Critical 2.0 Auto by 420 Genetics
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Growers reach for Critical 2.0 Auto as an autoflowering option, a cross of Critical Mass × Critical out of 420 Genetics. Indoors it typically finishes flowering in around 78 days from sprout. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Critical 2.0 Auto grows against.
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Similar strains
| Breeder | 420 Genetics |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±78 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Critical Mass × Critical |
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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
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Growing Critical 2.0 Auto: what to expect
Because Critical 2.0 Auto 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 Critical 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.
Critical 2.0 Auto FAQ
How long does Critical 2.0 Auto take to flower?
Critical 2.0 Auto typically flowers in around 78 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Critical 2.0 Auto an indica or a sativa?
Critical 2.0 Auto is listed as ruderalis/indica/sativa (autoflowering).
What are the parents of Critical 2.0 Auto?
Critical 2.0 Auto was bred from Critical Mass × Critical by 420 Genetics.
What environment does Critical 2.0 Auto 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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