Auto Blueberry 420 by Bulldog Seeds
Auto Blueberry 420, from breeder Bulldog Seeds, is an autoflowering strain descended from Blueberry × Jack Herer. Indoors it typically finishes flowering in around 53 days from sprout. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Auto Blueberry 420 grows against.
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Similar strains
| Breeder | Bulldog Seeds |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±53 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Blueberry × Jack Herer |
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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
🧬 Explore the family: Blueberry · Jack Herer
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Growing Auto Blueberry 420: what to expect
Because Auto Blueberry 420 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 Blueberry or Jack Herer 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 Blueberry 420 FAQ
How long does Auto Blueberry 420 take to flower?
Auto Blueberry 420 typically flowers in around 53 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Auto Blueberry 420 an indica or a sativa?
Auto Blueberry 420 is listed as ruderalis/indica/sativa (autoflowering).
What are the parents of Auto Blueberry 420?
Auto Blueberry 420 was bred from Blueberry × Jack Herer by Bulldog Seeds.
What environment does Auto Blueberry 420 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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