Sub Zero #12 (Cannabis Strain) — Strainpedia
Sub Zero #12 (also known as Sub Zero) is an elite Indica-Dominant Hybrid cultivar bred by Grow More Fire Genetics. Derived from the cross of Super Boof x Oreoz, the #12 phenotype (often referenced as the GMLS Breeder Cut) reached “stratosphere” popularity in early 2026 due to its extreme resin webbing, dense frost-coated buds, and a uniquely cooling terpene profile that blends minty pine with heavy diesel funk. The information below is intended strictly for scientific and botanical reference.
Quick Facts
| Genetics | Super Boof x Oreoz |
|---|---|
| Breeder | Grow More Fire Genetics |
| Cut / Phenotype | Sub Zero #12 (GMLS Breeder Cut) |
| Variety | Indica-Dominant Hybrid (approx. 60% Indica / 40% Sativa) |
| Flowering Time | 8–9 weeks (57–63 days indoors) |
| Yield Potential | Moderate to High (reported) |
| Plant Height | Medium; moderate stretch (~1.6x in flower) |
| Climate Preference | Controlled Indoor (cool late-flower temps improve frost and terpene retention) |
| Difficulty | Intermediate (requires stable environment for maximum resin expression) |
Scientific & Botanical Overview
Sub Zero #12 is widely regarded as a modern “frost king” cultivar, producing dense, golf-ball-shaped buds covered in a thick white layer of trichomes that can resemble a glacier-like resin coating. Many phenotypes display emerald green flowers with deep plum or purple undertones, often intensified by cooler late-flower temperatures. The cultivar is frequently associated with extremely high resin density and oily trichome heads, making it highly valued for both premium flower and solventless extraction workflows. Plant structure typically shows moderate stretch with strong bud stacking, requiring canopy management and airflow control to prevent moisture buildup in dense colas.
Effects & Use-Cases (Reported)
- Commonly reported effects: creeping potency, clear mental uplift, calming euphoria, followed by a deep physical “chill” sensation and heavy body relaxation.
- Use-case context: commonly selected for evening decompression, stress relief, burnout recovery, and high-tolerance sessions where potency is desired without immediate mental fog.
- Note: These are observational reports, not medical claims; outcomes are not guaranteed.
Aroma & Flavors
- Aroma: intensely gassy and “cold,” combining frozen gasoline, sharp funk, and cookie-cream sweetness with a strong minty undertone.
- Flavor: menthol-mint and pine on the inhale (often described as cooling in the throat), followed by heavy diesel funk and a creamy vanilla-chocolate cookie finish.
- Terpene associations: limonene, pinene, caryophyllene.
Tested Cannabinoid & Terpene Ranges
| Compound | Typical Range* | Notes |
|---|---|---|
| Δ⁹-THC | ~29–34% | Extremely potent cultivar; frequently discussed as a 2026 benchmark strain. |
| CBD | ~0–1% | Generally present at low, trace levels. |
| Limonene | Not quantified | Associated with citrus lift and bright aromatic sharpness. |
| Pinene | Not quantified | Associated with pine freshness and the reported cooling inhale sensation. |
| Caryophyllene | Not quantified | Associated with diesel funk, spice depth, and body-heavy effects. |
| Terpene Profile | Frozen Gasoline / Cookie Cream | Minty pine, diesel funk, creamy vanilla-chocolate finish. |
*Ranges are literature- and lab-report-informed references and can differ with environment, harvest timing, post-harvest handling, and analytical methods.
Cultivation Notes
- Light Cycle: 18/6 vegetative; 12/12 flowering
- Humidity Targets: 40–50% during flower; dense resinous buds require strong airflow
- Nutrition: Moderate to heavy feeder; often benefits from consistent calcium and sulfur availability for peak trichome development
- Training: Topping, LST, and trellis support recommended; moderate stretch requires canopy shaping for uniform bud development
- Temperature Tip: Maintain late-flower temperatures under 78°F to preserve mint terpenes and maximize purple coloration
- Harvest Window: Late September to early October outdoors (Northern Hemisphere)
Grower Notes (Week-by-Week Snapshot)
- Weeks 1–2 (Transition/Stretch): moderate stretch; establish trellis support; remove weak lower growth to focus energy into primary colas.
- Weeks 3–4: dense bud set begins; light defoliation improves airflow; stabilize environment to prevent humidity spikes.
- Weeks 5–6: peak resin production; buds become extremely frosty; aroma intensifies into sharp gas and mint.
- Weeks 7–8: ripening phase; coloration may deepen; maintain cooler stable temperatures to preserve terpene sharpness.
- Weeks 8–9: final maturity; harvest based on trichome development (cloudy with some amber for maximum “deep chill” effects).
- Post-Harvest: Dry 18–20 °C, 55–60% RH to protect the minty “cold” aromatic finish and preserve volatile terpenes.
Timelines shift with genotype and environment; prioritize plant health markers and trichome maturity over calendar counts.
Genetic Lineage
Sub Zero #12 is a premium phenotype of the Super Boof x Oreoz cross, bred and stabilized through selection work by Grow More Fire Genetics. Super Boof contributes citrus funk, vigor, and strong yield potential, while Oreoz is widely recognized for adding extreme resin density, dark coloration potential, and a deep cookie-gas aromatic foundation. The #12 phenotype became especially popular due to its distinct “frozen” trichome webbing and minty-gas terpene expression, making it one of the most sought-after cuts in early 2026.
Research Insights
The unique “cooling” sensation often reported with Sub Zero #12 is frequently discussed as a terpene-driven effect profile. Terpenes such as pinene may contribute to sharp, pine-forward freshness, while limonene supports mood elevation and mental clarity. The heavy gasoline funk and deep physical relaxation align with the influence of caryophyllene in high-THC indica hybrids. Together, these components may produce a strong entourage effect, resulting in a high that begins with clarity and lift, then transitions into a pronounced full-body “deep chill” experience without immediate sedation.
Frequently Asked Questions
Is Sub Zero #12 an Indica or Sativa?
Sub Zero #12 is generally classified as an Indica-Dominant Hybrid (often described as 60% Indica / 40% Sativa), known for potent body effects with clear mental lift.
What does Sub Zero #12 smell and taste like?
It is known for a “cold” profile combining frozen gasoline, minty pine freshness, and cookie-cream sweetness with vanilla-chocolate undertones.
What are the typical effects?
Reported effects include creeping potency, uplifting clarity, and a strong physical relaxation that many describe as a deep chilled-out body sensation.
How long does Sub Zero #12 take to flower?
Sub Zero #12 typically flowers in 8–9 weeks (57–63 days) indoors.
Is it suitable for beginners?
Sub Zero #12 is generally considered Intermediate in difficulty. Its dense buds and heavy resin production require stable airflow, humidity control, and canopy management for best results.
Educational Disclaimer: This page is provided for scientific and horticultural reference only and does not constitute medical or promotional advice. Cannabis cultivation, possession, and use are regulated by local laws. Always comply with applicable legislation in your region.
