20 Guage
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Terpenes
20 Guage effects are mostly calming.
20 Guage
20 Guage is a modern auto-flowering variety derived from a multi-generational lineage of AK47, Lowryder, Critical Mass, and Ruderalis. Developed for adaptability, this strain is well-suited for cultivation in both indoor and outdoor environments, requiring a 78-day flowering cycle to reach maturity. While the plant is known for its ease of growth, cultivators should prepare for a characteristically low yield. Within the broader context of cannabis breeding, this strain stands as a notable predecessor, having served as the genetic foundation for the offspring Magnum Opus.
The chemical profile of 20 Guage is defined by a complex arrangement of terpenes, led by a dominant base of myrcene, followed by limonene, caryophyllene, and pinene. The secondary and tertiary notes consist of terpinolene, linalool, humulene, beta-pinene, ocimene, nerolidol, guaiol, bisabolol, camphene, and terpinene. This diverse composition results in an intricate sensory experience where earthy, citrus, and spicy notes intersect to reflect the density of the compound profile.
As a THC-dominant cultivar, 20 Guage is primarily utilized for its consistent ability to induce feelings of relaxation, happiness, and an uplifted state of mind. These effects make the strain a functional choice for individuals seeking relief from stress and pain, while also being frequently sought for its utility in supporting sleep. The stability of its auto-flowering traits combined with these specific therapeutic outcomes ensures it remains a distinct entry in modern genetic libraries.
Terpene Profile
Synergies (+) and conflicts (−) are relative to each other within this profile.
| Terpene | Share | Character | Likely role |
|---|---|---|---|
| myrcene | ~60% | earthy | relaxing · solo |
| limonene | ~28% | citrus | social · creative |
| caryophyllene | ~12% | spicy | relaxing · social |
Research notes below describe isolated terpene mechanisms and early findings. They do not guarantee effects from this strain and are not medical advice.
Russo 2011: naloxone-sensitive analgesia, potentiates barbiturate sleep; dominant sedating terpenoid; blocks hepatic carcinogenesis by aflatoxin.
Russo 2011: increases serotonin in prefrontal cortex + dopamine in hippocampus via 5-HT1A; Johns Hopkins 2024: significantly reduced anxiety vs THC alone.
~12%
spicy
●●○○
Russo 2011: only terpene that is a selective full CB2 agonist (100 nM); Gertsch et al. 2008: acts as dietary cannabinoid; unique anti-inflammatory and gastric cytoprotective properties.
Effects
Reported effects — derived from terpene chemistry and cannabinoid profile.
relaxed
eveningPrimary endpoint of myrcene+linalool sedating combinations; GABA modulation is the dominant mechanistic driver.
happy
anytimeuplifted
morningLimonene anxiolytic/antidepressant via serotonin elevation in prefrontal cortex (Russo 2011); mood improvement without full euphoria; key for balanced-1-1 profiles.
Genetic Profile
Autoflower
Photoperiod-independent. Flowers based on age, not light cycle. Compact and fast.
THC-Dominant
High THC, trace CBD. Psychoactive. Full CB1 agonism — euphoria, appetite, analgesia.
Genealogy
Parentage, ancestry, and genetic relatives of 20 Guage.
Ancestry
Great-great-grandparents
Great-grandparents
Grandparents
Parents
Siblings
Share parents ak47 / lowryder / critical mass / ruderalis
Offspring — 1 strains bred from 20 Guage
Composite Traits
Where to buy 20 Guage
No verified dispensaries on file — find it on Leafly.
Dispensary Locator
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What would 20 Guage × ? produce?
Predict the terpene profile, effects, and growing traits of a cross. Our gene weaver engine votes on dominant traits from both parents.
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Frequently Asked Questions
Is 20 Guage indica or sativa?
20 Guage is modeled here as a autoflower (photoperiod-independent).
What terpene is dominant in 20 Guage?
Myrcene is shown as the dominant terpene at approximately ~60%. Limonene follows as the secondary terpene.
Is 20 Guage good for daytime use?
20 Guage is versatile and works across different times of day depending on dose and individual response.
How accurate is this data?
See the "Data confidence" card in the sidebar. Terpene profiles and effects are chemistry-informed estimates — individual responses depend on phenotype, source, and personal chemistry.