2Gauto
AutoflowerModernTHC-Dominantevening

20 Guage

Top flavors

earthycitrusspicy
CalmingEnergizing

20 Guage effects are mostly calming.

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.

myrcene ~60%limonene ~28%caryophyllene ~12%
TerpeneShare
myrcene~60%
limonene~28%
caryophyllene~12%

Research notes below describe isolated terpene mechanisms and early findings. They do not guarantee effects from this strain and are not medical advice.

~60%

earthy

●●●○

Russo 2011: naloxone-sensitive analgesia, potentiates barbiturate sleep; dominant sedating terpenoid; blocks hepatic carcinogenesis by aflatoxin.

~28%

citrus

●●○○

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.

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

20 GuageFull tree →

Offspring — 1 strains bred from 20 Guage

View full lineage tree →

Composite Traits

Use caution if

daytime-productivitymorning-useevening-wind-down

Where to buy 20 Guage

No verified dispensaries on file — find it on Leafly.

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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.

Build a cross with 20 Guage

Similar strains

Same primary terpene with overlapping effects.

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.