Sour Grape Kush by Ultra Genetics
Growers reach for Sour Grape Kush as an indica-leaning option, a cross of Headband × Grapefruit out of Ultra Genetics. 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 Sour Grape Kush grows against.
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Similar strains
| Breeder | Ultra Genetics |
|---|---|
| Type | indica/sativa |
| Flowering time | ±65 days |
| Environment | Outdoors |
| Lineage | Headband × Grapefruit |
| Descendants | Medevac Kush |
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🧬 Explore the family: Headband · Grapefruit · Medevac Kush
Ancestry Pedigree
Reserva Privada
Reserva Privada
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
Reserva Privada
Clone Only Strains
Original Strains
Unknown or Legendary
Clone Only Strains
Original Strains
Growing Sour Grape Kush: 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 Headband or Grapefruit 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 Grape Kush FAQ
How long does Sour Grape Kush take to flower?
Sour Grape Kush 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 Sour Grape Kush an indica or a sativa?
Sour Grape Kush is listed as indica/sativa.
What are the parents of Sour Grape Kush?
Sour Grape Kush was bred from Headband × Grapefruit by Ultra Genetics.
What environment does Sour Grape Kush 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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