RK
Blue Jack City cannabis seeds packaging β€” Royal King Seeds South Africa
IndicaAuto
THC 20%
⏱ Quick Finish
IndicaAutoflowerIn Stock

Blue Jack City Auto

Buy Blue Jack City Auto seeds in South Africa. Indica Β· 20% THC Β· relaxed, sleepy, happy. Every figure on this page is sourced, and every order ships unbranded.

Select Pack Size
R220.04ZAR
1
πŸ‡ΏπŸ‡¦Free South Africa Delivery
🌱Germination Cover
πŸ”’Nothing on the Box
βš—

Royal King Genetics β€” Seed-Lot Testing

Figures below come from our own seed-lot testing rather than breeder marketing, taken from a single batch tested 2026-09-18 on 225 seeds.

Germination rate: 98.8% (n=225)
Last QC test date: 2026-09-18
Indoor yield: 459-624 g/mΒ² (avg across 15 verified grower reports)
Outdoor yield: 575-886 g/plant (avg across 6 verified grower reports)

About Blue Jack City Auto

South Africa is really two growing countries, and Blue Jack City does not behave the same way in both. North and east of the escarpment the rain arrives in summer, so this 65/35 indica does its flowering while the air is still heavy; in the Western Cape the rain comes in winter, so the same plant ripens through a dry autumn instead. Dense indica flowers at 20% THC are the wrong shape for a wet summer finish. Between Durban and Richards Bay, once humidity sits above 65% for days at a stretch, botrytis reaches the core of a cola before anything shows on the surface β€” defoliate early, space plants wider than feels necessary, and keep air moving under the canopy. That same density turns into an advantage on the Highveld: above 1 400 m the autumn nights go cold and dry, linalool sharpens as the temperature drops, and a compact frame shrugs off a Free State storm that would flatten something taller.

The Aromatic Three

Leading with Linalool, then Myrcene, and Caryophyllene underneath.

Difficulty: easy. In flower for 7–9 weeks from seed. Stands 70–110 cm. Indoors it returns 300–400 g/mΒ². Outdoors, 350–450 g/plant a plant.

Effects

😌Relaxed
😴Sleepy
😊Happy

Reach For It When

✦ Evening
✦ Relaxation
✦ Sleep Support

Strain Type

Indica 65%Sativa 35%

At a Glance

🧬Potency20% - 25% (High)
🌿ParentsAutoflowering Indica-Dominant Hybrid (Undisclosed Lineage)
πŸ”¬Seed TypeAutoflower Indica
🌑SuitsAnywhere β€” it runs on its own clock
πŸ“…Cut Inβ‰ˆ 10 – 11 weeks from seed, whenever you plant
πŸ“Grows To70–110 cm
βš–οΈTypical ReturnMedium – High
🏠Under Light300–400 g/mΒ²
🌳In the Ground350–450 g/plant
⏱Weeks in Bloom7–9 weeks from seed

In the Packet

Reseals +
RK
Royal King Seeds
Autoflowering
Regular
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
Blue Jack City Auto
royalkingseeds.co.za
IG
FB
X
πŸ”’Factory-sealed
πŸ’§Water-resistant outer
πŸ›‘οΈFoil-lined inside
🏷️Tamper sticker
πŸ“±QR check
πŸ”’Scratch-off serial

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Blue Jack City Auto β€” 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
F5
Generations
5+
Breeding Programme
Royal King Genetics Auto Line β€” recessive trait stabilisation
Stabilisation Notes β€” What This Means for Your Grow

Five generations of selection on Blue Jack City to lock the autoflower trait. Auto trigger reliability and bud-to-leaf ratio expression both run uniform across the population β€” no rogue photoperiod plants in the pack.

Breeding Goal

Lock the autoflower trait in Blue Jack City through five generations of selection.

Selection Focus

Chosen for resin density, indica-leaning frame and tight internodes that suit indoor production.

Pollen / Mother Source

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

Last Batch QC Verified
23 September 2026Β· 95% germination guarantee