White Sirius by Flash Seeds
Growers reach for White Sirius as an indica-leaning option, a cross of White Russian × Lowryder out of Flash Seeds. Indoors it typically finishes flowering in around 80 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real White Sirius grows against.
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Similar strains
| Breeder | Flash Seeds |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±80 days |
| Environment | Outdoors |
| Lineage | White Russian × Lowryder |
| Descendants | Russian Haze, Purple Sirius Kush |
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Ancestry Pedigree
Serious Seeds
Serious Seeds
Original Strains
Original Strains
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Original Strains
De Sjamaan
Original Strains
Original Strains
Joint Doctor
Super Sativa Seed Club
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The Seed Bank
Unknown or Legendary
Original Strains
Original Strains
Growing White Sirius: 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 White Russian or Lowryder 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.
White Sirius FAQ
How long does White Sirius take to flower?
White Sirius typically flowers in around 80 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is White Sirius an indica or a sativa?
White Sirius is listed as ruderalis/indica/sativa.
What are the parents of White Sirius?
White Sirius was bred from White Russian × Lowryder by Flash Seeds.
What environment does White Sirius 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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