John Sinclair by Reeferman
Bred by Reeferman from Congo Mostly Sativa, John Sinclair is a sativa-leaning cannabis variety. Indoors it typically finishes flowering in around 74 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real John Sinclair grows against.
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Similar strains
| Breeder | Reeferman |
|---|---|
| Type | mostly sativa |
| Flowering time | ±74 days |
| Environment | Outdoors |
| Lineage | Congo Mostly Sativa |
| Descendants | King-Kong, Congo Haze |
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🧬 Explore the family: Congo Mostly Sativa · King-Kong · Congo Haze
Ancestry Pedigree
Original Strains
Growing John Sinclair: 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 Congo Mostly Sativa 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.
John Sinclair FAQ
How long does John Sinclair take to flower?
John Sinclair typically flowers in around 74 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is John Sinclair an indica or a sativa?
John Sinclair is listed as mostly sativa.
What are the parents of John Sinclair?
John Sinclair was bred from Congo Mostly Sativa by Reeferman.
What environment does John Sinclair 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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Facts compiled from public breeder listings. Growing John Sinclair? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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