Auto GDP by AWB Seeds
Growers reach for Auto GDP as an autoflowering option, a cross of Grand Daddy Purple × Auto Onyx out of AWB Seeds. Indoors it typically finishes flowering in around 65 days from sprout. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Auto GDP grows against.
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Similar strains
| Breeder | AWB Seeds |
|---|---|
| Type | ruderalis/indica |
| Flowering time | ±65 days |
| Environment | Outdoors |
| Lineage | Grand Daddy Purple × Auto Onyx |
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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
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Growing Auto GDP: what to expect
Because Auto GDP 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 Grand Daddy Purple or Auto Onyx 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 GDP FAQ
How long does Auto GDP take to flower?
Auto GDP typically flowers in around 65 days from sprout (autoflower — no light-schedule flip needed). Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Auto GDP an indica or a sativa?
Auto GDP is listed as ruderalis/indica (autoflowering).
What are the parents of Auto GDP?
Auto GDP was bred from Grand Daddy Purple × Auto Onyx by AWB Seeds.
What environment does Auto GDP 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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