Platinum Blue Jack by THC Plants Labs
Growers reach for Platinum Blue Jack as a sativa-leaning option, a cross of Blueberry × Platinum Kush out of THC Plants Labs. Indoors it typically finishes flowering in around 60 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Platinum Blue Jack grows against.
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Similar strains
| Breeder | THC Plants Labs |
|---|---|
| Type | mostly sativa |
| Flowering time | ±60 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Blueberry × Platinum Kush |
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🧬 Explore the family: Blueberry · Platinum Kush
Ancestry Pedigree
DJ Short
Unknown or Legendary
DJ Short
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Unknown or Legendary
Unknown or Legendary
Original Strains
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Original Strains
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Unknown or Legendary
Original Strains
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Clone Only Strains
Dutch Passion
Homegrown Fantaseeds
Original Strains
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Original Strains
Growing Platinum Blue 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 Blueberry or Platinum Kush 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 Blue Jack FAQ
How long does Platinum Blue Jack take to flower?
Platinum Blue Jack typically flowers in around 60 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Platinum Blue Jack an indica or a sativa?
Platinum Blue Jack is listed as mostly sativa.
What are the parents of Platinum Blue Jack?
Platinum Blue Jack was bred from Blueberry × Platinum Kush by THC Plants Labs.
What environment does Platinum Blue 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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