Royal Thai by Spliff Seeds
Royal Thai lands on the sativa-leaning side of the spectrum, Spliff Seeds's take on the Thailand Sativa × Skunk no1 line. Indoors it typically finishes flowering in around 77 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Royal Thai grows against.
🌿 Start a Royal Thai journal — free →
Similar strains
| Breeder | Spliff Seeds |
|---|---|
| Type | mostly sativa |
| Flowering time | ±77 days |
| Environment | Outdoors |
| Lineage | Thailand Sativa × Skunk no1 |
🌱 Get Royal Thai seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: Thailand Sativa
Ancestry Pedigree
Original Strains
Spliff Seeds
Sensi Seeds
The Seed Bank
Cultivators Choice
Original Strains
Original Strains
Original Strains
Growing Royal Thai: 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 Thailand Sativa or Skunk no1 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.
Royal Thai FAQ
How long does Royal Thai take to flower?
Royal Thai typically flowers in around 77 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Royal Thai an indica or a sativa?
Royal Thai is listed as mostly sativa.
What are the parents of Royal Thai?
Royal Thai was bred from Thailand Sativa × Skunk no1 by Spliff Seeds.
What environment does Royal Thai 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 Royal Thai and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Royal Thai? 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.
