
Opium Feminised
Order Opium Feminised seeds online in Ireland. A quality hybrid cultivar at 21% THC delivering euphoric, calm. Chosen for a short season and a damp finish. Fast shipping and a germination guarantee.
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 425 seeds at 20-23°C.
About Opium Feminised
Does Opium finish outdoors in Ireland? It does, planted out at the end of May and cut by early October. The 62/38 balance handles an Irish season without special treatment, which is most of the reason to choose it. Bloom takes 8-9 weeks, so the harvest date is set by the calendar far more than by your technique.
What should I expect to take off it? 400-450 g/m2 indoors and 1000 g/plant 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 21% 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 Opium
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 hybrid; the deciding factor is your week, not the plant.
How does it handle the weather here? Hybrid vigour covers most of what an Irish summer does. Keep the root zone under 28°C and do not transplant into a warm spell.
When does bloom feed start? Within a week of the first pistils. The 62/38 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 8-9 weeks of bloom completely; outdoors the plant gets light no lamp matches and can reach 1000 g/plant, and pays for it in rain. Flowering: 8-9 weeks. Indoor yield: 400-450 g/m2. Outdoor yield: 1000 g/plant. Plant height: <100 cm. Rated medium difficulty.
What Opium is like in practice
The catalogue lists euphoric, calm, and that matches what growers here report back. At 21% THC this hybrid sits where the balance is the argument for it. Small doses stay functional, larger ones relax properly, and the 62/38 split means the direction is set by the amount rather than fixed by the plant. The Myrcene and Limonene together leave earth and faint sweetness, with fruit at the end.
Suited to most occasions, with the dose doing the steering.
Terpene breakdown
Primary: Myrcene · Secondary: Limonene · Tertiary: Pinene. Temperature decides how much of this profile survives. Low vaporisation at 180-188°C keeps limonene and pinene audible over the myrcene; run it hotter, or burn it, and all three collapse into one note that is pleasant enough and tells you nothing.
Who it suits
Opium 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 8-9 weeks fits inside the season here for outdoor growers, with a tunnel making it comfortable rather than tight.
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Opium 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.
A mid-2010s cross stabilised over four generations of selection. Opium grows true-to-type with the cross-derived trait balance that defines the cultivar.
Cull off-type phenos in Opium through filial selection.
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.