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Black Jack Autoflower

A fast plant with a great range of flavour.
  • Sativa Dominant
  • Very High THC
  • Easy To Grow
  • High THC
  • Splash of fresh blueberries
  • 400 to 550 grams/m2

A strong strain with a remarkable pedigree, Black Jack doesn't hold back. Tokers love its unique scent, lovely flavor, and mean mental kick; medical users value it for its soothing properties; and growers just can't resist its charm. These autoflower... Read More

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With over 20 years of experience in the cannabis industry, we have the grow-how from the experts!

We deliver high-quality, fast-germinating seeds with impeccable and stabilized genetics swiftly and discreetly worldwide at a competitive price.

See what our customers say:
Scott H. 02/01/20
Robin C. 02/01/20
Ivan V. 23/01/20
YOTPO Score 9.6 | 1784

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We ship to the USA. We offer tracked shipping from $9.99 and FREE Shipping for orders over $90. Once your order is confirmed, you will receive a tracking ID by email. Your seeds will arrive in between 10-14 days. However, it can take up to 25-30 working days in some cases.

Germination Instructions - Follow our Germination Guide and your seeds should show a taproot within 48 hours.

Germination Guarantee - If your seeds do not germinate following our instructions, contact our support team and we will offer a replacement for free. Find more detailed information on FAQ's section.

Kyle Kushman
Kushman Says:
This plant produces a strong and long-lasting buzz that's not for the faint-hearted. It's not as cloudy as some other smokes, though, and creates a warm, lengthy chill perfect for nights in.
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Black Jack Autoflower

STRAIN PROFILE Black Jack Autoflower

Yield Indoor 400 - 550 g/m2
Yield Outdoor 40 - 250 gr/plant
THC 23%
CBD 1%
HEIGHT 90 cm
All Year
Anxiety Arthritis Cramps Depression Migranes Muscle Spasms Nausea Stress
Creative Energetic Euphoric Focused Hungry Relaxed Uplifted
Berry Blueberry Earthy Pine Sweet Tobacco
Temperate/Continental Sunny/Mediterranean
Black Jack Autoflower Review

Black Jack Autoflower Profile by Kyle Kushman

A strong strain with a remarkable pedigree, Black Jack doesn't hold back. Tokers love its unique scent, lovely flavor, and mean mental kick; medical users value it for its soothing properties; and growers just can't resist its charm. These autoflowering seeds from Homegrown Cannabis Co. produce plants that are easy to handle, with great yields. With no males to worry about, growers can maximize their turnout effortlessly.

Most people associate Black Jack with the popular casino card game. Tokers, though, know it as an excellent high-THC cannabis strain. It’s available in two variants: one is Indica-heavy, while the other is mostly Sativa. The latter is the more recognized of the two.

The rich lineage of the Sativa-heavy Black Jack is well documented. With Jack Herer's mighty cerebral punch and Black Domina's body buzz, it's safe to say it doesn't disappoint when it comes to effects. With THC levels that go as high up as 25%, it’s one of the most potent strains out there. Its robustness and many benefits have earned it plenty of respect and renown in the 420 community.

Loved by recreational and medical users, growers too have now jumped on the bandwagon. By blending an autoflower Sweet Afghani Delicious in with Black Jack's genetics, the breeders were able to create this automatic version. It’s a low-maintenance, fast-maturing specimen with enormous yields. Now – that’s inviting!

Growing Black Jack from Autoflower Seeds

Growing Black Jack is easy, even for newbies. The strain becomes a resinous monster of a plant once it matures, with large, dense buds covered with sticky trichomes. Glistening with crystals, this beauty is proud to boast of its high THC content.

Black Jack Auto can grow in almost any setting but thrives best in a controlled environment. It only reaches about 3 feet tall, so it doesn’t take up much space. Its most attractive trait is its accelerated growth: from seedling to ripe for reaping, the plant only needs nine weeks.

Indoors, a SOG (Sea of Green) setup will prove valuable come flowering time. Without needing much TLC, the plants will flourish bountifully, and by harvest time, you could get1.31 to 1.8 ounces of beautiful buds per square foot.

When grown al fresco, each plant can produce up to 8.75 ounces of fresh buds. It may not be as fruitful as indoor growing, but it’s still pretty decent. To help the plant prosper to its full potential, pick a spot with plenty of sunshine and use organic soil. Given nature’s unpredictability, it will need constant monitoring. In northern areas, you can start harvesting as early as late April up to mid-October.

Fragrance and Flavor

Black Jack Auto has an exotic aroma of sandalwood and earthy pine, along with a musky tobacco note that veteran smokers love. Younger tokers adore its distinct floral undertone, which is a gift from Jack Herer.

Unlike its fragrance, Black Jack's flavor shows no hint of earthiness. On inhale, it has a piney taste with a splash of fresh blueberries, while the exhale is sweet with a malty or creamy quality. The smoke from Black Jack Auto is heavy but smooth.


As you’d expect from such a potent ganja, Black Jack’s high hits fast and goes straight to the head. Immediately after the first puff, you’ll sense a heaviness in your head, followed by an uplifting, euphoric feeling as the buzz progresses. You’ll probably feel emotionally and mentally lighter, as if the sun is suddenly shining a little brighter.

The Sativa gifts keep coming, showering you with extra creativity, focus and energy, and helping boost productivity. Completing tasks won't be a problem, and concocting exciting concepts for new projects comes easy too.

The decent amount of Indica ensures there are some physical rewards as well. Tokers need not wait long for the relaxation to take effect. As the calm sensation makes its way from the neck down to every part of the body, tension will dissipate. It doesn't couch-lock if consumed in moderation – instead, it keeps the mental vigor of the Sativa under control, so users don't go overboard.


Apart from having robust THC levels, Black Jack Auto's CBD content can reach up to 1.4%, giving it immense medicinal potential. Patients seeking relief from physical and mental ailments may well find it with this weed. Its uplifting effects may even appease the symptoms of depression, stress and anxiety.

The plant also inherited Black Domina's painkilling, anti-inflammatory and analgesic properties. It’s popular among users with chronic pain issues caused by the likes of migraines, light headaches, joint pains and muscle spasms.

Black Jack Auto can also cause a severe case of the munchies that cancer patients undergoing chemotherapy and users who have eating disorders may benefit from. It may even halt nausea and vomiting while increasing the appetite.

As with most marijuana strains, Black Jack has a few side effects. Cottonmouth and dry eyes are two of the most common adverse reactions, and drinking plenty of water is usually a good remedy.

Some people may also encounter dizziness, heightened anxiety and mild paranoia. These are usually caused by overconsumption, an error often committed by newbies. THC-sensitive tokers may encounter the same problems, and should approach with caution.

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