Grapefruit Auto by Linda Seeds
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Growers reach for Grapefruit Auto as an autoflowering option, a cross of Grapefruit × Ruderalis out of Linda Seeds. 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 Grapefruit Auto grows against.
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Similar strains
| Breeder | Linda Seeds |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±60 days |
| Environment | Outdoors |
| Lineage | Grapefruit × Ruderalis |
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Autoflower note: runs on age, not light schedule — see the week-by-week autoflower schedule.
🧬 Explore the family: Grapefruit · Ruderalis
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Original Strains
Growing Grapefruit Auto: what to expect
Because Grapefruit 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 Grapefruit 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.
Grapefruit Auto FAQ
How long does Grapefruit Auto take to flower?
Grapefruit Auto 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 Grapefruit Auto an indica or a sativa?
Grapefruit Auto is listed as ruderalis/indica/sativa (autoflowering).
What are the parents of Grapefruit Auto?
Grapefruit Auto was bred from Grapefruit × Ruderalis by Linda Seeds.
What environment does Grapefruit 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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