This high-quality autoflowering strain has quite an impressive lineage. Black Jack's parents are nonother than Black Domina and the world-renowned Jack Herer. Combining these extraordinary strains resulted in an autoflowering version of feminized genetics with superb hybrid vigor, pungent sweet aroma, high THC levels (23%), and strong effect.

Black Jack auto seeds grow into compact plants that are fast flowering, thrive under nearly all circumstances, and reward you with an impressive harvest. Are you ready to find out more about this next-generation autoflowering strain? Just keep on reading!

Why you should buy Black Jack auto seeds

  • Extremely fast flowering

  • Very potent Jack Herer hybrid

  • Finished 9 weeks from germination

Growing Black Jack autoflowering seeds (indoor/outdoor)

You can grow Black Jack auto strain seeds indoors, outdoors, or in a greenhouse.

Being a Sativa dominant (70%) strain, Black Jack auto prefers the warmer climates such as temperate, Mediterranean, and tropical.

Treat her to optimum growing circumstances, and you will be rewarded with fat, dense buds, massive calyxes covered in trichomes, and outstanding resin production.

Growing these seeds indoors using hydroponics or implementing the SOG or SCROG method will help you get the most out of your Black Jack auto seeds and maximize your harvest.

Our black Jack auto are feminized seeds, so you don't have to worry about removing unwanted males from your crop.

Flowering time

One of Black Jack auto's most distinguishing features is its extremely accelerated growth cycle. After germination, she only requires a brief vegetative stage. And with the flowering time of only 7 to 8 weeks, it barely takes 9 weeks from germination before harvest will be just around the corner.

Plant height

While remaining relatively short with a height between 70 and 110 cm regardless of growing indoors or outdoors, Black Jack auto can still fill your growing space nicely.

Her compact stature makes her perfect for limited space indoor cultivation or discreet outdoor growing.

Either way, due to her bushy structure with trichome heavy and resin dense flowers, this tiny Sativa powerhouse is still a force to be reckoned with.

Black Jack auto yield

For an autoflowering version, Black Jack auto plants produce a decent yield.

Indoor growers can rejoice in an average yield of 400 – 550 g m² 

Outdoors, expect to harvest anywhere between 40 and 250 grams per plant, depending on external factors like weather conditions.

Effects of Black Jack auto

Black Jack auto has a high THC content of 23%, which is apparent from the strong effect.

The versatile high starts with potent Sativa-like traits that work mainly cerebral and ensure an energizing, uplifting head buzz, followed by a sense of laser focus, ideal for getting those creative juices flowering.

Subsequently, the Indica properties bring about a calm and relaxed feeling, thanks to which you instantly notice the stress being expelled from the body while engulfing a pleasantly numbing sensation. Who says you can't have it all?!

Medicinally, Black Jack auto's analgesic and numbing properties make it ideal for treating chronic pain, muscle spasms, joint pains, headaches, and migraines. To top that off, this miraculous strain also offers anti-inflammatory traits!

This is precisely why many medicinal cannabis users have praised the multidimensional effects, potency, and higher CBD levels of Black Jack autoflower seeds.

Side effects

Despite its evident potency, Black Jack auto is not a strain that will push you into early surrender or associated with any adverse effects. However, be aware that dry eyes and a dry mouth occur with almost every cannabis variety you smoke.

Smell and taste of Black Jack auto

Black Jack auto sends the user on an incredible odoriferous journey. Oriental spicy notes, incense, and an elicited note of sweet wild blueberry. This exceptional strain offers a beautiful contemporary interpretation of a Jack Herer hybrid cross, completed by a marvelous mixture of sweet and sour and earthy tones.

While it omits the earthy tones, its taste experience is similarly delectable to its delicious aroma. Spicy, sweet, and sour flavored smoke bring your taste pallet into utter rapture and linger on the tongue for a long time.

Black Jack auto exceeds every grower's wildest expectations in this area too.

Origin of Black Jack cannabis seeds

Initially developed by Sweet Seeds, Black Jack is a cross between the Indica-dominant Afghani landrace-derived Black Domina and a perfectly balanced Jack Herer elite clone

Introducing ruderalis elements into this already phenomenal weed resulted in a cannabis strain that is both powerful, taste, and fast and easy to grow.

Buy the best Black Jack auto seeds at Weedseedsexpress

Are you ready to double down on this next-generation autoflowering strain? Due to its accelerated growth cycle, you can realize multiple harvests per season! Furthermore, the Black Jack auto excels in nearly all areas like genetics, fast flowering, dense buds, and impressive yields. Its complex flavor palette and equally alluring pungent sweet aroma tickle your taste buds and awe the senses.

In addition, we accept various secure payment methods and send cannabis seeds to most countries around the world, including the USA. Got any questions? Please send us a message or read our reviews. We pride ourselves on having the best customer service! Don't waste another moment and give our cannabis seeds a try, we guarantee you will not be disappointed. Black Jack auto feminized seeds are now for sale in our shop. Order them today at Weedseedsexpress!

Specifications Black Jack autoflowering seeds

THC level 23%
CBD level 1%
Variety 10% Indica / 70% Sativa / 20% ruderalis
Genetics Jack Herer x Black Domina
Max yield indoor 400 to 550 grams/m²
Max yield outdoor 40 to 250 grams/plant
Height indoor 70 to 110 cm
Height outdoor 70 to 110 cm
Flowering time 42 to 49 days
Fungal Resistance Medium
Growersprofile Beginner
Cultivation Indoor, Outdoor, Greenhouse
Climate Temperate, Mediterranean, Tropical
Flavors Berry, blueberry, Incense, Sour, Spicy, Sweet
Effects Calming, Creative, Energetic, Focused, Relaxed, Uplifting
SOG suitable yes
SCROG suitable yes

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What you can expect from us regarding payment, shipping and the delivery guarantee.

We do our utmost to deliver your order as fast as possible, with free shipping worldwide, discreetly packaged and a guaranteed delivery.

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  • Delivery time - You can expect your order within 15 to 26 business days on average.

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Black Jack autoflowering alternatives

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Black Jack autoflowering seeds


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