
Diamond OG Auto
Diamond OG Auto cannabis seeds for Irish growers. Hybrid strain · 15% THC · euphoric, relaxed, sleepy. Discreet packaging, nationwide delivery, 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 2026-09-12 on 125 seeds at 21-24°C.
About Diamond OG Auto
Everything about Diamond OG at harvest follows from one decision, which is when you stop. The figures are up to 400 g/m2 indoors and up to 350 g/plant outdoors, with resin filling towards 15% THC. The 50/40 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 55-65 days of bloom account for most of the difference between a good result and an average one on a plant rated up to 400 g/m2 indoors and up to 350 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: 55-65 days. Indoor yield: up to 400 g/m2. Outdoor yield: up to 350 g/plant. Plant height: Medium. Rated easy difficulty.
Flavour, aroma and effect
Diamond OG arrives in order. The first draw at 15% THC gives citrus with a bitter edge that lifts off the palate. The euphoric, 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. The three shift relative to each other across the cure. Straight off the dry the limonene dominates; three or four weeks sealed in glass at 16-18°C and the linalool underneath comes up to meet it. Vaporising between 180°C and 195°C catches the widest span, because heat takes the lighter linalool molecules first.
Who it suits
Who does well with Diamond OG? Back-garden and balcony growers in Dublin, Cork and Galway. Anyone who wants a crop dry and put away before the autumn closes in. Indoor growers short of headroom. The autoflowering genetics run to their own clock, so there is no schedule to manage and no anxiety about light leaks. Rated easy, which means a moderate learning curve that rewards attention without needing specialist kit.
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Regular
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Diamond OG Auto — 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.
Diamond OG is our F5 autoflower line. Five rounds of selection have fixed both the autoflower trigger and the bud density the cultivar is known for. The recessive ruderalis trait demands this depth of work to express uniformly.
Reach auto trigger and finish-window uniformity for the Diamond OG pack.
Chosen for trichome density, bud structure and the hybrid trait balance the cross was engineered for.
Royal King Genetics in-house mother stock — pollen taken from a sibling male drawn from the same selected pheno population.