Double Sour Grapefruit by Piff Coast Farms
Double Sour Grapefruit is an indica-leaning cannabis strain from Piff Coast Farms, bred by crossing Sweet Pink Grapefruit × Piff Coast Sour Diesel. Indoors it typically finishes flowering in around 65 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Double Sour Grapefruit grows against.
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Similar strains
| Breeder | Piff Coast Farms |
|---|---|
| Type | indica/sativa |
| Flowering time | ±65 days |
| Environment | Indoors |
| Lineage | Sweet Pink Grapefruit × Piff Coast Sour Diesel |
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Growing Double Sour Grapefruit: what to expect
As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with Sweet Pink Grapefruit or Piff Coast Sour Diesel 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.
Double Sour Grapefruit FAQ
How long does Double Sour Grapefruit take to flower?
Double Sour Grapefruit typically flowers in around 65 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Double Sour Grapefruit an indica or a sativa?
Double Sour Grapefruit is listed as indica/sativa.
What are the parents of Double Sour Grapefruit?
Double Sour Grapefruit was bred from Sweet Pink Grapefruit × Piff Coast Sour Diesel by Piff Coast Farms.
What environment does Double Sour Grapefruit 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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Facts compiled from public breeder listings. Growing Double Sour Grapefruit? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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