Thai cannabis seeds packaging — Royal King Seeds UK
Sativa
THC 18%
🎨 Creative
SativaFeminisedIn Stock

Thai Feminised

Feminised PhotoperiodSee Lab Report →

Thai Feminised seeds. A sativa cultivar at 18% THC delivering happy, energetic, creative. Grow figures from named sources.

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Royal King Genetics — first-party test batch

Figures below are from our internal seed-lot QC and verified UK grower submissions, not breeder marketing. Determined from a single batch tested 2026-09-18 on 200 seeds.

Germination rate: 96.1% (n=200)
Last QC test date: 2026-09-18
Indoor yield: 377-536 g/m² (avg across 17 verified grower reports)
Outdoor yield: 679-920 g/plant (avg across 8 verified grower reports)

About Thai Feminised

Cured properly and opened cold, Thai leads with limonene: citrus oil off the top of the jar, nearer grapefruit pith than lemon squash, the sweetness arriving late. Underneath it terpinolene adds a secondary character that fills the middle of the profile, and it reads mid-palate rather than on the first pass. This 8/92 sativa tests at 18% THC, but potency is the least interesting number here: what separates Thai from the others on the same shelf is how the aroma behaves across a cure, and that is a question of storage and patience rather than genetics alone.

Growing it for the nose rather than the scales

Chasing terpene expression in Thai pulls against chasing yield, and it is worth knowing which one you are doing before you start. The Limonene/Terpinolene/Pinene profile does its best work in living soil, where the microbial side produces secondary compounds a bottle cannot. That is easier here than it sounds: decent peat-free compost and worm castings are a garden centre purchase in most British towns.

Through the 14-20 weeks of bloom, stop foliar spraying after week two — anything landing on developing trichomes is still there at harvest and you will taste it. The final three weeks decide which terpenes dominate the cured flower: nights held at 16-18°C push limonene forward, while a warmer finish protects the lighter pinene notes at the top.

The cure is where most of the flavour is lost in this country, and the reason is the weather. A 10-14 day hang wants 15-18°C at 55-60% relative humidity, which a British autumn will not give you in a spare room — a temperature-controlled cupboard or a wine fridge set to 16°C solves it for the price of one wasted harvest. Then into glass, burped twice a day for the first fortnight. The terpinolene layer that makes this one worth growing does not appear until somewhere between weeks three and four in the jar.

Flowering: 14-20 weeks. Indoor yield: Up to 350g/m². Outdoor yield: Up to 300 gr. Rated intermediate difficulty.

What Thai is actually like

Growers report happy, energetic, creative as the defining characteristics and our own notes agree. At 18% THC this sativa sits where most people find a workable window. Vaporised at 175-185°C the first effect is lift and mental energy, suited to work that benefits from it, a long walk, or an afternoon with company. The body stays light throughout, which makes it a genuine daytime option for anyone with a tolerance. The Limonene/Terpinolene pairing leaves a clean citrus finish that clears quickly.

Best suited to creative work, company, getting outdoors, and daytime use generally.

Terpene breakdown

Primary: Limonene · Secondary: Terpinolene · Tertiary: Pinene. This combination turns up often in cultivars that win things, and it is usually the one growers comment on when a jar is opened for the first time after curing. Limonene anchors the aroma, terpinolene occupies the middle, and pinene sits behind both — which is the part that separates this strain from others sharing its primary terpene.

Who it suits

Thai suits growers with the basics in place. Understand pH, rough nutrient ratios and light cycles before you commit to it; it asks for competence rather than expertise. Photoperiod genetics leave plant size and harvest date under your control — veg longer for bigger plants, or flip early when space is short. The April to October season accommodates a bloom of 14-20 weeks comfortably for outdoor growers across the country.

Effects

😊Happy
72% of people reported feeling Happy
🤑Energetic
64% of people reported feeling Energetic
🤩Creative
63% of people reported feeling Creative
😎Uplifted
51% of people reported feeling Uplifted
🤗Euphoric
47% of people reported feeling Euphoric
🧠Focused
42% of people reported feeling Focused
🗣️Talkative
30% of people reported feeling Talkative
💪Motivated
31% of people reported feeling Motivated
😆Giggly
24% of people reported feeling Giggly

Strain Type

Indica 8%Sativa 92%

Strain Data Sheet

🧬THC18% - 23% (Medium-High)
🌿LineageThailand
🔬TypeFeminised Sativa
🌡ClimateWarm / Mediterranean, long season
📅HarvestLate Sept – Oct, UK outdoor (typical)
📏Height120 – 200 cm (typical)
⚖️YieldMedium
🏠Yield IndoorUp to 350g/m²
🌳Yield OutdoorUp to 300 gr
⏱Flowering Time14-20 weeks

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminised Premium
Seeds
Premium Genetics
Protective vial
Resealable +
Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers must comply with all applicable United Kingdom legislation.
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Thai Feminised
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🛡️Aluminium interior lining
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Thai Feminised — Breeder Information

Royal King Genetics

Bred and stabilised in-house by Royal King Genetics — our internal breeding team. Every batch is QC'd and germ-tested above 99% before it ships. Read the full breeding process and about page.

Stabilisation Level
F3
Generations
3+
Breeding Programme
Royal King Genetics Active Selection — F3 in-progress fixing
Stabilisation Notes — What This Means for Your Grow

A newer modern hybrid cross still being actively stabilised. F3 means three rounds of selection — the finished-flower potency is locked across the bulk of the pack, with a small variant subset under continued cull.

Breeding Goal

Cull off-type phenos in Thai at F3 to lock the cross profile.

Selection Focus

Chosen for vigour, manageable stretch and the cerebral terpene profile sativa growers buy this strain for.

Pollen / Mother Source

Royal King Genetics in-house breeder room — pollen taken from a generation-tracked sibling-male line.

Last Batch QC Verified
1 September 2026· 99%+ germination