The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 1783Indica

Auto Critical Mass by Advanced Seeds

Critical Mass × Ruderalis

Auto Critical Mass is a feminized, second-generation autoflower from Advanced Seeds, bred for high yields and straightforward cultivation. It combines the genetics of Critical Mass with ruderalis to offer photoperiod independence and a rapid lifecycle.

May help withStress
AromaFruityHoneyMangoCitrusCreamFloralHerbalSweetSkunkyWoody

Appearance

This strain typically remains compact, growing between 60-100 cm indoors and 70-120 cm outdoors. It features tight internode spacing, a strong central cola, and a ring of lateral branches. The buds are dense and heavy, covered in resin, with pistils that mature to a deep orange-rust. Some phenotypes may display faint purple hues on sugar leaves in cooler temperatures.

Aroma & Flavor

The aroma is deeply resinous and sweet, reminiscent of honey and ripe fruit, with a subtle skunky undertone. When dried, the bouquet expands to include notes of mango, toasted wood, and a pastry-like sweetness, sometimes with a fresh herbal lift. Flavors can present as citrus, cream, floral, fruity, herbal, honey, and mango.

Effects

Auto Critical Mass is known for providing calm and focused effects. It offers functional relaxation at lower doses and deeper body relaxation at higher amounts. This profile makes it suitable for day-to-evening use, balancing tranquility with mental clarity.

Terpenes & Cannabinoids

This strain is a THC-dominant Type I chemotype, with THC levels typically ranging from 14-20% and CBD below 1%. Dominant terpenes often include myrcene, limonene, beta-caryophyllene, and humulene, contributing to its layered aroma and effects profile.

Growing

Considered easy to grow, Auto Critical Mass is suitable for both indoor tents and outdoor plots. Its autoflowering nature means it completes its lifecycle from seed to harvest in approximately 65-80 days, independent of light schedules. It is known for uniformity and resilience, making it a dependable choice for growers seeking high yields in a compact plant.

Origins & Lineage

Auto Critical Mass originates from the highly productive Critical Mass line, which itself is a cross of Afghani and Skunk #1 genetics. Advanced Seeds introduced stabilized Cannabis ruderalis to create the autoflowering trait, further refining it into a second-generation hybrid for improved stability and consistency.

Frequently asked questions

What is the THC content of Auto Critical Mass?
Auto Critical Mass typically contains 14-20% THC.
How long does Auto Critical Mass take to grow?
This autoflowering strain completes its lifecycle from seed to harvest in approximately 65-80 days.
What are the dominant terpenes in Auto Critical Mass?
Common terpenes include Myrcene, Limonene, Caryophyllene, and Humulene.
Is Auto Critical Mass suitable for beginners?
Yes, its autoflowering nature, resilience, and straightforward cultivation make it a good option for beginner growers.