
Diablo Feminised
Grow Diablo Feminised in Ireland. Hybrid genetics testing at 18% THC. Known for happy, relaxed, sleepy effects. Ships discreetly nationwide with sourced grow figures.
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 2026-09-06 on 300 seeds at 21-24°C.
About Diablo Feminised
Everything about Diablo at harvest follows from one decision, which is when you stop. The figures are up to 200 g/m2 indoors and up to 200 g/plant outdoors, with resin filling towards 18% THC. The 40/50 balance gives steady gain with a lift in the closing fortnight. Outdoors, aim to be finished by mid-October rather than hoping for a dry third week of it.
Where the weight is won
Three parts of the 50-60 days of bloom account for most of the difference between a good result and an average one on a plant rated up to 200 g/m2 indoors and up to 200 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. Around a third is usual. A single pass of training across the tallest shoots keeps the top flat.
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. Ten to fifteen per cent amber sits in the middle of its range. Outdoors, that falls between late September and mid-October, and the forecast gets a say.
Flowering: 50-60 days. Indoor yield: up to 200 g/m2. Outdoor yield: up to 200 g/plant. Plant height: Medium (150-245 cm). Rated moderate difficulty.
Flavour, aroma and effect
Diablo arrives in order. The first draw at 18% THC gives citrus with a bitter edge that lifts off the palate. The happy, relaxed, sleepy character follows in minutes, as head and body together. Thinking stays clear while the muscles let go by degrees, which is what makes the dose, rather than the genetics, the thing that decides the evening. Caryophyllene underneath contributes warmth that keeps it anchored.
Terpene breakdown
Primary: Limonene · Secondary: Caryophyllene · Tertiary: Linalool. 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, caryophyllene holds the middle, and linalool 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 Diablo? 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 moderate, which means a moderate learning curve that rewards attention without needing specialist kit.
Effects
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Strain Data Sheet
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Feminised Premium
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Diablo Feminised — Breeder Information
Royal King GeneticsBred 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.
Diablo runs through our F3 programme. Most of the pack expresses the target trichome production cleanly; the F3-to-F4 cycle is where we close out the last remaining off-types.
Stabilise Diablo across three rounds toward F4 production-ready stock.
Chosen for trichome density, bud structure and the hybrid trait balance the cross was engineered for.
Royal King Genetics in-house breeder room — pollen taken from a generation-tracked sibling-male line.