Sour Pink Grapefruit by HortiLab
Sour Pink Grapefruit, from breeder HortiLab, is an indica-leaning strain descended from Sweet Pink Grapefruit × Sour Diesel IBL. Indoors it typically finishes flowering in around 63 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Sour Pink Grapefruit grows against.
🌿 Start a Sour Pink Grapefruit journal — free →
Similar strains
| Breeder | HortiLab |
|---|---|
| Type | indica/sativa |
| Flowering time | ±63 days |
| Environment | Outdoors |
| Lineage | Sweet Pink Grapefruit × Sour Diesel IBL |
| Descendants | Pink Pez |
🌱 Get Sour Pink Grapefruit seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: Sweet Pink Grapefruit · Sour Diesel IBL · Pink Pez
Ancestry Pedigree
Spice of Life Seeds
Clone Only Strains
Original Strains
Original Strains
Reservoir Seeds
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Sensi Seeds
Sensi Seeds
The Seed Bank
Cultivators Choice
Original Strains
Original Strains
Original Strains
Original Strains
Unknown or Legendary
Original Strains
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Cultivators Choice
Unknown or Legendary
Soma Seeds
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Original Strains
Original Strains
Growing Sour Pink 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 Sour Diesel IBL 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.
Sour Pink Grapefruit FAQ
How long does Sour Pink Grapefruit take to flower?
Sour Pink Grapefruit typically flowers in around 63 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Sour Pink Grapefruit an indica or a sativa?
Sour Pink Grapefruit is listed as indica/sativa.
What are the parents of Sour Pink Grapefruit?
Sour Pink Grapefruit was bred from Sweet Pink Grapefruit × Sour Diesel IBL by HortiLab.
What environment does Sour Pink 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.
📷 Growing Sour Pink Grapefruit and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Sour Pink Grapefruit? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
Track your own grow free — the journal grades your environment against these bands →
Get the one-page grow reference card
VPD, pH by medium, deficiency symptoms and dry/cure targets on a single printable page. Free — plus the occasional grow-data breakdown. No spam, unsubscribe in one click.