Big Jack by The Moon Seeds
2 other breeders' versions of Big Jack — compare flowering times side by side →
A sativa-leaning cross of Auto Jack × Auto Haze, Big Jack — released by The Moon Seeds — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 90 days after the flip to 12/12. Reported THC is 21% with CBD at 1.2%. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Big Jack grows against.
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Similar strains
| Breeder | The Moon Seeds |
|---|---|
| Type | ruderalis/sativa |
| Flowering time | ±90 days |
| THC | 21% |
| CBD | 1.2% |
| Environment | Outdoors |
| Lineage | Auto Jack × Auto Haze |
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🧬 Explore the family: Auto Jack · Auto Haze
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Growing Big Jack: what to expect
As a sativa-leaning plant, plan for a big stretch after the flip (often 100–200%) — flip earlier than feels natural and keep training options ready. Sativa-leaning plants also generally prefer a lighter feed than heavy indicas. Growers familiar with Auto Jack or Auto Haze 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.
Big Jack FAQ
How long does Big Jack take to flower?
Big Jack typically flowers in around 90 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Big Jack an indica or a sativa?
Big Jack is listed as ruderalis/sativa.
What are the parents of Big Jack?
Big Jack was bred from Auto Jack × Auto Haze by The Moon Seeds.
How strong is Big Jack?
Reported THC for Big Jack is 21% and CBD 1.2%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.
What environment does Big 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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