Holy Grail Kush by DNA Genetics

Holy Grail Kush strain photo
Type mostly indicaFlower ±63 daysCross Holy Grail OG

When DNA Genetics and Reserva Privada teamed up to breed Holy Grail Kush, they basically tried to create a 'desert island' weed—and they succeeded. By crossing the notoriously heavy-hitting Kosher Kush with their sour, fuel-drenched phenotype of The OG #18, they bred an absolute monster. The cannabis community completely lost its mind at the 2011 High Times Cannabis Cup when this strain took 1st place in the Seed Company Hybrids category. Even crazier, it was the first strain in the history of the competition to pull a flawless, perfect score from the judging panel.

In the grow room, Holy Grail Kush is an absolute joy, but she demands respect. She eats heavily and can handle strong nutrient regimens, but you need good airflow because the colas get insanely dense. Growers on the forums constantly talk about the ridiculous frost production—these plants look like they were rolled in crushed glass by week six of flower. The aroma is aggressively loud, punching you in the face with sharp pine, lime, and raw diesel fuel, backed up by a deep, earthy hash funk that lingers in your carbon filter long after the chop.

Smoking this strain is not for the lightweights. It’s an indica-dominant sledgehammer that starts right behind the eyes before melting every muscle in your body. It has that classic OG chest expansion on the inhale, leaving a coat of sour, spicy fuel on your palate. Medical growers have kept Holy Grail in their rotation for over a decade because it absolutely crushes insomnia and chronic pain. It’s the benchmark that modern OG crosses are still measured against, and easily one of the most significant releases of the 2010s.

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BreederDNA Genetics
Typemostly indica
Flowering time±63 days
EnvironmentOutdoors
LineageHoly Grail OG
DescendantsAlien Blackout, Holy Roller OG, Blasphemy, Zero Gravity, Monty Python, OG Hunter, The Wrath

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🧬 Explore the family: Holy Grail OG · Alien Blackout · Holy Roller OG · Blasphemy · Zero Gravity · Monty Python · OG Hunter · The Wrath

Ancestry Pedigree

Holy Grail OG
Crockett Family Farms
Kosher Kush
Reserva Privada
Jew Gold
Clone Only Strains
Mostly Indica
Original Strains
The OG Nr18
Reserva Privada
OG Kush
Reserva Privada
OG Kush
Clone Only Strains
Unknown Strain
Original Strains
Hindu Kush Indica
Original Strains

Growing Holy Grail Kush: 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 Holy Grail 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.

Holy Grail Kush FAQ

How long does Holy Grail Kush take to flower?

Holy Grail Kush 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 Holy Grail Kush an indica or a sativa?

Holy Grail Kush is listed as mostly indica.

What are the parents of Holy Grail Kush?

Holy Grail Kush was bred from Holy Grail OG by DNA Genetics.

What environment does Holy Grail Kush 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 Holy Grail Kush? 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.