Auto Critical Mass by Advanced Seeds
Auto Critical Mass, from breeder Advanced Seeds, is an autoflowering strain descended from Critical Mass × Ruderalis Skunk. Indoors it typically finishes flowering in around 70 days from sprout. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Auto Critical Mass grows against.
🌿 Start a Auto Critical Mass journal — free →
Similar strains
| Breeder | Advanced Seeds |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±70 days |
| Environment | Outdoors |
| Lineage | Critical Mass × Ruderalis Skunk |
🌱 Get Auto Critical Mass seeds →
Affiliate link — supports Cultivar at no cost to you.
Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
🧬 Explore the family: Critical Mass · Ruderalis Skunk
Ancestry Pedigree
Mr Nice Seedbank
Original Strains
The Seed Bank
Cultivators Choice
Original Strains
Original Strains
Original Strains
Sensi Seeds
The Seed Bank
The Seed Bank
Original Strains
Original Strains
Original Strains
The Seed Bank
Growing Auto Critical Mass: what to expect
Because Auto Critical Mass is an autoflower it runs on age, not photoperiod: keep it under 18–20 hours of light from sprout to harvest, start in its final pot, and go easy on training after week 3 — autos never pause to recover. Growers familiar with Critical Mass or Ruderalis Skunk will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
Auto Critical Mass FAQ
How long does Auto Critical Mass take to flower?
Auto Critical Mass typically flowers in around 70 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Auto Critical Mass an indica or a sativa?
Auto Critical Mass is listed as ruderalis/indica/sativa (autoflowering).
What are the parents of Auto Critical Mass?
Auto Critical Mass was bred from Critical Mass × Ruderalis Skunk by Advanced Seeds.
What environment does Auto Critical Mass like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
📷 Growing Auto Critical Mass and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Auto Critical Mass? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
Track your own grow free — the journal grades your environment against these bands →
Get the one-page grow reference card
VPD, pH by medium, deficiency symptoms and dry/cure targets on a single printable page. Free — plus the occasional grow-data breakdown. No spam, unsubscribe in one click.