Auto Monster MASS by Critical Mass Collective
Auto Monster MASS by Critical Mass Collective is the long-awaited autoflowering version of the breeder’s flagship Monster MASS cultivar, bringing its legendary productivity, outstanding vigour and premium flower quality into a fast, reliable autoflowering format.
Developed to preserve the remarkable yields, heavy resin production and robust structure of the original, Auto Monster MASS produces dense, trichome-rich flowers with excellent commercial appeal. Suitable for both indoor and outdoor cultivation, it delivers dependable performance across a wide range of growing environments.
At SeedMasters.com, we carefully select cannabis genetics that combine exceptional flavour, reliable cultivation and premium flower quality—and Auto Monster MASS is one of the flagship autoflowering varieties in the Critical Mass Collective collection.
Genetics
Auto Monster MASS faithfully preserves the characteristics that made the original photoperiod Monster MASS one of Critical Mass Collective’s most celebrated cultivars.
Through careful breeding, it retains the variety’s renowned vigour, strong branching and outstanding flower production while incorporating dependable autoflowering genetics. The result is a stable, high-yielding hybrid capable of producing dense, resin-rich flowers with impressive consistency from seed to harvest.
Flavour and Aroma
Auto Monster MASS delivers a rich, balanced terpene profile that combines sweet floral notes with subtle earthy complexity.
Depending on the phenotype, growers may encounter varying levels of floral sweetness, delicate fruit notes and classic herbal undertones. The highly sought-after “Eerie Blue” phenotype is particularly prized for its fuller, sweeter floral aroma and flavour, while maintaining the same resin production and productivity found throughout the entire line.
Its layered terpene profile makes Auto Monster MASS an excellent choice for growers who appreciate refined floral genetics with subtle fruity character.
Appearance
Auto Monster MASS develops exceptionally dense, resin-coated flowers with outstanding visual appeal.
Plants express three distinct phenotypes: vibrant neon green, lightly purple and the rare “Eerie Blue” selection, which produces striking blue-toned flowers rarely seen in autoflowering varieties. Across all three expressions, buds mature into swollen, heavily frosted flowers covered in thick layers of sparkling trichomes.
As harvest approaches, the sheer weight of the dense flowers often causes branches to bend, highlighting the variety’s remarkable production potential.
Growing Information
Auto Monster MASS is a vigorous autoflowering variety suitable for both indoor and outdoor cultivation.
Seed to harvest: approximately 70–80 days
Height: approximately 60–140cm
Plants develop a thick, well-branched structure capable of supporting multiple heavy flowering sites. All three phenotypes display comparable vigour, yield potential and potency, ensuring consistent performance regardless of expression.
Auto Monster MASS responds particularly well to Screen of Green (SCROG) cultivation, helping create an even canopy and maximise flower production across its strong lateral branches. As with all resin-rich cultivars, monitoring trichome maturity is recommended to determine the ideal harvest window.
Our Take
Auto Monster MASS successfully captures everything growers appreciate about the original Monster MASS while delivering the speed and convenience of modern autoflowering genetics.
Outstanding vigour, generous yields, abundant resin production and the opportunity to discover the rare Eerie Blue phenotype make it one of the standout autoflowering cultivars in the Critical Mass Collective collection.
For growers seeking premium autoflowering cannabis genetics with flagship-level performance, beautiful resin-coated flowers and consistently rewarding harvests, Auto Monster MASS is an exceptional choice.
