Matanuska Tundra cannabis seeds packaging — Royal King Seeds Ireland
Hybrid
THC 19%
🎨 Creative
HybridFeminisedIn Stock

Matanuska Tundra Feminised

Matanuska Tundra Feminised — premium hybrid cannabis seeds suited to Irish growing conditions. 19% THC with euphoric, creative, calm 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 2026-09-05 on 325 seeds at 20-23°C.

Germination rate: 97.6% (n=325)
Last QC test date: 2026-09-05
Indoor yield: 430-598 g/m² (avg across 10 verified grower reports)
Outdoor yield, Ireland: 390-532 g/plant (avg across 5 verified grower reports)

About Matanuska Tundra Feminised

Matanuska Tundra carries caryophyllene as its lead note: peppercorn and warm timber, dry rather than sweet, catching slightly at the back of the throat. Myrcene sits beneath it and shows up second, adding weight and body underneath. The plant tests at 19% THC across a 57/43 split, though what decides whether any of this reaches the jar is the cure, not the seed.

Growing it for aroma

Growing Matanuska Tundra for terpene expression and growing it for weight are not the same project, and it is worth deciding which one you are on. The Caryophyllene/Myrcene/Humulene 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 caryophyllene comes forward, while a warmer finish protects the lighter humulene 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 myrcene layer arrives somewhere in weeks three and four, not before.

Flowering: 60-70 days. Indoor yield: 350-375 g/m2. Outdoor yield: 500 - 600 g/plant. Plant height: 0.5-0.75 m. Rated moderate difficulty.

What Matanuska Tundra is like in practice

The catalogue lists euphoric, creative, calm, and that matches what growers here report back. At 19% THC this hybrid sits where the balance is the argument for it. Small doses stay functional, larger ones relax properly, and the 57/43 split means the direction is set by the amount rather than fixed by the plant. The Caryophyllene and Myrcene together leave warmth and spice, drying on the exhale.

Suited to most occasions, with the dose doing the steering.

Terpene breakdown

Primary: Caryophyllene · Secondary: Myrcene · Tertiary: Humulene. The three shift relative to each other across the cure. Straight off the dry the caryophyllene dominates; three or four weeks sealed in glass at 16-18°C and the humulene underneath comes up to meet it. Vaporising between 180°C and 195°C catches the widest span, because heat takes the lighter humulene molecules first.

Who it suits

Matanuska Tundra 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 60-70 days 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
🤩Creative
70% of people reported feeling Creative
🧘Calm
60% of people reported feeling Calm
😌Relaxed
51% of people reported feeling Relaxed
😊Happy
45% of people reported feeling Happy
😎Uplifted
38% of people reported feeling Uplifted
🤤Hungry
34% of people reported feeling Hungry
😴Sleepy
31% of people reported feeling Sleepy
😆Giggly
24% of people reported feeling Giggly

Best For

✦ Anytime
✦ Relaxation
✦ Stress Relief

Strain Type

Indica 57%Sativa 43%

Strain Data Sheet

🧬THC19% - 22% (Medium-High)
🌿LineageBalanced Hybrid (Undisclosed Lineage)
🔬TypeFeminised Hybrid
🌡ClimateTemperate, adaptable
📅HarvestSept – Nov, S. hemisphere (typical)
📏Height0.5-0.75 m
⚖️YieldMedium
🏠Yield Indoor350-375 g/m2
🌳Yield Outdoor500 - 600 g/plant
⏱Flowering Time60-70 days

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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Matanuska Tundra Feminised
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🛡️Aluminium interior lining
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Matanuska Tundra 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
BX2
Generations
3+
Breeding Programme
Two-Generation Backcross Programme — recurrent-parent fixing
Stabilisation Notes — What This Means for Your Grow

Backcrossed twice to the dominant parental line. Matanuska Tundra now expresses terpene fidelity consistently across the population — what made the original cross interesting is preserved without the pheno-roulette of an unstabilised F1.

Breeding Goal

Stabilise the Matanuska Tundra cross into a seed-uniform line.

Selection Focus

Chosen for balanced indica/sativa expression, terpene fidelity and pack-to-pack uniformity.

Pollen / Mother Source

Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.

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