Auto Critical by Bulk Seed Bank
9 other breeders' versions of Auto Critical — compare flowering times side by side →
A autoflowering cross of Critical Plus 2 Autoflowering, Auto Critical — released by Bulk Seed Bank — shows up in a lot of tents for good reason. 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 grows against.
🌿 Start a Auto Critical journal — free →
Similar strains
| Breeder | Bulk Seed Bank |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±70 days |
| Environment | Outdoors |
| Lineage | Critical Plus 2 Autoflowering |
🌱 Get Auto Critical 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.
Ancestry Pedigree
Dinafem
Dinafem
Dinafem
Clone Only Strains
Mr Nice Seedbank
Original Strains
The Seed Bank
Cultivators Choice
Original Strains
Original Strains
Original Strains
Dinafem
Joint Doctor
Super Sativa Seed Club
Original Strains
The Seed Bank
Unknown or Legendary
Original Strains
Original Strains
Unknown or Legendary
Original Strains
Growing Auto Critical: what to expect
Because Auto Critical 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 Plus 2 Autoflowering 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 FAQ
How long does Auto Critical take to flower?
Auto Critical 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 an indica or a sativa?
Auto Critical is listed as ruderalis/indica/sativa (autoflowering).
What are the parents of Auto Critical?
Auto Critical was bred from Critical Plus 2 Autoflowering by Bulk Seed Bank.
What environment does Auto Critical 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 and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Auto Critical? 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.