The Atom Bomb by Geistgrow

Type mostly indicaFlower ±60 daysCross Atomic Kush × Fire OG Bx3

The Atom Bomb is an indica-leaning cannabis strain from Geistgrow, bred by crossing Atomic Kush × Fire OG Bx3. Indoors it typically finishes flowering in around 60 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real The Atom Bomb grows against.

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Similar strains

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BreederGeistgrow
Typemostly indica
Flowering time±60 days
EnvironmentOutdoors
LineageAtomic Kush × Fire OG Bx3

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🧬 Explore the family: Atomic Kush · Fire OG Bx3

Ancestry Pedigree

Atomic Kush
Bio Vortex
Girl Scout Cookies
Clone Only Strains
GSC Thin Mints
Clone Only Strains
Cherry Pie Kush
Unknown or Legendary
Cherry Pie
Clone Only Strains
Durban Poison
Dutch Passion
Durban Poison
Unknown or Legendary
South Africa Sativa
Original Strains
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
Chemdog
Unknown or Legendary
Indica Sativa
Original Strains
Fire OG Bx3
BC Bud Depot
Fire Kush
Clone Only Strains
OG Kush
Clone Only Strains
Unknown Strain
Original Strains
Hindu Kush Indica
Original Strains
Unknown Strain
Original Strains

Growing The Atom Bomb: 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 Atomic Kush or Fire OG Bx3 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.

The Atom Bomb FAQ

How long does The Atom Bomb take to flower?

The Atom Bomb typically flowers in around 60 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is The Atom Bomb an indica or a sativa?

The Atom Bomb is listed as mostly indica.

What are the parents of The Atom Bomb?

The Atom Bomb was bred from Atomic Kush × Fire OG Bx3 by Geistgrow.

What environment does The Atom Bomb 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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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.