
Lemon Thai Feminised
Lemon Thai Feminised — hybrid cannabis seeds suited to UK growing conditions. 21% THC with energetic, focused, happy effects. Fast, discreet UK delivery.
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 2026-08-31 on 425 seeds.
About Lemon Thai Feminised
Cured properly and opened cold, Lemon Thai leads with caryophyllene: dry black pepper that catches at the back of the throat, clove and warm wood underneath it. Underneath it myrcene adds depth and weight low down in the profile, and it reads mid-palate rather than on the first pass. This 60/50 hybrid tests at 21% THC, but potency is the least interesting number here: what separates Lemon 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 Lemon Thai pulls against chasing yield, and it is worth knowing which one you are doing before you start. The Caryophyllene/Myrcene/Humulene 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 55-65 days 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 caryophyllene forward, while a warmer finish protects the lighter humulene 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 myrcene layer that makes this one worth growing does not appear until somewhere between weeks three and four in the jar.
Flowering: 55-65 days. Indoor yield: up to 400 g/m2. Outdoor yield: up to 800 g/plant. Rated intermediate difficulty.
What Lemon Thai is actually like
Growers report energetic, focused, happy as the defining characteristics and our own notes agree. At 21% THC this hybrid sits where the balance is the selling point. Taken small it stays functional; taken larger it relaxes properly. The ${indica}/${sativa} split means the direction is set by how much you take rather than fixed by the genetics. The Caryophyllene/Myrcene pairing leaves warmth and spice that dries slightly on the exhale.
Best suited to most occasions — the dose does the steering.
Terpene breakdown
Primary: Caryophyllene · Secondary: Myrcene · Tertiary: Humulene. How this profile survives the journey from flower to vapour depends on temperature. Low vaporisation, 180-188°C, keeps the myrcene and humulene audible over the caryophyllene base. Run it hotter, or burn it, and the three collapse into one note — pleasant enough, but none of the complexity that made it worth choosing.
Who it suits
Lemon 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 55-65 days comfortably for outdoor growers across the country.
Effects
Strain Type
Strain Data Sheet
Packaging
Feminised Premium
Seeds
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Lemon Thai Feminised — Breeder Information
Royal King GeneticsBred 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.
Four rounds of filial stabilisation on the Lemon Thai cross. The flavour saturation expression sits uniform; pheno-to-pheno yield variation runs within ±10% of the published numbers.
Cull off-type phenos in Lemon Thai through filial selection.
Chosen for trichome density, bud structure and the hybrid trait balance the cross was engineered for.
Royal King Genetics in-house breeder room — pollen taken from a generation-tracked sibling-male line.