Grand Daddy Purple by Concrete Jungle

Grand Daddy Purple strain photo
Type mostly indicaFlower ±63 daysCross Grand Daddy Purple

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Grand Daddy Purple lands on the indica-leaning side of the spectrum, Concrete Jungle's take on the Grand Daddy Purple line. 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 Grand Daddy Purple grows against.

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BreederConcrete Jungle
Typemostly indica
Flowering time±63 days
EnvironmentOutdoors
LineageGrand Daddy Purple

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🧬 Explore the family: Grand Daddy Purple

Ancestry Pedigree

Grand Daddy Purple
Unknown or Legendary
Purple Urkel
Clone Only Strains
Mostly Indica
Original Strains
Big Bud
The Seed Bank
USA Indica
Original Strains
Purest Indica
Clone Only Strains
Afghani
Unknown or Legendary
Afghani
Unknown or Legendary
Afghanistan Indica
Original Strains
USA Indica
Original Strains

Growing Grand Daddy Purple: 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 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.

Grand Daddy Purple FAQ

How long does Grand Daddy Purple take to flower?

Grand Daddy Purple 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 Grand Daddy Purple an indica or a sativa?

Grand Daddy Purple is listed as mostly indica.

What are the parents of Grand Daddy Purple?

Grand Daddy Purple was bred from Grand Daddy Purple by Concrete Jungle.

What environment does Grand Daddy Purple 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 Grand Daddy Purple? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.

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Published by Cultivar (logmygrow.com), a structured grow journal. These reference bands are the same ones the app grades real grows against. Free to cite with a link. Some outbound product links are affiliate links — see disclosures.