Fire 18 by Unknown or Legendary

Fire 18 strain photo
Type mostly indicaCross Fire Kush × The OG Nr18

Bred by Unknown or Legendary from Fire Kush × The OG Nr18, Fire 18 is an indica-leaning cannabis variety. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Fire 18 grows against.

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Similar strains

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BreederUnknown or Legendary
Typemostly indica
EnvironmentIndoors, Outdoors
LineageFire Kush × The OG Nr18
Descendants5 Leaf Clover, Nic The Bruiser, Agent 18

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🧬 Explore the family: Fire Kush · 5 Leaf Clover · Nic The Bruiser · Agent 18

Ancestry Pedigree

Fire Kush
Clone Only Strains
OG Kush
Clone Only Strains
Unknown Strain
Original Strains
Hindu Kush Indica
Original Strains
The OG Nr18
Reserva Privada
OG Kush
Reserva Privada
OG Kush
Clone Only Strains

Growing Fire 18: 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 Fire Kush or The OG Nr18 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.

Fire 18 FAQ

Is Fire 18 an indica or a sativa?

Fire 18 is listed as mostly indica.

What are the parents of Fire 18?

Fire 18 was bred from Fire Kush × The OG Nr18 by Unknown or Legendary.

What environment does Fire 18 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 Fire 18? 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.