Roughneck by Centennial Seeds
A sativa-leaning cross of Jamaican Lambsbread × Purple Rhino, Roughneck — released by Centennial Seeds — shows up in a lot of tents for good reason. 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 Roughneck grows against.
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Similar strains
| Breeder | Centennial Seeds |
|---|---|
| Type | mostly sativa |
| Flowering time | ±67 days |
| Environment | Outdoors |
| Lineage | Jamaican Lambsbread × Purple Rhino |
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🧬 Explore the family: Jamaican Lambsbread · Purple Rhino
Ancestry Pedigree
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Centennial Seeds
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Growing Roughneck: 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 Jamaican Lambsbread or Purple Rhino 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.
Roughneck FAQ
How long does Roughneck take to flower?
Roughneck 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 Roughneck an indica or a sativa?
Roughneck is listed as mostly sativa.
What are the parents of Roughneck?
Roughneck was bred from Jamaican Lambsbread × Purple Rhino by Centennial Seeds.
What environment does Roughneck 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 Roughneck? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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