J1 cannabis seeds packaging — Royal King Seeds South Africa
Hybrid
THC 23%
🎨 Heady
HybridFeminisedIn Stock

J1 Feminised

A hybrid testing at 23% THC, J1 Feminised is reported creative, happy, uplifted. Grown right across the country, from the Cape to the Lowveld. Discreet nationwide delivery and a germination guarantee.

Select Pack Size
R262.39ZAR
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 2026-04-12 on 175 seeds.

Germination rate: 97.5% (n=175)
Last QC test date: 2026-04-12
Indoor yield: 428-594 g/m² (avg across 12 verified grower reports)
Outdoor yield: 518-858 g/plant (avg across 3 verified grower reports)

About J1 Feminised

Will J1 handle a South African summer outdoors? Yes. Put this 40/60 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 55-65 days, placing harvest between March and May across most provinces.

What yield is realistic? up to 450 g/m2 indoors is reachable under decent LED with steady feeding. Outdoors, up to 600 g/plant a plant is normal in 50 litre pots or straight into prepared ground in full sun. At 23% THC with caryophyllene 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 40/60 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 55-65 days environment. Outdoors, across a September-to-May season, gives you sunlight intensity no LED at any price reproduces, and the full up to 600 g/plant. Difficulty: intermediate. In flower for 55-65 days. Stands Medium. Indoors it returns up to 450 g/m2. Outdoors, up to 600 g/plant a plant.

Aroma, Flavour and Effect

The first thing J1 does at 23% THC is settle a warm peppery spice at the back of the throat. The creative, happy, uplifted effects follow within minutes, across head and body at once. Thinking stays clear while muscle tension drains off, which leaves the dose as the deciding factor — light for the afternoon, heavier and it moves into the evening without a jolt. Limonene sits underneath all of it, adding a brightness that offsets any heaviness.

The Aromatic Three

Leading with Caryophyllene, then Limonene, and Myrcene underneath. Read across a cure, these three compounds do not stay in the same order. Fresh off the dry, caryophyllene leads. After three or four weeks in sealed glass at 16-18°C the myrcene undertone comes up and the bouquet gains a layer it did not have at harvest. Vaporising between 180°C and 195°C captures the widest span of them — run it hotter and the volatile myrcene molecules are the first thing you lose.

Suitability and Recommendations

Who does well with J1? Indoor growers who want the harvest date to be their decision. Outdoor growers who want to choose the moment flowering starts. Anyone with the room and the patience to veg it properly before flipping. It is rated intermediate, which in practice means a moderate learning curve that rewards attention without needing laboratory conditions. Sent nationwide in plain, unbranded packaging, with sourced grow data on every strain page.

Effects

🤩Creative
😊Happy
😎Uplifted

Reach For It When

Anytime
Depression
Fatigue
Stress

Strain Type

Indica 40%Sativa 60%

At a Glance

🧬Potency23% - 28% (High)
🌿ParentsJack Herer × Skunk #1
🔬Seed TypeFeminised Hybrid
🌡SuitsMost of the country
📅Cut InMarch – May outdoors, planted Sept – Nov
📏Grows ToMedium
⚖️Typical ReturnMedium – High
🏠Under Lightup to 450 g/m2
🌳In the Groundup to 600 g/plant
Weeks in Bloom55-65 days

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
J1 Feminised
royalkingseeds.co.za
IG
FB
X
🔒Factory-sealed
💧Water-resistant outer
🛡️Foil-lined inside
🏷️Tamper sticker
📱QR check
🔢Scratch-off serial

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J1 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
Filial Stabilisation (F4) — four-generation selection
Stabilisation Notes — What This Means for Your Grow

Four rounds of filial stabilisation on the J1 cross. The trichome production expression sits uniform; pheno-to-pheno yield variation runs within ±10% of the published numbers.

Breeding Goal

Pin trichome production consistency across the J1 population.

Selection Focus

Chosen for balanced indica/sativa expression, terpene fidelity and pack-to-pack uniformity.

Pollen / Mother Source

Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.

Last Batch QC Verified
30 April 2026· 95% germination guarantee