AK20 Auto by B.I.G. Seeds
AK20 Auto is an autoflowering cannabis strain from B.I.G. Seeds, bred by crossing AK47 × Ruderalis. Indoors it typically finishes flowering in around 75 days from sprout. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real AK20 Auto grows against.
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Similar strains
| Breeder | B.I.G. Seeds |
|---|---|
| Type | ruderalis/indica |
| Flowering time | ±75 days |
| Environment | Outdoors, Greenhouse |
| Lineage | AK47 × Ruderalis |
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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
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Growing AK20 Auto: what to expect
Because AK20 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 AK47 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.
AK20 Auto FAQ
How long does AK20 Auto take to flower?
AK20 Auto typically flowers in around 75 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is AK20 Auto an indica or a sativa?
AK20 Auto is listed as ruderalis/indica (autoflowering).
What are the parents of AK20 Auto?
AK20 Auto was bred from AK47 × Ruderalis by B.I.G. Seeds.
What environment does AK20 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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