Platinum Jack by 420 Seeds
Platinum Jack is an indica-leaning cannabis strain from 420 Seeds, bred by crossing Jack Herer × Haze. Indoors it typically finishes flowering in around 75 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Platinum Jack grows against.
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Similar strains
| Breeder | 420 Seeds |
|---|---|
| Type | 25% indica / 75% sativa |
| Flowering time | ±75 days |
| Environment | Outdoors |
| Lineage | Jack Herer × Haze |
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Growing Platinum 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 Jack Herer or 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.
Platinum Jack FAQ
How long does Platinum Jack take to flower?
Platinum Jack typically flowers in around 75 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Platinum Jack an indica or a sativa?
Platinum Jack is listed as 25% indica / 75% sativa.
What are the parents of Platinum Jack?
Platinum Jack was bred from Jack Herer × Haze by 420 Seeds.
What environment does Platinum 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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