Karma's Jack by Karma Genetics
Karma's Jack lands on the sativa-leaning side of the spectrum, Karma Genetics's take on the Jack Herer × Sannies Jack line. Indoors it typically finishes flowering in around 81 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Karma's Jack grows against.
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Similar strains
| Breeder | Karma Genetics |
|---|---|
| Type | mostly sativa |
| Flowering time | ±81 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Jack Herer × Sannies Jack |
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Growing Karma's 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 Jack Herer or Sannies Jack 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.
Karma's Jack FAQ
How long does Karma's Jack take to flower?
Karma's Jack typically flowers in around 81 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Karma's Jack an indica or a sativa?
Karma's Jack is listed as mostly sativa.
What are the parents of Karma's Jack?
Karma's Jack was bred from Jack Herer × Sannies Jack by Karma Genetics.
What environment does Karma's 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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