HarleSin by Sin City Seeds
HarleSin is a sativa-leaning cannabis strain from Sin City Seeds, bred by crossing Harlequin × Cannatonic. 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 HarleSin grows against.
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Similar strains
| Breeder | Sin City Seeds |
|---|---|
| Type | mostly sativa |
| Flowering time | ±60 days |
| Environment | Outdoors |
| Lineage | Harlequin × Cannatonic |
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🧬 Explore the family: Harlequin · Cannatonic
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Growing HarleSin: 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 Harlequin or Cannatonic 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.
HarleSin FAQ
How long does HarleSin take to flower?
HarleSin 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 HarleSin an indica or a sativa?
HarleSin is listed as mostly sativa.
What are the parents of HarleSin?
HarleSin was bred from Harlequin × Cannatonic by Sin City Seeds.
What environment does HarleSin 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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