secure connectionBlack Jack feminised hits hard but keeps you steady. A true 50 50 hybrid with fast flowering, rich earthy notes and a spicy bite. Big resin, high resistance and even bigger smiles.
Black Jack feminised hits hard but keeps you steady. A true 50 50 hybrid with fast flowering, rich earthy notes and a spicy bite. Big resin, high resistance and even bigger smiles.
Black Jack isn’t just another cool-sounding hybrid. It’s the real deal. A proper 50/50 cross that hits like a sledgehammer wrapped in velvet. You’ve got Black Domina bringing the muscle, and Jack Herer coming in with that old-school, cerebral sativa sparkle. Together? It’s like getting hugged and hyped up at the same time.
This one delivers dense, frosty nugs that reek of earthy spice with a subtle floral twist. It’s smooth, strong, and surprisingly versatile. Whether you’re looking to unwind without switching off or just want something that makes you feel good without flattening you, Black Jack shows up and does the job.
And growers? They love this plant. It’s stable, vigorous, and doesn't need babysitting. Tie it down, top it, or just let it do its thing. It’ll perform either way.
If managing light cycles isn’t your thing, you might appreciate the Black Jack Auto autoflowering version. It handles that part for you and still packs a punch.
Black Jack Fem is what happens when two legends hook up. On one side, Black Domina, the indica that drips with resin and finishes fast. On the other, Jack Herer, bright, euphoric, and straight-up iconic. The result is a hybrid that brings the best of both without leaning too hard in either direction. Balanced, punchy, and built to impress.
Expect a head-to-toe experience here. The high kicks off with a clean, happy buzz. Good vibes, sharp focus, maybe even a little giggle. Then the body comes online with a soft, creeping calm that takes the edge off without gluing you to the sofa.
flavour-wise? Think earthy base notes with a touch of floral sweetness and a spicy kick at the end. Nothing too loud or flashy. Just solid, classic, tasty smoke that feels like it belongs in a well-loved stash jar.
Black Jack clocks in around 21% THC, so it’s got plenty of bite without going overboard. The CBD’s low, but honestly, the high is so nicely rounded you won’t miss it. It’s strong enough to satisfy heavy hitters but smooth enough for a mid-week joint.
There’s a whole line-up working in here. Limonene keeps things bright and focused. Linalool and humulene dial in the chill. Beta-caryophyllene brings that peppery kick. You’ll also catch a bit of eucalyptus and pine in the background, giving it a fresh, clean finish that lingers in the nose.
Whether it’s your first grow or your fiftieth, Black Jack Fem is a safe bet. It’s tough, responsive, and handles stress like a champ. It plays nice with training too. SCROG, LST, topping, you name it. This is the kind of strain that makes you feel like you know what you’re doing, even if you’re winging it.
Indoors, she’ll stretch a bit but nothing wild. Strong side branches, great structure, and she fills out nicely with a bit of encouragement. Expect plants to reach around 130 cm to 170 cm inside. Outdoors, she thrives in warm, dry climates and really puts on size when the conditions are right, reaching up to 270 cm tall but usually between 180 cm and 270 cm. If you’re growing in a greenhouse, she’ll happily take that too.
Black Jack finishes in 8 to 9 weeks with thick, resin-coated colas and zero fluff. Yields indoors average around 400 to 500 gram per m2, while outdoors she can produce anywhere from 500 to 700 gram per plant. It’s one of those strains that doesn’t make you wait too long and still brings plenty to the table.
If you’re after a hybrid that delivers flavour, power, and consistency without fuss, Black Jack’s a no-brainer. It’s a proper workhorse with class. Order your feminised seeds today at WeedSeedsExpress and see why this one’s been a grow tent favorite for years.
Click here for the full strain description.
| Lineage | Black Domina X Jack Herer |
| Flowering Type | photoperiod |
| Gender | feminized |
| Genotype | Hybrid |
| Ratio | 50 % Sativa / 50 % Indica |
| Grower Profile | Advanced |
| THC | Up to 21.00% |
| CBD | Up to 0.60% |
| Yield Indoor | Up to 500 gr./m2 |
| Yield Outdoor | Up to 700 gr./plant |
| Height Indoor | Up to 170 cm |
| Height Outdoor | Up to 270 cm |
| Climate | Mediterranean, Arid, Tropical |
| Flowering Time | 56 to 63 days |
| Flavors | Earthy, Flowery, Pepper |
| Terpines | Phytol, Borneol, Eucalyptol, Terpinolene, Valencene, Alpha Humulene, Beta Pinene, Alpha Pinene, Beta Caryophyllene, Linalool, Limonene, Beta Caryophyllene Oxide |
| Effects | Euphoric, Focused, Happy, Relaxed, Uplifting |
This BlackJack isn't a gamble. Perfect quality seeds from which 17 out of 20 have germinated now.
Thanks you WSE for your support team. However, for a second cultivation, this strain was a bit to hard for me i guess. This strain is probably suitable for more experienced growers, but i got some good yields. Next time i will choose a more easy to grow strain.
Germination the seeds was as simple as ordering.
Blackjack has been my favorite strain for a long time now. I have been training myself with this strain for 1.5 years and am getting better. The seeds develop a plant with an above average height and large buds. Nice plant to experiment with.
The cross of two heavy strains (Black Domina and Jack) makes this strain truely amazing. BlackJ produces produce very dense frosted buds wrapped in orange hairs. During flowering the smell is pretty pungent. A bit like a straight haze. Easy growing and a reasonable flowering time.
What does Black Jack taste like?
Sweet and citrusy with earthy, pine, and spicy notes; sometimes floral and incense-like with a hashy undertone.
What effects can I expect from Black Jack?
A balanced hybrid feel: uplifting, euphoric, and creative up top with relaxing body effects. Potency can be high depending on phenotype and dose.
How long is the flowering time of Black Jack?
Indoors, about 8-9 weeks of flowering. Outdoors, harvest is typically late September to early October in the Northern Hemisphere.
How much does Black Jack yield indoors and outdoors?
Indoors, commonly around 450 grams per m2-600 grams per m2 under good conditions. Outdoors, up to about 700 grams per plant in warm, sunny climates.
How tall does Black Jack grow?
Indoors, medium height around 80 cm-130 cm. Outdoors in open ground, it can reach around 180 cm or more.
Is Black Jack easy to grow?
Generally easy to moderate. It is resilient and responds well to training like topping, LST, and ScrOG, making it suitable for beginners who follow the basics.
Is Black Jack better suited for indoor or outdoor growing?
It performs well both indoors and outdoors. Indoors offers tight environmental control for dense buds; outdoors it thrives in temperate to warm climates—monitor humidity late in flowering.
What are the genetics and type of Black Jack?
Black Jack is a photoperiod hybrid commonly bred from Jack Herer and Black Domina. Some breeders also offer an autoflower version—check the product listing to confirm the type.
How strong is Black Jack (THC/CBD)?
Typically high THC with low CBD. Effects can feel potent, so start low and go slow if you are sensitive.
Ordering Information
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