Runtz Muffin cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 29%
⚡ High Potency
IndicaFeminisedIn Stock

Runtz Muffin Feminised

Grow Runtz Muffin Feminised in Ireland. Indica genetics testing at 29% THC. Known for euphoric, calm effects. Ships discreetly nationwide with sourced grow figures.

Select Pack Size
€12.32EUR
1
🇮🇪Free Irish Delivery
🌱Germination Promise
🔒Unmarked Packaging
⚗

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 2026-09-20 on 275 seeds at 21-24°C.

Germination rate: 98.6% (n=275)
Last QC test date: 2026-09-20
Indoor yield: 429-558 g/m² (avg across 13 verified grower reports)
Outdoor yield, Ireland: 411-680 g/plant (avg across 8 verified grower reports)

About Runtz Muffin Feminised

Everything about Runtz Muffin at harvest follows from one decision, which is when you stop. The figures are 550-650 g/m2 indoors and 1000 g/plant outdoors, with resin filling towards 29% THC. Weight arrives late on a plant this indica-leaning — the 71/29 split stacks calyxes hard through the middle weeks and then thickens them. Growers who cut on the calendar rather than the glass lose that last stage, and it is the most valuable one.

Where the weight is won

Three parts of the 56-63 days of bloom account for most of the difference between a good result and an average one on a plant rated 550-650 g/m2 indoors and 1000 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. Twenty to thirty per cent is typical; taking the lowest fans around day seven pushes energy up to the sites that will finish.

Weeks three to five. Caryophyllene 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. Fifteen to twenty per cent amber suits the weight of effect this one is grown for. Outdoors, that falls between late September and mid-October, and the forecast gets a say.

Flowering: 56-63 days. Indoor yield: 550-650 g/m2. Outdoor yield: 1000 g/plant. Plant height: 100-120 cm. Rated easy difficulty.

Flavour, aroma and effect

Runtz Muffin arrives in order. The first draw at 29% THC gives peppercorn heat that lands at the back of the throat. The euphoric, calm character follows in minutes, as weight behind the eyes that works down through the shoulders. By a quarter of an hour it reads as physical stillness rather than sedation — a strong disinclination to stand up. Two to three hours at a sensible dose. Myrcene underneath contributes depth beneath the rest.

Terpene breakdown

Primary: Caryophyllene · Secondary: Myrcene · Tertiary: Bisabolol. 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. Caryophyllene anchors it, myrcene holds the middle, and bisabolol sits behind both — the last of those being what separates this from other strains leading on the same terpene.

Who it suits

Who does well with Runtz Muffin? Indoor growers who want to choose their own timeline. Tunnel growers who want to decide when flowering starts rather than letting August decide it. Anyone with the space to veg it properly first. Rated easy, which means a moderate learning curve that rewards attention without needing specialist kit.

Effects

🤗Euphoric
74% of people reported feeling Euphoric
🧘Calm
67% of people reported feeling Calm
😌Relaxed
58% of people reported feeling Relaxed
😴Sleepy
58% of people reported feeling Sleepy
😊Happy
45% of people reported feeling Happy
🤤Hungry
41% of people reported feeling Hungry
🌿Stress Relief
27% of people reported feeling Stress Relief
💆Body High
24% of people reported feeling Body High
😶‍🌫️Sedated
21% of people reported feeling Sedated

Best For

✦ Evening
✦ Relaxation
✦ Sleep Support

Strain Type

Indica 71%Sativa 29%

Strain Data Sheet

🧬THC29% - 32% (Very High)
🌿LineageZkittlez × Gelato #33 × Orange Punch
🔬TypeFeminised Indica
🌡ClimateCool–temperate / continental
📅HarvestSept – Nov, S. hemisphere (typical)
📏Height100-120 cm
⚖️YieldHigh
🏠Yield Indoor550-650 g/m2
🌳Yield Outdoor1000 g/plant
⏱Flowering Time56-63 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.
1
Runtz Muffin Feminised
royalkingseeds.ie
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

Related Strains

Rainbow Glue cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 22%
📈 High Yield

Rainbow Glue Feminised

EuphoricFocusedCalm
▼
€13.23EUR
Blue Zkittlez cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 20%
🎨 Creative

Blue Zkittlez Feminised

CreativeCalm
▼
€10.95EUR
Blue Zushi cannabis seeds packaging — Royal King Seeds Ireland
Hybrid
THC 28%
⚡ High Potency

Blue Zushi Feminised

RelaxedFocusedCalm
▼
€14.15EUR
Banana Cream OG cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 26%
⚡ High Potency

Banana Cream OG Feminised

EuphoricCreativeCalm
▼
€13.23EUR

Runtz Muffin 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

The Runtz Muffin hybrid sits in the middle of the modern dispensary lineage. Two backcross rounds layered on top of the original cross have locked indica relaxation profile and finish-time uniformity across the pack.

Breeding Goal

Carry a clone-derived 2018-2022 hype-era hybrid through to a stable seed pack.

Selection Focus

Chosen for trichome coverage, stout structure and consistent flowering time across the pack.

Pollen / Mother Source

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

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