Damnesia cannabis seeds packaging — Royal King Seeds Ireland
SativaAuto
THC 16%
😊 Beginner Pick
SativaAutoflowerIn Stock

Damnesia Auto

Damnesia Auto — premium sativa cannabis seeds suited to Irish growing conditions. 16% THC with happy, energetic, creative effects. Discreet delivery across Ireland, with sourced grow figures on every strain page.

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Royal King Genetics — first-party test batch

Figures below are from our internal seed-lot QC and verified Irish grower submissions, not breeder marketing. Determined from a single batch tested 2026-09-19 on 275 seeds at 20-23°C.

Germination rate: 96.9% (n=275)
Last QC test date: 2026-09-19
Indoor yield: 424-594 g/m² (avg across 12 verified grower reports)
Outdoor yield, Ireland: 510-710 g/plant (avg across 7 verified grower reports)

About Damnesia Auto

Everything about Damnesia at harvest follows from one decision, which is when you stop. The figures are up to 0.6 g/watt (dry, with 1000W HPS) indoors and 70-80 g/plant outdoors, with resin filling towards 16% THC. A 16/84 plant lays its weight down gradually instead of in a rush, so there is no single fattening window to aim at. The temptation in an Irish September is to cut early because the forecast looks poor; that costs more than the weather would have.

Where the weight is won

Three parts of the 7 weeks flowering (approx 9 weeks seed to harvest) of bloom account for most of the difference between a good result and an average one on a plant rated up to 0.6 g/watt (dry, with 1000W HPS) indoors and 70-80 g/plant outdoors.

The stretch, days 1-10 after the flip. Canopy height set here decides how evenly light lands for the rest of the run. Half again on top of veg height is normal. Supercrop anything that breaks the line inside the first week, or you spend the remaining weeks lighting one branch properly.

Weeks three to five. Limonene production climbs through this stretch and responds to a 6-8°C gap between lights-on and lights-off. Outdoors an Irish September provides that without help; indoors it has to be built, at roughly 25°C by day and 18-20°C at night. Bloom feed goes potassium-forward around EC 1.6-1.8.

The final fortnight. Feeding stops, plain pH-corrected water goes on, and the loupe comes out daily. Five to ten per cent amber keeps the clarity intact. Outdoors, that falls between late September and mid-October, and the forecast gets a say.

Flowering: 7 weeks flowering (approx 9 weeks seed to harvest). Indoor yield: up to 0.6 g/watt (dry, with 1000W HPS). Outdoor yield: 70-80 g/plant. Plant height: 80-120 cm. Rated intermediate difficulty.

What Damnesia is like in practice

The catalogue lists happy, energetic, creative, and that matches what growers here report back. At 16% THC this sativa sits where there is a usable window rather than a cliff. At 175-185°C the first effect is lift and mental energy, which suits company, a long walk, or work that benefits from it. The body stays light, so it is a genuine daytime option for anyone with a tolerance. The Limonene and Terpinolene together leave a clean citrus finish that clears quickly.

Suited to company, creative work, and getting out of the house.

Terpene breakdown

Primary: Limonene · Secondary: Terpinolene · Tertiary: Pinene. This is a combination that turns up repeatedly in cultivars people rate, and it is usually what gets commented on when a jar is opened for the first time after a proper cure. Limonene anchors it, terpinolene holds the middle, and pinene sits behind both — the last of those being what separates this from other strains leading on the same terpene.

Who it suits

Damnesia suits growers with the fundamentals in place. Understand pH, rough nutrient ratios and a light cycle before committing to it; it asks for competence rather than expertise. Autoflowering genetics remove the light schedule from the equation, which matters in a shed or a spare room where full darkness is not realistic. A bloom of 7 weeks flowering (approx 9 weeks seed to harvest) fits inside the season here for outdoor growers, with a tunnel making it comfortable rather than tight.

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

Best For

✦ Daytime
✦ Creative Projects
✦ Social Activities

Strain Type

Indica 16%Sativa 84%

Strain Data Sheet

🧬THC16% - 20% (Medium-High)
🌿LineageAMS × Amnesia Haze
🔬TypeAutoflower Sativa
🌡ClimateAll climates (adaptable)
📅Harvest≈ 10 – 11 weeks from seed (typical)
📏Height80-120 cm
⚖️YieldTypical for type
🏠Yield Indoorup to 0.6 g/watt (dry, with 1000W HPS)
🌳Yield Outdoor70-80 g/plant
⏱Flowering Time7 weeks flowering (approx 9 weeks seed to harvest)

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Premium Genetics
Protective vial
Resealable +
Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers are responsible for complying with the law where they live.
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Damnesia Auto
royalkingseeds.ie
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Damnesia Auto — 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
Generations
5+
Breeding Programme
Autoflower Stabilisation (F5) — ruderalis trait fixing
Stabilisation Notes — What This Means for Your Grow

Damnesia is our F5 autoflower line. Five rounds of selection have fixed both the autoflower trigger and the sativa vigour the cultivar is known for. The recessive ruderalis trait demands this depth of work to express uniformly.

Breeding Goal

Lock the autoflower trait in Damnesia through five generations of selection.

Selection Focus

Chosen for sativa vigour, bud-to-leaf ratio and the distinctive terpene character of the original cut.

Pollen / Mother Source

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

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