Amnesia cannabis seeds packaging — Royal King Seeds UK
Sativa
THC 20%
🌙 Sleep Aid
SativaFeminisedIn Stock

Amnesia Feminised

Feminised PhotoperiodSee Lab Report →

Amnesia Feminised seeds. A sativa cultivar at 20% THC delivering creative, sleepy, focused. 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 2026-09-20 on 325 seeds.

Germination rate: 98.4% (n=325)
Last QC test date: 2026-09-20
Indoor yield: 375-554 g/m² (avg across 7 verified grower reports)
Outdoor yield: 513-700 g/plant (avg across 6 verified grower reports)

About Amnesia Feminised

Cured properly and opened cold, Amnesia leads with terpinolene: a restless herbal note of rosemary and cold apple skin, with a thread of something floral that moves as you breathe in. Underneath it limonene adds a bright edge that keeps the nose from turning heavy, and it reads mid-palate rather than on the first pass. This 16/84 sativa tests at 20% THC, but potency is the least interesting number here: what separates Amnesia 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 Amnesia pulls against chasing yield, and it is worth knowing which one you are doing before you start. The Terpinolene/Limonene/Ocimene 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 10 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 terpinolene forward, while a warmer finish protects the lighter ocimene 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 limonene layer that makes this one worth growing does not appear until somewhere between weeks three and four in the jar.

Flowering: 10 weeks. Indoor yield: 500 g/m2. Outdoor yield: Up to 700 gr./plant. Rated intermediate difficulty.

What Amnesia is actually like

Growers report creative, sleepy, focused, energetic as the defining characteristics and our own notes agree. At 20% 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 Terpinolene/Limonene pairing leaves a finish that keeps changing across a session.

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

Terpene breakdown

Primary: Terpinolene · Secondary: Limonene · Tertiary: Ocimene. How this profile survives the journey from flower to vapour depends on temperature. Low vaporisation, 180-188°C, keeps the limonene and ocimene audible over the terpinolene 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

Amnesia 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 10 weeks comfortably for outdoor growers across the country.

Effects

🤩Creative
77% of people reported feeling Creative
😴Sleepy
72% of people reported feeling Sleepy
🧠Focused
62% of people reported feeling Focused
🤑Energetic
50% of people reported feeling Energetic
😊Happy
45% of people reported feeling Happy
😎Uplifted
38% of people reported feeling Uplifted
🤗Euphoric
33% of people reported feeling Euphoric
🗣️Talkative
23% of people reported feeling Talkative
💪Motivated
24% of people reported feeling Motivated

Strain Type

Indica 16%Sativa 84%

Strain Data Sheet

🧬THC20% - 23% (High)
🌿LineageSativa-Dominant Hybrid (Undisclosed Lineage)
🔬TypeFeminised Sativa
🌡ClimateWarm / Mediterranean, long season
📅HarvestLate Sept – Oct, UK outdoor (typical)
📏Height120 – 200 cm (typical)
⚖️YieldMedium – High
🏠Yield Indoor500 g/m2
🌳Yield OutdoorUp to 700 gr./plant
⏱Flowering Time10 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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Amnesia Feminised
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Amnesia 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
F5 IBL
Generations
5+
Breeding Programme
IBL Heritage Programme — five-generation inbred fixing
Stabilisation Notes — What This Means for Your Grow

Five generations of inbred selection on the original 1990s landrace-derived Amnesia cuts. We were not chasing a redesign — we locked the cerebral terpene profile that earned this cultivar its reputation. Whatever the next pack throws is what the last pack threw.

Breeding Goal

Bring the original Amnesia reference profile back to true-to-type seed stock.

Selection Focus

Chosen for trichome density, sativa branching architecture and an energising terpene expression.

Pollen / Mother Source

Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.

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