Black Jack is Sweet Seeds' 50/50 hybrid of Black Domina '98 and a selected Jack Herer, catalogued by the Spanish seed company as variety SWS01. Cathedral incense carried down from the Haze side, sitting over dark Afghan structure and heavy resin. It has a genuine, dated competition record going back to 2008, which is rarer than the phrase award-winning would suggest.
Where It Comes From
Black Jack belongs to the first European wave of feminized photoperiod hybrids: Dutch-era genetics selected down into something a Spanish indoor grower could actually run on a nine-week flip. Sweet Seeds still lists the original photoperiod Black Jack as a 50 percent indica, 50 percent sativa hybrid, separate from the later Black Jack Auto and Black Jack CBD releases built off the same line.
Spelling matters here more than usual. Sweet Seeds' Black Jack is Black Domina '98 x Jack Herer. Several unrelated strains share the name, and other seed companies have run similarly named crosses using entirely different parents. Two words versus one is not a typo — it is a different plant, and the company on the pack is what settles it.
The Cross
Sweet Seeds gives the lineage as its own Black Domina crossed with an exceptional Jack Herer, chosen for the intense incense character associated with Haze. Both parents trace back further.
Black Domina is Afghanistan x Ortega x Northern Lights x Hash Plant, which is the source of the dark color, the compact structure and the resin. Jack Herer is (Northern Lights #5 x Haze) x (Skunk #1 x Haze), which is where the incense and the bright lemon lift come from. Sweet Seeds publishes 16 to 21 percent THC and around 1.0 percent CBD as a catalogue range.
Structurally the two sides pull against each other in a useful way. Black Domina contributes density; Jack Herer contributes stretch. Sweet Seeds reports strong hybrid vigor, heavy resin, nine weeks of indoor flowering and 500 to 600 g/m2 indoors. Planted directly in the ground outdoors with enough sun, it is described as reaching roughly three metres and 500 to 700 g per plant — a resinous, pistil-heavy monster.
The catalogue rounds the character out with citrus, woods, earth, pine and spice, and describes the smoke as traditional, fresh and strong with a sweet lemon background. It is a two-stage cultivar in practice: the Jack Herer side arrives first and is mentally noticeable, the Black Domina side lands later and keeps things grounded. Dose, tolerance, method and phenotype set how sharp that handoff feels.
What It Left Behind
This is the rare page where the awards section is real. Sweet Seeds' catalogue lists ten placements for Black Jack.
Among them: 1st Prize Indoor Hydro at the III and IV Encuentro Por La Normalizacion Y El Consumo Responsable (El Punto, Malaga, 2008 and 2009), 1st Prize Indoor at the I Certamen de Horticultura Cannabica (Montevideo, 2016), 2nd Prize Indoor Hydro at the VII Copa del Gremi Growshops Catalunya Profesional (Barcelona, 2014), 2nd Prize Outdoor at the Cata Copa de Cultivadores de Cannabis in Argentina (2012), and 2nd Prize Outdoor at Secret Cup Napoli (Italy, 2017).
They are named, dated and categorised, which puts them far ahead of generic award-winning copy. A record spanning 2008 to 2017 across Spain, Uruguay, Argentina and Italy tells you something specific: Black Jack held up in competition circuits for close to a decade, and it did it outdoors as well as indoors.
The High Rise Take
Black Jack is Sweet Seeds' Black Domina '98 x Jack Herer — incense and lemon over dark Afghan structure and heavy resin, with a decade of named placements behind it. Check the spelling and the seed company before you buy, then run it nine weeks and let it stretch.