Rosetta Stone XX by Brothers Grimm
Rosetta Stone XX is an indica-leaning cannabis strain from Brothers Grimm, bred by crossing Jack Herer × Cinderella 99. Indoors it typically finishes flowering in around 67 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Rosetta Stone XX grows against.
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Similar strains
| Breeder | Brothers Grimm |
|---|---|
| Type | indica/sativa |
| Flowering time | ±67 days |
| Environment | Outdoors |
| Lineage | Jack Herer × Cinderella 99 |
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Growing Rosetta Stone XX: 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 Cinderella 99 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.
Rosetta Stone XX FAQ
How long does Rosetta Stone XX take to flower?
Rosetta Stone XX typically flowers in around 67 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Rosetta Stone XX an indica or a sativa?
Rosetta Stone XX is listed as indica/sativa.
What are the parents of Rosetta Stone XX?
Rosetta Stone XX was bred from Jack Herer × Cinderella 99 by Brothers Grimm.
What environment does Rosetta Stone XX 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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