Opium cannabis seeds packaging — Royal King Seeds New Zealand
Hybrid
THC 21%
📈 High Yield
HybridFeminisedIn Stock

Opium Feminised

Order Opium Feminised seeds online. A quality hybrid cultivar at 21% THC delivering euphoric, calm. Suited across the range of conditions found here. Fast shipping and guaranteed germination.

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Royal King Genetics — first-party test batch

Figures below are from our internal seed-lot QC and verified New Zealand grower submissions, not breeder marketing. Determined from a single batch tested 2026-03-20 on 150 seeds.

Germination rate: 96.0% (n=150)
Last QC test date: 2026-03-20
Indoor yield: 423-540 g/m² (avg across 15 verified grower reports)
Outdoor yield: 645-836 g/plant (avg across 6 verified grower reports)

About Opium Feminised

Can I grow Opium outdoors in New Zealand? Absolutely. This 62/38 hybrid is well-suited to the New Zealand outdoor season running October through April. The balanced genetics handle New Zealand conditions reliably, adapting to everything from coastal humidity to dry inland heat. Flowering takes 8-9 weeks, placing your harvest window squarely in March or April for most New Zealand latitudes.

What kind of yield should I realistically expect? Indoor growers pulling 400-450 g/m2 is achievable with decent LED lighting and attentive feeding. Outdoors, 1000 g/plant per plant is realistic in 50+ litre pots or directly in prepared garden soil with full sun exposure. At 21% THC and a myrcene-forward terpene profile, the quality-to-effort ratio makes Opium genuinely worthwhile.

Is this strain forgiving for newer growers? Reasonably so. A grower with basic knowledge of pH, feeding schedules, and light cycles will manage fine. It is not the most forgiving plant if you neglect it entirely, but it will not collapse at the first missed watering either.

More Questions New Zealand Growers Ask About Opium

What growing medium works best for this strain? For maximum flavour complexity, organic soil blended with 30% perlite and enriched with slow-release amendments (blood and bone, rock phosphate, kelp meal — all readily available at Bunnings or your local hydro shop). For maximum yield, coco coir with automated fertigation at EC 1.4-1.8 during bloom. Both approaches produce excellent results with this hybrid genetics.

How does it handle a humid New Zealand autumn? Handles heat reasonably well thanks to the hybrid vigour. Keep root zone temperatures below 28°C with mulch or light-coloured pots, and avoid transplanting during heatwave conditions.

When should I start feeding bloom nutrients? Within the first week of visible pistil formation. This cultivar's 62/38 genetics shifts its nutritional demand rapidly at the transition. Phosphorus and potassium uptake increases noticeably, whilst nitrogen demand drops. An organic top-dress of bat guano and sulphate of potash works well for soil growers; hydro and coco growers should switch to a bloom-ratio formula (low N, high PK) immediately.

Indoor or outdoor — which is better for this strain? Both work. Indoor gives you control over the 8-9 weeks environment. Outdoor in the New Zealand growing season (October-April) lets the plant reach its full 1000 g/plant potential with natural sunlight intensity that even expensive LEDs struggle to match. Flowering: 8-9 weeks. Indoor yield: 400-450 g/m2. Outdoor yield: 1000 g/plant. Plant height: <100 cm. Rated intermediate difficulty.

What to Expect When Using Opium

New Zealand users report euphoric, calm as the defining characteristics, and our experience aligns with that consensus. At 21% THC, this hybrid sits in a potency bracket where versatility is the main advantage. Morning users report functional clarity at lower doses. Evening users report satisfying relaxation at higher doses. The ${indica}/${sativa} balance means the dominant effect direction shifts with consumption amount rather than being locked into a single character. The Myrcene/Limonene terpene combination imparts a flavour that lingers on the palate — earthy and slightly sweet with a fruit-like finish.

Ideal settings: adaptable across occasions — adjust dose to match the energy level your situation calls for.

Terpene Breakdown

Primary: Myrcene · Secondary: Limonene · Tertiary: Pinene. Flavour translation from flower to vapour and smoke differs with this terpene combination. Low-temperature vaporisation (180-188°C) highlights the limonene and pinene notes whilst keeping myrcene as a foundation. Higher temperatures or combustion flatten the profile into a single-note experience — still pleasant, but lacking the complexity that makes this cultivar genuinely interesting to those who appreciate flavour.

Suitability and Recommendations

Opium suits growers with fundamental skills already established. You should understand pH management, basic nutrient ratios, and light cycle requirements before committing to this cultivar — it will not hold your hand, but it will not punish minor mistakes harshly either. Photoperiod genetics give you complete control over plant size and harvest timing — extend the vegetative phase for larger plants or flip early for a quicker turnaround in compact spaces. The New Zealand growing season (October through April) accommodates the 8-9 weeks bloom period comfortably for outdoor growers in the warmer northern regions. Shipped discreetly within New Zealand with sourced grow figures on every strain page.

Effects

🤗Euphoric
74% of people reported feeling Euphoric
🧘Calm
67% of people reported feeling Calm
😌Relaxed
58% of people reported feeling Relaxed
😊Happy
51% of people reported feeling Happy
🤩Creative
50% of people reported feeling Creative
😎Uplifted
38% of people reported feeling Uplifted
🤤Hungry
34% of people reported feeling Hungry
😴Sleepy
31% of people reported feeling Sleepy
😆Giggly
24% of people reported feeling Giggly

Best For

Anytime
Relaxation
Stress Relief

Strain Type

Indica 62%Sativa 38%

Strain Data Sheet

🧬THC21% - 24% (High)
🌿LineageWhite Widow × Durban Poison × Jack Herer
🔬TypeFeminised Hybrid
🌡ClimateTemperate, adaptable
📅HarvestSept – Nov, S. hemisphere (typical)
📏Height<100 cm
⚖️YieldMedium – High
🏠Yield Indoor400-450 g/m2
🌳Yield Outdoor1000 g/plant
Flowering Time8-9 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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Opium Feminised
royalkingseeds.co.nz
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Opium 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
Royal King Genetics Filial Programme — four-generation pheno fixing
Stabilisation Notes — What This Means for Your Grow

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.

Breeding Goal

Cull off-type phenos in Opium through filial selection.

Selection Focus

Chosen for trichome density, bud structure and the hybrid trait balance the cross was engineered for.

Pollen / Mother Source

Royal King Genetics in-house breeder room — pollen taken from a generation-tracked sibling-male line.

Last Batch QC Verified
25 May 2026· 95% germination guarantee