Cluster Bomb cannabis seeds packaging — Royal King Seeds Ireland
Indica
THC 20%
🎨 Creative
IndicaFeminisedIn Stock

Cluster Bomb Feminised

Grow Cluster Bomb Feminised in Ireland. Indica genetics testing at 20% THC. Known for euphoric, creative, focused effects. Ships discreetly nationwide with sourced grow figures.

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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 2026-09-10 on 500 seeds at 21-24°C.

Germination rate: 97.5% (n=500)
Last QC test date: 2026-09-10
Indoor yield: 423-584 g/m² (avg across 15 verified grower reports)
Outdoor yield, Ireland: 435-650 g/plant (avg across 10 verified grower reports)

About Cluster Bomb Feminised

Does Cluster Bomb finish outdoors in Ireland? It does, planted out at the end of May and cut by early October. A compact 79/21 plant is easier to shelter and easier to hide, though the density that makes it worth growing is also what holds water after rain. Bloom takes 7-9 weeks, so the harvest date is set by the calendar far more than by your technique.

What should I expect to take off it? 700-795 g/m² indoors and 800 grams outdoors are the published figures, and both assume a full light or a full season plus a root run to match. A tunnel gets you most of the way to the outdoor number; a windowsill will not. At 20% THC the effort is well spent either way.

Is it a sensible first grow? Reasonably. Anyone who has finished one grow will manage this one; it asks for consistency rather than expertise.

Other questions that come up about Cluster Bomb

Soil or coco? Coco with fertigation at EC 1.4-1.8 through bloom if you are there daily and want speed. Peat-free soil with slow amendments — fish, blood and bone, seaweed meal, rock phosphate — if you are not, and want flavour. Both suit this indica; the deciding factor is your week, not the plant.

How does it handle the weather here? The dense canopy shades itself, which is useful on the handful of genuinely warm days and a liability in a wet week. Mulch the root zone, water early, and keep air moving underneath.

When does bloom feed start? Within a week of the first pistils. The 79/21 balance shifts demand quickly at the transition — phosphorus and potassium up, nitrogen down. Soil growers top-dress; coco and hydro switch formula immediately.

Tunnel, outdoors or indoors? A tunnel is the best value of the three here. Indoors you own the 7-9 weeks of bloom completely; outdoors the plant gets light no lamp matches and can reach 800 grams, and pays for it in rain. Flowering: 7-9 weeks. Indoor yield: 700-795 g/m². Outdoor yield: 800 grams. Plant height: 90-140 cm. Rated medium difficulty.

Flavour, aroma and effect

Cluster Bomb arrives in order. The first draw at 20% THC gives peppercorn heat that lands at the back of the throat. The euphoric, creative, focused, 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. 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 bisabolol underneath comes up to meet it. Vaporising between 180°C and 195°C catches the widest span, because heat takes the lighter bisabolol molecules first.

Who it suits

Who does well with Cluster Bomb? 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 medium, which means a moderate learning curve that rewards attention without needing specialist kit.

Effects

🤗Euphoric
74% of people reported feeling Euphoric
🤩Creative
70% of people reported feeling Creative
🧠Focused
62% of people reported feeling Focused
🧘Calm
53% of people reported feeling Calm
😌Relaxed
45% of people reported feeling Relaxed
😴Sleepy
45% of people reported feeling Sleepy
😊Happy
31% of people reported feeling Happy
🤤Hungry
27% of people reported feeling Hungry
🌿Stress Relief
13% of people reported feeling Stress Relief

Best For

✦ Evening
✦ Relaxation
✦ Sleep Support

Strain Type

Indica 79%Sativa 21%

Strain Data Sheet

🧬THC20% - 25% (High)
🌿LineageIndica-Dominant Hybrid (Undisclosed Lineage)
🔬TypeFeminised Indica
🌡ClimateCool–temperate / continental
📅HarvestSept – Nov, S. hemisphere (typical)
📏Height90-140 cm
⚖️YieldHigh
🏠Yield Indoor700-795 g/m²
🌳Yield Outdoor800 grams
⏱Flowering Time7-9 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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Cluster Bomb Feminised
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Cluster Bomb 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
Filial Stabilisation (F4) — four-generation selection
Stabilisation Notes — What This Means for Your Grow

A 2010s production cross stabilised over four generations of selection. Cluster Bomb grows true-to-type with the compact internode spacing that defines the cultivar.

Breeding Goal

Pin compact internode spacing consistency across the Cluster Bomb population.

Selection Focus

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

Pollen / Mother Source

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

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