Jack Frost cannabis seeds packaging — Royal King Seeds South Africa
Hybrid
THC 22%
🎨 Heady
HybridFeminisedIn Stock

Jack Frost Feminised

Jack Frost Feminised for South African growers — hybrid genetics at 22% THC, reported as creative, happy, uplifted. Sourced grow figures on the page, plain packaging, delivered nationwide.

Select Pack Size
R236.98ZAR
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 2026-04-01 on 175 seeds.

Germination rate: 99.3% (n=175)
Last QC test date: 2026-04-01
Indoor yield: 475-652 g/m² (avg across 11 verified grower reports)
Outdoor yield: 549-844 g/plant (avg across 10 verified grower reports)

About Jack Frost Feminised

Will Jack Frost handle a South African summer outdoors? Yes. Put this 50/50 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 350 g/m2 indoors is reachable under decent LED with steady feeding. Outdoors, up to 450 g/plant a plant is normal in 50 litre pots or straight into prepared ground in full sun. At 22% 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 50/50 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 450 g/plant. Difficulty: easy. In flower for 55-65 days. Stands Short. Indoors it returns up to 350 g/m2. Outdoors, up to 450 g/plant a plant.

What Jack Frost Is Like to Use

The effects most commonly reported for this cultivar are creative, happy, uplifted. At 22% 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 50/50 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. Read across a cure, these three compounds do not stay in the same order. Fresh off the dry, myrcene leads. After three or four weeks in sealed glass at 16-18°C the pinene 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 pinene molecules are the first thing you lose.

Suitability and Recommendations

Jack Frost 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 55-65 days bloom in the frost-free provinces. Posted discreetly anywhere in South Africa, with sourced grow figures shown on every strain page.

Effects

🤩Creative
😊Happy
😎Uplifted

Reach For It When

Anytime
Depression
Pain
Stress

Strain Type

Indica 50%Sativa 50%

At a Glance

🧬Potency22% - 27% (High)
🌿ParentsBalanced Hybrid (Undisclosed Lineage)
🔬Seed TypeFeminised Hybrid
🌡SuitsMost of the country
📅Cut InMarch – May outdoors, planted Sept – Nov
📏Grows ToShort
⚖️Typical ReturnMedium
🏠Under Lightup to 350 g/m2
🌳In the Groundup to 450 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
Jack Frost Feminised
royalkingseeds.co.za
IG
FB
X
🔒Factory-sealed
💧Water-resistant outer
🛡️Foil-lined inside
🏷️Tamper sticker
📱QR check
🔢Scratch-off serial

Related Strains

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

J1 Feminised

CreativeHappyUplifted
R262.39ZAR
Atomic Northern Lights cannabis seeds packaging — Royal King Seeds South Africa
22% THC
Hybrid
🎨 Heady

Atomic Northern Lights Feminised

HappyRelaxedUplifted
R245.45ZAR
Baked Alaska cannabis seeds packaging — Royal King Seeds South Africa
25% THC
Hybrid
Strong

Baked Alaska Feminised

HappyCreativeCalm
R245.45ZAR
THC Bomb cannabis seeds packaging — Royal King Seeds South Africa
22% THC
Hybrid
🎨 Heady

THC Bomb Feminised

CreativeHappyRelaxed
R169.22ZAR

Jack Frost 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

Jack Frost runs through our F4 programme. Four cycles of phenotype selection have removed the worst of the trait variation; what is left is a tight, predictable population for production.

Breeding Goal

Carry Jack Frost from F1 cross to F4 production-ready seed stock.

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 mother stock — pollen taken from a sibling male drawn from the same selected pheno population.

Last Batch QC Verified
16 June 2026· 95% germination guarantee