501st OG cannabis seeds packaging — Royal King Seeds South Africa
Indica
THC 18%
🌙 Night-Time
IndicaFeminisedIn Stock

501st OG Feminised

501st OG Feminised for South African growers — indica genetics at 18% THC, reported as relaxed, sleepy, happy. Sourced grow figures on the page, plain packaging, delivered nationwide.

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R203.10ZAR
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 2026-04-17 on 325 seeds.

Germination rate: 97.4% (n=325)
Last QC test date: 2026-04-17
Indoor yield: 487-660 g/m² (avg across 11 verified grower reports)
Outdoor yield: 639-902 g/plant (avg across 10 verified grower reports)

About 501st OG Feminised

Will 501st OG handle a South African summer outdoors? Yes. Put this 74/26 indica in the ground between September and November and you will be cutting from March to May. It stays low enough not to clear a boundary wall, and the short frame carries more weight than its size suggests. Bloom runs 7-9 weeks, placing harvest between March and May across most provinces.

What yield is realistic? 885 g/m² indoors is reachable under decent LED with steady feeding. Outdoors, Up to 400 gr a plant is normal in 50 litre pots or straight into prepared ground in full sun. At 18% THC with linalool 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 indica genetics performs in either.

Does it cope with real summer heat? Reasonably. The dense foliage shades itself, so a spell above 28°C slows growth without stalling it. Mulch the root zone and water before 7am and heat stress stays manageable through most of the country.

When do I switch to bloom feed? As soon as pistils show, not a fortnight later. The 74/26 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 7-9 weeks environment. Outdoors, across a September-to-May season, gives you sunlight intensity no LED at any price reproduces, and the full Up to 400 gr. Difficulty: easy. In flower for 7-9 weeks. Stands Short. Indoors it returns 885 g/m². Outdoors, Up to 400 gr a plant.

What 501st OG Is Like to Use

The effects most commonly reported for this cultivar are relaxed, sleepy, happy. At 18% THC it sits in a bracket where the dose does most of the work. A single bowl vaporised at 185°C gives a manageable body relaxation with your head still intact — enough to close out a long day in the summer heat. Push the dose and it moves decisively toward physical sedation, which is how it tends to end up as a winter evening cultivar. The Linalool/Myrcene pairing leaves a shifting profile that keeps turning up new notes on the palate.

Where it fits: quiet evenings, a film, recovery after exercise, and the hours before sleep.

The Aromatic Three

Leading with Linalool, then Myrcene, and Caryophyllene underneath. Read across a cure, these three compounds do not stay in the same order. Fresh off the dry, linalool leads. After three or four weeks in sealed glass at 16-18°C the caryophyllene 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 caryophyllene molecules are the first thing you lose.

Suitability and Recommendations

501st OG 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 7-9 weeks bloom in the frost-free provinces. Posted discreetly anywhere in South Africa, with sourced grow figures shown on every strain page.

Effects

😌Relaxed
😴Sleepy
😊Happy

Reach For It When

Evening
Relaxation
Sleep Support

Strain Type

Indica 74%Sativa 26%

At a Glance

🧬Potency18% - 22% (Medium-High)
🌿ParentsSkywalker OG × Rare Dankness #1
🔬Seed TypeFeminised Indica
🌡SuitsHighveld and the drier interior
📅Cut InMarch – May outdoors, planted Sept – Nov
📏Grows ToShort
⚖️Typical ReturnHigh
🏠Under Light885 g/m²
🌳In the GroundUp to 400 gr
Weeks in Bloom7-9 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
501st OG 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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501st OG 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
BX3
Generations
4+
Breeding Programme
Backcross Stabilisation (BX3) — clone-to-seed restoration
Stabilisation Notes — What This Means for Your Grow

501st OG has been the target of countless seed-bank backcross programmes. Ours is BX3 — three rounds of crossing the elite cut back to the parental line until trait expression evened out. The pack grows true to the mother cut.

Breeding Goal

Recreate the 501st OG clone-only cut in stable seed form.

Selection Focus

Chosen for trichome coverage, stout structure and consistent flowering time across the pack.

Pollen / Mother Source

Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.

Last Batch QC Verified
6 July 2026· 95% germination guarantee