CMXauto
AutoflowerModernTHC-Dominantevening

Critical Mass XXL

Top flavors

earthycitrusspicy
CalmingEnergizing

Critical Mass XXL effects are mostly calming.

Critical Mass XXL is a modern auto-flowering variety derived from a genetic cross between Critical Mass and Ruderalis. Beyond this lineage, the history of its development remains undocumented, with no specific breeder or origin story formally established in the available record. As an auto-flowering specimen, it is designed for ease of cultivation in both indoor and outdoor environments, reaching maturity with a 63-day flowering period, though it produces a low yield.

Given the strain’s confirmed terpene profile, its sensory experience likely follows a hierarchy led by myrcene, limonene, and caryophyllene, followed by traces of pinene, terpinolene, linalool, humulene, beta-pinene, ocimene, nerolidol, guaiol, bisabolol, camphene, and terpinene. This chemical composition suggests a complex aromatic profile that carries the classic nuances expected from these specific compounds. Users should anticipate a sensory experience that reflects this sequence, though these terpene expressions remain an estimated component of the plant’s overall profile.

The effects of Critical Mass XXL are THC-dominant and characterized by feelings of relaxation, happiness, and an uplifted state of mind. Due to these primary reported effects, the strain is frequently selected as an option for those seeking relief from stress, pain, or difficulty with sleep. While it serves as a distinct modern addition to cannabis collections, there are no recorded instances of this strain being utilized in the development of notable offspring.

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 Critical Mass XXL.

Ancestry

Critical Mass XXLFull tree →
View full lineage tree →

Composite Traits

Use caution if

daytime-productivitymorning-useevening-wind-down

Where to buy Critical Mass XXL

No verified dispensaries on file — find it on Leafly.

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What would Critical Mass XXL × ? 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 Critical Mass XXL

Similar strains

Same primary terpene with overlapping effects.

Frequently Asked Questions

Is Critical Mass XXL indica or sativa?

Critical Mass XXL is modeled here as a autoflower (photoperiod-independent).

What terpene is dominant in Critical Mass XXL?

Myrcene is shown as the dominant terpene at approximately ~60%. Limonene follows as the secondary terpene.

Is Critical Mass XXL good for daytime use?

Critical Mass XXL 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.