Grandaddy Black by Original Sensible Seeds
A indica-leaning cross of Grand Daddy Purple × Black Domina, Grandaddy Black — released by Original Sensible Seeds — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 63 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Grandaddy Black grows against.
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Similar strains
| Breeder | Original Sensible Seeds |
|---|---|
| Type | mostly indica |
| Flowering time | ±63 days |
| Environment | Outdoors |
| Lineage | Grand Daddy Purple × Black Domina |
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🧬 Explore the family: Grand Daddy Purple · Black Domina
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Original Strains
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The Seed Bank
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Original Strains
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Growing Grandaddy Black: 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 Grand Daddy Purple or Black Domina 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.
Grandaddy Black FAQ
How long does Grandaddy Black take to flower?
Grandaddy Black typically flowers in around 63 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Grandaddy Black an indica or a sativa?
Grandaddy Black is listed as mostly indica.
What are the parents of Grandaddy Black?
Grandaddy Black was bred from Grand Daddy Purple × Black Domina by Original Sensible Seeds.
What environment does Grandaddy Black 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 Grandaddy Black? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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