Opium cannabis seeds packaging — Royal King Seeds South Africa
Hybrid
THC 21%
📈 Big Harvest
HybridFeminisedIn Stock

Opium Feminised

Buy Opium Feminised seeds in South Africa. Hybrid · 21% THC · euphoric, calm. Every figure on this page is sourced, and every order ships unbranded.

Select Pack Size
R194.63ZAR
1
🇿🇦Free South Africa Delivery
🌱Germination Cover
🔒Nothing on the Box

Royal King Genetics — Seed-Lot Testing

Figures below come from our own seed-lot testing rather than breeder marketing, taken 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

Will Opium handle a South African summer outdoors? Yes. Put this 62/38 hybrid in the ground between September and November and you will be cutting from March to May. The balanced genetics take what the country gives them, from coastal humidity in KwaZulu-Natal through to dry Karoo heat. Bloom runs 8-9 weeks, placing harvest between March and May across most provinces.

What yield is realistic? 400-450 g/m2 indoors is reachable under decent LED with steady feeding. Outdoors, 1000 g/plant a plant is normal in 50 litre pots or straight into prepared ground in full sun. At 21% THC with myrcene in front, the return on effort is good.

How much can go wrong before it shows? Some. Anyone who understands pH, a feeding schedule and a light cycle will be fine. Neglect it entirely and it will suffer, but a single missed watering will not undo the grow.

Further Questions from South African Growers

Which medium suits it best? Depends what you are optimising for. Organic soil cut with 30% perlite and amended with bone meal, rock phosphate and kelp meal gives the fuller flavour, and all three are stocked by garden centres, agricultural co-ops and hydro shops countrywide. Coco under automated fertigation at EC 1.4-1.8 through bloom gives the bigger number. This hybrid genetics performs in either.

Does it cope with real summer heat? Well enough, on hybrid vigour. Keep the root zone under 28°C with mulch or pale pots, and do not transplant during a heatwave.

When do I switch to bloom feed? As soon as pistils show, not a fortnight later. The 62/38 genetics changes its demand sharply at the transition: phosphorus and potassium uptake rises while nitrogen demand falls away. Soil growers can top-dress with guano and sulphate of potash; coco and hydro growers should move to a low-N, high-PK formula immediately.

Indoors or outdoors? Indoors buys control over the 8-9 weeks environment. Outdoors, across a September-to-May season, gives you sunlight intensity no LED at any price reproduces, and the full 1000 g/plant. Difficulty: medium. In flower for 8-9 weeks. Stands <100 cm. Indoors it returns 400-450 g/m2. Outdoors, 1000 g/plant a plant.

What Opium Is Like to Use

The effects most commonly reported for this cultivar are euphoric, calm. At 21% THC it sits in a bracket where flexibility is the point. Lower doses read clear and functional in the morning, higher doses read relaxed in the evening. Because the 62/38 split is even, direction is set by how much you take rather than fixed by the genetics. The Myrcene/Limonene pairing leaves an earthy sweetness with a fruit finish on the palate.

Where it fits: most occasions, with the dose adjusted to whatever the situation asks for.

The Aromatic Three

Leading with Myrcene, then Limonene, and Pinene underneath. How this combination survives the move from flower to vapour or smoke is not a given. Held low, at 180-188°C, the limonene and pinene notes stay legible with myrcene underneath them. Run it hotter, or burn it, and the three collapse into one — still pleasant, but without the separation that makes this cultivar worth paying attention to.

Suitability and Recommendations

Opium is a reasonable fit for growers with the basics already in place. Understand pH, know roughly what nutrient ratios do, and be able to hold a light cycle — it will not carry you, but it does not punish the occasional slip either. Photoperiod genetics leave size and timing in your hands — hold it in veg for a bigger plant, or flip early when headroom is the constraint. A September-to-May outdoor season comfortably covers a 8-9 weeks bloom in the frost-free provinces. Posted discreetly anywhere in South Africa, with sourced grow figures shown on every strain page.

Effects

🤗Euphoric
🧘Calm

Reach For It When

Anytime
Relaxation
Stress Relief

Strain Type

Indica 62%Sativa 38%

At a Glance

🧬Potency21% - 24% (High)
🌿ParentsWhite Widow × Durban Poison × Jack Herer
🔬Seed TypeFeminised Hybrid
🌡SuitsMost of the country
📅Cut InMarch – May outdoors, planted Sept – Nov
📏Grows To<100 cm
⚖️Typical ReturnMedium – High
🏠Under Light400-450 g/m2
🌳In the Ground1000 g/plant
Weeks in Bloom8-9 weeks

In the Packet

Reseals +
RK
Royal King Seeds
Photoperiod
Feminised Premium
Seeds
Inside the Packet
Sealed vial
Reseals +
Royal King Seeds sells seed as an adult collectible and for the preservation of genetics. Knowing and following the law where they live.
1
Opium Feminised
royalkingseeds.co.za
IG
FB
X
🔒Factory-sealed
💧Water-resistant outer
🛡️Foil-lined inside
🏷️Tamper sticker
📱QR check
🔢Scratch-off serial

Related Strains

Jacked-Up cannabis seeds packaging — Royal King Seeds South Africa
23% THC
Hybrid
🎨 Heady

Jacked-Up Feminised

EuphoricEnergeticCalm
R262.39ZAR
Girl Scout Cookies cannabis seeds packaging — Royal King Seeds South Africa
20% THC
Hybrid
🔥 Well Known

Girl Scout Cookies Feminised

HappyEuphoricFocused
R228.51ZAR
Cali Jack cannabis seeds packaging — Royal King Seeds South Africa
24% THC
Hybrid
🎨 Heady

Cali Jack Feminised

EuphoricCreativeCalm
R262.39ZAR
White Lightning cannabis seeds packaging — Royal King Seeds South Africa
21% THC
Hybrid
🎨 Heady

White Lightning Feminised

CreativeEuphoricRelaxed
R211.57ZAR

Opium Feminised — Breeder Information

Royal King Genetics

Recreated and stabilised by Royal King Genetics , the breeding team behind this catalogue. Seed lots are germination-tested before they ship. More on the 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
29 May 2026· 95% germination guarantee