Indica Dominant · Reserva Privada
Fire OG
Fire OG is the OG Kush x SFV OG Kush cross attributed to Cali OG breeder OG Raskal in the early 2010s, with Reserva Privada releasing the most widely circulated seed version through DNA Genetics. The strain became known for one of the highest THC tests in the OG family — peaking above 25 percent in commercial labs — and for the distinctive red-orange pistil coloration that gave the strain its name. The flavor leans heavy fuel-pine on the inhale with a sharp lemon exhale from the SFV side, and plants finish in nine to ten weeks indoors with dense, frosty buds. The high is one of the strongest in the OG catalogue, opening fast and crushing into a heavy body relaxation that puts most users into evening or pre-sleep territory.
Reviewed 2026-05-23· Sources: seedfinder.eu, Reserva Privada catalogue, OG Raskal interviews
Potency
- THC range
- 22–28%
- Typical THC
- 25%
- CBD
- up to 0.1%
Flowering
- Indoor weeks
- 9–10 wk
- Difficulty
- Moderate
- Climate
- Mediterranean, warm dry
Yield & size
- Indoor
- 400-500 g/m²
- Outdoor
- 400-600 g/plant
- Height
- 100-130 cm
Indica / sativa ratio
Terpene profile
The aromatic compounds below shape how Fire OG smells, tastes, and ultimately feels in the body.
- dominant
Myrcene
Sedating, musky, herbal — commonly linked to couch-lock effects.
- secondary
Caryophyllene
Peppery and spicy — the only terpene that binds CB2 receptors, studied for anti-inflammatory action.
- secondary
Limonene
Uplifting citrus — typically associated with mood elevation and stress relief.
- minor
Pinene
Alert and pine-forward — associated with mental clarity and bronchodilation.
Reported side effects
Lineage
Fire OG traces to OG Kush × SFV OG Kush. The cross sits in the OG family, which influences both the terpene profile and the flowering structure described above.
Genetic family tree
Documented parents and grandparents for Fire OG based on breeder catalogues. Library entries are clickable; ancestors not yet documented on this site appear in a lighter, non-linked box.
Strains crossed with Fire OG
Fire OG is a parent of 3 strains in the broader catalogue. These are crosses that carry Fire OG genetics on at least one side of the cross.
Grow profile
Grow profile
- Indica / sativa
- 70% / 30%
- Flowering days
- 63–70 days
- Stretch
- Moderate
- Pest resistance
- Moderate
- Mold resistance
- Moderate
- Training methods
- topping, lst, scrog
Feed schedule for Fire OG
These EC and NPK targets are starting points calibrated for the strain's Indica lean and moderate difficulty rating — not gospel. Drop 15-20% off any EC ceiling on your first run and let the plant tell you where it actually wants to feed.
Suggested feed schedule
- Late veg
- 1.4-1.6 EC
- Early flower
- 1.5-1.7 EC, NPK 2-3-4
- Mid flower
- 1.8-2.0 EC, NPK 1-4-6
- Late flower
- 1.6-1.8 EC
- Final week
- Plain pH-balanced water for the last 7-10 days; light flush if you ran nutrients on the higher end.
Full breakdown of feed math, runoff testing, and salt buildup in our nutrient guide.
What to expect through the grow cycle
Fire OG is documented with a 10-week flower and a compact stretch typical of indica-leaning structure. The visual below maps a documented 14-week cycle built from 4weeks of vegetative growth and the strain's published flowering window.
Published grow reports for Fire OG concentrate the most observational notes on the late-flower ripening window. This timeline is descriptive — it reflects what reports document, not a how-to. Actual week-to-week behaviour varies with phenotype, light intensity, pot size, and environment.
Phase details
- Veg (weeks 1-4)
- The documented vegetative period for Fire OG. Plants establish root structure, leaf canopy, and node count before flower triggering, with a moderate difficulty rating shaping how forgiving the early canopy work tends to be.
- Stretch (weeks 5-8)
- Fire OG is documented as having moderate stretch. Reports describe the plant roughly doubling in height during this phase as the indica-leaning structure establishes its final flowering frame.
- Bud sites (weeks 9-10)
- Pre-flowers form at the nodes and calyxes begin to develop. Grow reports for Fire OGnote this as the window where the canopy's eventual bud distribution becomes visible.
- Bud development (weeks 11-12)
- Flowers thicken and calyxes fatten through this phase. Documented Fire OG runs show the bulk of visible flower mass accumulating here, with resin production accelerating toward the end.
- Ripening (week 13)
- Trichomes transition from clear toward cloudy and amber. Reports for Fire OG describe the Myrcene-led terpene profile maturing through this window, with aroma sharpening week over week.
- Final (week 14)
- Calyx swelling is documented as complete and the harvest window opens. Published Fire OG runs end here, within the 9-10 week flowering range reported by the breeder.
Flavor & aroma
Reported effects
Common questions about Fire OG
Why is it called Fire OG?
The name refers to the distinctive bright red-orange pistil coloration that develops in flower, which gives mature buds a 'flame' appearance. The fuel-forward terpene profile reinforces the name even though there is no actual heat or capsaicin in the strain.
Is Fire OG the parent of Animal Cookies?
Yes — Animal Cookies is the Girl Scout Cookies x Fire OG cross. The Fire OG side contributes the dense Kush bud structure and a fuel-pine note to the otherwise sweet-leaning Cookies profile.
Breeder of record
Reserva Privada
View breeder profile and other strains →
More from Reserva Privada
Strains similar to Fire OG
These picks lean on the same terpene profile and parent genetics as Fire OG — shared dominant terps, overlapping lineage, and matching indica/sativa lean. No star ratings or popularity contests, just overlap on the traits that actually drive a similar grow and smoke.