Auto Critical by ExclusiveSeeds

Auto Critical strain photo
Type ruderalis/indica/sativa · autoFlower ±60 daysCross Critical Exclusive × Ruderalis

9 other breeders' versions of Auto Critical — compare flowering times side by side →

Auto Critical lands on the autoflowering side of the spectrum, ExclusiveSeeds's take on the Critical Exclusive × Ruderalis line. Indoors it typically finishes flowering in around 60 days from sprout. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Auto Critical grows against.

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BreederExclusiveSeeds
Typeruderalis/indica/sativa
Flowering time±60 days
EnvironmentOutdoors
LineageCritical Exclusive × Ruderalis

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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.

🧬 Explore the family: Ruderalis

Ancestry Pedigree

Critical Exclusive
Exclusive Seeds Bank
Critical Mass
Mr Nice Seedbank
Afghanistan Indica
Original Strains
Skunk Nr1
The Seed Bank
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Ruderalis
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 Exclusive or Ruderalis 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 60 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 Exclusive × Ruderalis by ExclusiveSeeds.

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.

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Published by Cultivar (logmygrow.com), a structured grow journal. These reference bands are the same ones the app grades real grows against. Free to cite with a link. Some outbound product links are affiliate links — see disclosures.