossing the legendary Black Domina with the award-winning Jack Herer.

Although there are other strains with the same name, Sweet Seeds is widely recognized as the creator of Blackjack seeds.

Cultivators worldwide enjoy Black Jack’s incredible color show near the end of flowering and hefty yields. If you’re ready to join the ranks and produce exceptional cannabis, look no further than Blackjack seeds.

Lastly, you can now find Black Jack seeds in several forms, such as regular or feminized. Depending on your style as a grower, each of these types of Black Jack seeds has its merits.

Growing Black Jack Seeds

Before you germinate Black Jack seeds, allow us to share a few insightful tidbits about the Blackjack strain.

First, Black Jack contains hybrid vigor, which means it grows quickly. As such, you must not allow Black Jack plants to outgrow your garden. Always have a plan beforehand, such as a 3-week maximum vegetation period indoors.

Next, you can utilize both ScrOG and SOG — depending on available space and vegetation time.

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Therefore, one of the essential aspects of growing Black Jack seeds is determining vegetation time in your garden. With a bit of planning, you can easily maximize your Black Jack harvest.

Grow Difficulty:

The Blackjack strain is easy to moderate to grow.

Growing Black Jack plants is easy; however, it’s maintaining it that’s difficult. Overall, Blackjack plants can grow unruly and tall. Therefore, you must prune at opportune moments and add branch support.

Remember, Black Jack plants are top-heavy, and if you forget to trellis or add support — you may find your flowers on the ground.

Optimal Growing Conditions and Climate:

The best growing conditions for Black Jack plants are in Mediterranean climates.

The ideal temperature range is between 72-86°F. Furthermore, the relative humidity of 45% and less is necessary to reduce bud rot or powdery mildew.

Overall, Black Jack seeds were bred for indoor growers. However, if you prefer the great outdoors, worry not — Black Jack performs swimmingly outside as well.

Flowering Time:

Black Jack flowers in 9-10-weeks.

Black Jack is a true hybrid, and as such, it maintains an average flowering time. Your patience, however, will be rewarded with massive nugs that scream top-shelf.

Indoors, Blackjack seeds finish flowering in 9-weeks. If you grow Black Jack outdoors, expect to harvest by the middle of October.


Black Jack produces enough resin-coated buds to make you feel like a lottery winner.

Outdoors, Black Jack plants can produce upwards of 700-grams per plant. If you grow Blackjack seeds indoors, you may harvest up to 600-grams per meter squared.


Remember, everything hinges on Black Jack’s vegetation time.

Outdoors, Blackjack can reach above 3-meters. If you need to ask — Blackjack gets tall. Indoors, however, you can decrease the veg time if you lack overhead space. Overall, your garden’s available space determines how long you can vegetate Black Jack plants.

Resistance to Pests and Mold:

Blackjack is resistant to common pests, mold, and disease.

You must, however, remember to implement preventative techniques to reduce the risk of outbreaks or infestations.

Simple methods, such as keeping the garden free of debris or organic Neem oil applications, are beneficial.

Strain Description and Properties

The Appearance of Blackjack Weed:

If you consider yourself as a cannabis connoisseur — feast your eyes on Blackjack’s buds.

As you gaze at Black Jack’s nugs, you’ll notice lavender hues mixed with lime-green across the bud’s surface. You’ll see nothing but blown-out calyxes and numerous pistils, all of which enhance the 3D effect.

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However, the most notable aspect of Black Jack weed is its outrageous level of resin. As if dipped in trichomes, Black Jack weed glistens when held to the light.

If you’re ready for drop-dead-gorgeous buds, look no further than Blackjack seeds.

You’ll see nothing but blown-out calyxes and numerous pistils, all of which enhance the 3D effect.

Dominant Cannabinoids Found in Blackjack Seeds:

The primary cannabinoid in Blackjack weed is THC.

The overall THC content in Blackjack buds, according to lab results, is 20-25%. Overall, Blackjack weed is rated as strong, so proceed with caution.

Dominant Terpenes Found in Black Jack Seeds:

As you inhale Black Jack weed’s aromatic scent, you’ll quickly pick up notes of pine, spicy sandalwood, morning dew, sweet licorice, and bubble gum.

Once you indulge, your taste buds will be overwhelmed by overtones of sweet bubblegum, pine sap, incense, and raw spice.

The three primary terpenes in Black Jack seeds are:

  • Terpinolene
  • Ocimene
  • Caryophyllene

Effects of Blackjack Weed:

The effects of Black Jack weed are nothing short of astounding.

As you blow out a cloud of terp-infused smoke, you’ll experience a burst of euphoria and creativity. As the effects dig in, everything you see or do instantly becomes interesting.

Furthermore, you may also notice that Black Jack’s effects keep going. Similar to the Energizer Bunny, Black Jack’s effects just don’t seem to quit. You’ll finally plateau after 3-4 hours, and finally, you will experience a profound sense of relaxation.

Medical Properties of Black Jack Seeds:

Black Jack weed is the very definition of medical marijuana. Medical marijuana patients worldwide agree that Blackjack is incredible for a variety of ailments.

Here’s a list of mental and physical conditions that Blackjack weed may assist:

  • Depression
  • Anxiety
  • Chronic Pain
  • Loss of Appetite
  • Inflammation

If you’re a medical marijuana patient that needs long-lasting medicine, the Blackjack strain is the answer.

Negative Effects of Blackjack Weed:

Remember, Black Jack is a potent strain.

If you overindulge, Black Jack might give you a black eye. In other words, Black Jack has the potential to knock you out. If you’re a beginner, allow your tolerance to build by consuming small amounts of Black Jack weed.

Furthermore, Black Jack is known to produce bloodshot eyes and a dry mouth.

Pros/Cons of Growing Black Jack Seeds

  • Desirable Terpene Profile
  • Incredible Bag Appeal
  • Heavy Resin Coverage
  • High THC Content
  • Massive Yield
  • Average Flowering Time
  • Grows Tall

The Best Black Jack Feminized Seeds in 2022:

• 21% THC
• Harvest: 8-9 Weeks
• Yield: 400-500g/㎡

• Discreet Shipping Worldwide
• Guaranteed Delivery
• Bitcoin Accepted