RK

Sativa-dominant17-22% THC

Thai Strain

Thai landrace. 11-13 weeks flowering, 350-450 g/m² indoor yield — observed ranges, not a single figure.

TL;DR

Thai is a sativa-dominant 95% Sativa / 5% Indica cross of Thai landrace. Breeder-documented 17-22% THC, <1% CBD. Flowers in 11-13 weeks, yields 350-450 g/m² indoor / 500-700 g/plant outdoor. Stabilized feminized seeds at Royal King Seeds with germination guarantee.

Type
95% Sativa / 5% Indica
THC
17-22%
CBD
<1%
Flowering
11-13 weeks
Indoor Yield
350-450 g/m²
Outdoor Yield
500-700 g/plant
Difficulty
advanced
Climate
Tropical, equatorial

How to read these figures.Cannabinoid, yield and flowering values are ranges compiled from our own grow-outs and the source breeder's records for this lineage — not a lab certificate for the pack you receive, and not a result your room is guaranteed to hit. Phenotype, light, medium and feed all move them. The germination figure we do test per batch, and that method is published on the germination guarantee page.

Thai cannabis plant in flower
Thai in flower. Photograph of the cultivar, not of a specific release batch.

What is Thai?

Thai is a near-pure Sativa landrace from Thailand, traditionally used for "Thai stick" preparations in the 1960s-70s. THC at 17-22% combined with an exceptionally long 11-13 week flowering window makes it a connoisseur grow. Royal King Seeds carries authentic Thai landrace feminized seeds.

Genetics: Thai landrace
Effects: energetic, creative, cerebral, social
Flavors: herbal, spice, incense, earth
Climate: Tropical, equatorial — long warm season

Reported effects

Thai delivers a long-duration, intensely cerebral, almost psychedelic Sativa high. Effects last 3-4 hours. Terpinolene-led profile.

These are consumption effects reported by growers and consumers for this cultivar. Nothing here is medical advice or a claim that this plant treats, prevents or relieves any condition.

Growing Thai

Thai is for advanced growers: extreme stretch (3-4x), long flowering (11-13 weeks), prefers tropical conditions. Indoor SCROG required. Mold resistance is good.

Frequently Asked Questions

Why does Thai take so long to flower?

Thai is a near-pure equatorial Sativa landrace, evolved in tropical conditions where flowering windows are naturally longer (11-13 weeks).

Compiled and reviewed by the Royal King Genetics team · August 2026. Lineage is the parentage we worked this line from; where a cultivar originated with another breeder, that history belongs to them, not to us. Spotted something wrong? Tell us and we will correct it.

More on the breeding protocol: how a seed line is developed.

Buy Thai Seeds

Royal King Seeds ships Thai feminized seeds from regional warehouses worldwide. Pick the store closest to you for fastest, most discreet delivery.

Related Strains