Vietnamese Black by Blackbird Preservations
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Vietnamese Black lands on the sativa-leaning side of the spectrum, Blackbird Preservations's take on the Unknown Strain × Vietnamese Black line. Indoors it typically finishes flowering in around 105 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Vietnamese Black grows against.
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Similar strains
| Breeder | Blackbird Preservations |
|---|---|
| Type | mostly sativa |
| Flowering time | ±105 days |
| Environment | Outdoors |
| Lineage | Unknown Strain × Vietnamese Black |
| Descendants | Banana Bread, Willie Nelson, Vietnamese Black, V18, Jolt |
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🧬 Explore the family: Unknown Strain · Vietnamese Black · Banana Bread · Willie Nelson · Vietnamese Black · V18 · Jolt
Ancestry Pedigree
Original Strains
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Original Strains
Growing Vietnamese Black: what to expect
As a sativa-leaning plant, plan for a big stretch after the flip (often 100–200%) — flip earlier than feels natural and keep training options ready. Sativa-leaning plants also generally prefer a lighter feed than heavy indicas. Growers familiar with Unknown Strain or Vietnamese Black 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.
Vietnamese Black FAQ
How long does Vietnamese Black take to flower?
Vietnamese Black typically flowers in around 105 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Vietnamese Black an indica or a sativa?
Vietnamese Black is listed as mostly sativa.
What are the parents of Vietnamese Black?
Vietnamese Black was bred from Unknown Strain × Vietnamese Black by Blackbird Preservations.
What environment does Vietnamese Black 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 Vietnamese Black? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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