Black Jack by Sweet Seeds
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Bred by Sweet Seeds from Black Domina × Jack Herer, Black Jack is an indica-leaning cannabis variety. Indoors it typically finishes flowering in around 63 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Black Jack grows against.
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Similar strains
| Breeder | Sweet Seeds |
|---|---|
| Type | indica/sativa |
| Flowering time | ±63 days |
| Environment | Outdoors |
| Lineage | Black Domina × Jack Herer |
| Descendants | Colombian Jack, Black Jack CBD, Black Jack Autoflower, Black Abyss, Sweet Cheese |
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🧬 Explore the family: Black Domina · Jack Herer · Colombian Jack · Black Jack CBD · Black Jack Autoflower · Black Abyss · Sweet Cheese
Ancestry Pedigree
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Clone Only Strains
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Unknown or Legendary
Original Strains
The Seed Bank
Clone Only Strains
Unknown or Legendary
The Seed Bank
Clone Only Strains
Original Strains
Sensi Seeds
The Seed Bank
Unknown or Legendary
Original Strains
Unknown or Legendary
Sensi Seeds
The Seed Bank
Unknown or Legendary
Original Strains
Original Strains
Original Strains
Sensi Seeds
The Seed Bank
Cultivators Choice
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Original Strains
Growing Black Jack: what to expect
As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with Black Domina or Jack Herer will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
Black Jack FAQ
How long does Black Jack take to flower?
Black Jack typically flowers in around 63 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Black Jack an indica or a sativa?
Black Jack is listed as indica/sativa.
What are the parents of Black Jack?
Black Jack was bred from Black Domina × Jack Herer by Sweet Seeds.
What environment does Black Jack like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
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