Blue D#5 by Old School Genetics
Growers reach for Blue D#5 as a sativa-leaning option, a cross of Northern Lights Nr5 × Josh D OG out of Old School Genetics. Indoors it typically finishes flowering in around 68 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Blue D#5 grows against.
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Similar strains
| Breeder | Old School Genetics |
|---|---|
| Type | mostly sativa |
| Flowering time | ±68 days |
| Environment | Outdoors |
| Lineage | Northern Lights Nr5 × Josh D OG |
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Growing Blue D#5: 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 Northern Lights Nr5 or Josh D OG 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.
Blue D#5 FAQ
How long does Blue D#5 take to flower?
Blue D#5 typically flowers in around 68 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Blue D#5 an indica or a sativa?
Blue D#5 is listed as mostly sativa.
What are the parents of Blue D#5?
Blue D#5 was bred from Northern Lights Nr5 × Josh D OG by Old School Genetics.
What environment does Blue D#5 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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