Black Jack 5 seeds + 2 bonus
Black Jack Seeds – Black Domina × Jack Herer by Sweet Seeds
What is Black Jack? Black Jack by Sweet Seeds is a feminised, photoperiod hybrid of Black Domina × Jack Herer with 50% each of Indica and Sativa. Indoors it flowers for about 9 weeks and, according to the manufacturer, yields 500 to 600 g/m²; outdoors, harvest is in early October. An incense-like, spicy Haze aroma, a great deal of resin and a balanced high that relaxes the body and stimulates the mind are typical. Sweet Seeds does not state a THC value. The multiple award-winning strain suits Haze fans who want to combine yield and flavour – in the feminised seeds category. Available in a pack of 5 seeds + 2 bonus.
Sort Details
Manufacturer Information
Genetics & Origin of Black Jack
Black Jack brings together two well-known lines: the resin-rich Black Domina and, according to Sweet Seeds, an extremely aromatic Jack Herer phenotype with classic Haze character. This gave rise to a balanced hybrid with 50% Indica and 50% Sativa, which the breeder describes as vigorous, with a dense flower structure, huge resin production and an intense, incense-like aroma. The strain has won multiple awards: in 2008 and 2009 it took 1st place each time in the Indoor Hydro category at El Punto in Málaga, and in 2008 also 2nd place for the best hash at the X Revolta Verde in Girona; according to the manufacturer, there are further placings as well, for instance at the Copa THC and the Copa Bitox. The seeds are feminised and photoperiod. The strain description gives no information on THC and CBD. One of the two parents is available individually: Jack Herer by Sensi Seeds.
Who Is Black Jack For?
Black Jack is an award-winning hybrid for everyone who wants yield and aroma at the same time. It suits:
- Haze fans who appreciate incense and spice notes
- Indoor growers who work with SCROG
- Yield-focused growers who plan for around 9 weeks of flowering
- Outdoor gardeners with plenty of light and space for plants up to 3 m tall
- Resin and hash lovers
It is less suitable for inconspicuous gardens and low locations, because with plenty of light it grows up to 3 m tall outdoors, according to the manufacturer. You can find more high-yielding strains under High Yield & Short Flowering.
Growing Black Jack: Indoor & Outdoor
Indoor Growing
Indoors, according to Sweet Seeds, Black Jack flowers for about 9 weeks and produces 500 to 600 g/m². The breeder highlights its indoor performance and calls the strain ideal for SCROG: the vigorous hybrid is easy to weave into a net, creating an even canopy. The manufacturer does not give an indoor height. The dense flower structure and the heavy resin coverage call for good air movement and controlled humidity towards the end of flowering; for the intense aroma, a carbon filter is advisable. As the strain is photoperiod, flowering only begins after the switch to 12/12. There is more on SCROG and climate in the Growpedia.
Outdoor Growing
Outdoors, according to the manufacturer, Black Jack shows its full potential under optimal conditions: with plenty of light it grows up to 3 m tall and yields 500 to 700 g per plant. Harvest is in early October. Plants of this size need a sunny spot, plenty of root space and sturdy supports. Sweet Seeds does not give a climate recommendation. Only grow where it is legal to do so.
Effect, Aroma & Flavour of Black Jack
Sweet Seeds describes the scent as incense-like, spicy and floral. In the flavour, a Haze-like note meets earthy depth – an intense incense aroma that the manufacturer recommends above all to Haze fans. It does not state a lab terpene profile. According to the strain description, the effect is balanced: physically relaxing and at the same time mentally stimulating. Sweet Seeds sees the strain at creative sessions just as much as on relaxed evenings. The breeder gives no information on the THC content in the strain description, which is why we do not put a figure on the strength; the heavy resin coverage alone says nothing reliable about it. How intense the effect is in an individual case depends on dose and individual tolerance.
Note: Effect information is based on manufacturer data and user experience and does not constitute medical advice.
Why Buy Black Jack at United Seedbanks?
If you order Black Jack, you should know who you are buying from: United Seedbanks is an established specialist shop for cannabis seeds and stocks Sweet Seeds as a permanent part of its range.
- Original genetics from Sweet Seeds – Black Jack as the breeder's feminised strain in the pack of 5 seeds plus bonus seeds.
- Advice from a specialist retailer – we help if you are torn between several strains or pack sizes.
- Discreet shipping – neutral packaging and free delivery from €100.
- Payment of your choice – credit card, bank transfer or Bitcoin.
- Fresh, verified seeds – professionally stored for a dependable germination rate.
That way you get Black Jack from a reliable source. You can find more strains from this breeder on the Sweet Seeds page.
Frequently Asked Questions about Black Jack
What genetics are in Black Jack?
Black Jack is a cross of Black Domina × Jack Herer with 50% Indica and 50% Sativa. In the shop, Black Domina is also found in Afghan Kush x Black Domina by World of Seeds.
Which awards has Black Jack won?
According to Sweet Seeds, 1st place Indoor Hydro at El Punto in Málaga in 2008 and 2009 as well as 2nd place for the best hash at the X Revolta Verde in Girona in 2008. In addition, the manufacturer cites further placings at the Copa THC and Copa Bitox.
How long does Black Jack flower?
Indoors, about 9 weeks after the switch to 12/12. Outdoors, Sweet Seeds gives early October as the harvest time.
How much yield does Black Jack deliver?
The manufacturer states 500 to 600 g/m² indoors and 500 to 700 g per plant outdoors.
How much THC does Black Jack have?
Sweet Seeds does not state a THC value in the strain description. The manufacturer describes the effect as balanced – physically relaxing and mentally stimulating.