Jack Skellington cannabis seeds packaging — Royal King Seeds Ireland
Sativa
THC 15%
😄 Mood Boost
SativaFeminisedIn Stock

Jack Skellington Feminised

Order Jack Skellington Feminised seeds online in Ireland. A quality sativa cultivar at 15% THC delivering euphoric, happy, talkative. Chosen for a short season and a damp finish. Fast shipping and a germination guarantee.

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€11.86EUR
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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 2026-09-15 on 500 seeds at 20-23°C.

Germination rate: 98.6% (n=500)
Last QC test date: 2026-09-15
Indoor yield: 436-548 g/m² (avg across 8 verified grower reports)
Outdoor yield, Ireland: 448-612 g/plant (avg across 3 verified grower reports)

About Jack Skellington Feminised

Jack Skellington carries terpinolene as its lead note: herbs and cold fruit, rosemary against apple skin, never settling on one of them. Limonene sits beneath it and shows up second, sharp enough to stop the whole thing turning heavy. The plant tests at 15% THC across a 25/75 split, though what decides whether any of this reaches the jar is the cure, not the seed.

Growing it for aroma

Growing Jack Skellington for terpene expression and growing it for weight are not the same project, and it is worth deciding which one you are on. The Terpinolene/Limonene/Ocimene profile does its best work in living soil, where the biology produces compounds a bottle does not contain. Good peat-free compost and worm castings are available in any garden centre here, which makes that approach far less specialist than it sounds.

Stop foliar spraying after the second week of bloom. Anything that lands on a developing trichome is still there at harvest and is tasted rather than seen. In the last three weeks the night temperature decides which terpenes lead: held at 16-18°C the terpinolene comes forward, while a warmer finish protects the lighter ocimene notes.

Then the cure, which is where Irish growers lose most of what they built. A ten to fourteen day hang wants 17°C and something near 58% humidity, and the ambient air here will not supply either for most of the year — a closed room and a small dehumidifier will. Into glass afterwards, burped twice daily for a fortnight. The limonene layer arrives somewhere in weeks three and four, not before.

Flowering: 8 weeks. Indoor yield: 350 gr/m². Outdoor yield: 400 grams. Plant height: Tall. Rated medium difficulty.

What Jack Skellington is like in practice

The catalogue lists euphoric, happy, talkative, and that matches what growers here report back. At 15% 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 Terpinolene and Limonene together leave a finish that keeps shifting across a session.

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

Terpene breakdown

Primary: Terpinolene · Secondary: Limonene · Tertiary: Ocimene. Temperature decides how much of this profile survives. Low vaporisation at 180-188°C keeps limonene and ocimene audible over the terpinolene; run it hotter, or burn it, and all three collapse into one note that is pleasant enough and tells you nothing.

Who it suits

Jack Skellington 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. Photoperiod genetics leave plant size and harvest date under your control — veg longer for a bigger plant, or flip early when the ceiling is low. A bloom of 8 weeks fits inside the season here for outdoor growers, with a tunnel making it comfortable rather than tight.

Effects

🤗Euphoric
74% of people reported feeling Euphoric
😊Happy
65% of people reported feeling Happy
🗣️Talkative
57% of people reported feeling Talkative
🤑Energetic
50% of people reported feeling Energetic
🤩Creative
50% of people reported feeling Creative
😎Uplifted
38% of people reported feeling Uplifted
🧠Focused
35% of people reported feeling Focused
💪Motivated
31% of people reported feeling Motivated
😆Giggly
24% of people reported feeling Giggly

Best For

✦ Anytime
✦ Depression
✦ Fatigue
✦ Stress

Strain Type

Indica 25%Sativa 75%

Strain Data Sheet

🧬THC15% - 20% (Medium-High)
🌿LineageKiller Queen × Jack the Ripper
🔬TypeFeminised Sativa
🌡ClimateWarm / Mediterranean, long season
📅HarvestSept – Nov, S. hemisphere (typical)
📏HeightTall
⚖️YieldTypical for type
🏠Yield Indoor350 gr/m²
🌳Yield Outdoor400 grams
⏱Flowering Time8 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 are responsible for complying with the law where they live.
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Jack Skellington Feminised
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💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
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🔢Scratchable serial number

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Jack Skellington 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
F4
Generations
4+
Breeding Programme
Royal King Genetics Filial Programme — four-generation pheno fixing
Stabilisation Notes — What This Means for Your Grow

Four rounds of filial stabilisation on the Jack Skellington cross. The long-flowering uniformity expression sits uniform; pheno-to-pheno yield variation runs within ±10% of the published numbers.

Breeding Goal

Carry Jack Skellington from F1 cross to F4 production-ready seed stock.

Selection Focus

Chosen for clear-headed terpene expression, structural manageability and a finish that lands inside the published window.

Pollen / Mother Source

Royal King Genetics in-house mother stock — pollen taken from a sibling male drawn from the same selected pheno population.

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