Cali Jack cannabis seeds packaging — Royal King Seeds Ireland
Hybrid
THC 24%
🎨 Creative
HybridFeminisedIn Stock

Cali Jack Feminised

Grow Cali Jack Feminised in Ireland. Hybrid genetics testing at 24% THC. Known for euphoric, creative, calm effects. Ships discreetly nationwide with sourced grow figures.

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Royal King Genetics — first-party test batch

Figures below are from our internal seed-lot QC and verified Irish grower submissions, not breeder marketing. Determined from a single batch tested 2026-09-10 on 300 seeds at 21-24°C.

Germination rate: 98.9% (n=300)
Last QC test date: 2026-09-10
Indoor yield: 459-596 g/m² (avg across 11 verified grower reports)
Outdoor yield, Ireland: 501-724 g/plant (avg across 10 verified grower reports)

About Cali Jack Feminised

Does Cali Jack finish outdoors in Ireland? It does, planted out at the end of May and cut by early October. The 36/64 balance handles an Irish season without special treatment, which is most of the reason to choose it. Bloom takes 9-11 weeks, so the harvest date is set by the calendar far more than by your technique.

What should I expect to take off it? 400-600 g/m2 indoors and 425-567 g/plant (~ 550 g/plant) outdoors are the published figures, and both assume a full light or a full season plus a root run to match. A tunnel gets you most of the way to the outdoor number; a windowsill will not. At 24% THC the effort is well spent either way.

Is it a sensible first grow? Reasonably. Anyone who has finished one grow will manage this one; it asks for consistency rather than expertise.

Other questions that come up about Cali Jack

Soil or coco? Coco with fertigation at EC 1.4-1.8 through bloom if you are there daily and want speed. Peat-free soil with slow amendments — fish, blood and bone, seaweed meal, rock phosphate — if you are not, and want flavour. Both suit this hybrid; the deciding factor is your week, not the plant.

How does it handle the weather here? Hybrid vigour covers most of what an Irish summer does. Keep the root zone under 28°C and do not transplant into a warm spell.

When does bloom feed start? Within a week of the first pistils. The 36/64 balance shifts demand quickly at the transition — phosphorus and potassium up, nitrogen down. Soil growers top-dress; coco and hydro switch formula immediately.

Tunnel, outdoors or indoors? A tunnel is the best value of the three here. Indoors you own the 9-11 weeks of bloom completely; outdoors the plant gets light no lamp matches and can reach 425-567 g/plant (~ 550 g/plant), and pays for it in rain. Flowering: 9-11 weeks. Indoor yield: 400-600 g/m2. Outdoor yield: 425-567 g/plant (~ 550 g/plant). Plant height: Medium (150-245 cm). Rated moderate difficulty.

Flavour, aroma and effect

Cali Jack arrives in order. The first draw at 24% THC gives citrus with a bitter edge that lifts off the palate. The euphoric, creative, calm character follows in minutes, as head and body together. Thinking stays clear while the muscles let go by degrees, which is what makes the dose, rather than the genetics, the thing that decides the evening. Caryophyllene underneath contributes warmth that keeps it anchored.

Terpene breakdown

Primary: Limonene · Secondary: Caryophyllene · Tertiary: Linalool. Temperature decides how much of this profile survives. Low vaporisation at 180-188°C keeps caryophyllene and linalool audible over the limonene; run it hotter, or burn it, and all three collapse into one note that is pleasant enough and tells you nothing.

Who it suits

Who does well with Cali Jack? Indoor growers who want to choose their own timeline. Tunnel growers who want to decide when flowering starts rather than letting August decide it. Anyone with the space to veg it properly first. Rated moderate, which means a moderate learning curve that rewards attention without needing specialist kit.

Effects

🤗Euphoric
74% of people reported feeling Euphoric
🤩Creative
70% of people reported feeling Creative
🧘Calm
60% of people reported feeling Calm
😌Relaxed
51% of people reported feeling Relaxed
😊Happy
45% of people reported feeling Happy
😎Uplifted
38% of people reported feeling Uplifted
🤤Hungry
34% of people reported feeling Hungry
😴Sleepy
31% of people reported feeling Sleepy
😆Giggly
24% of people reported feeling Giggly

Best For

✦ Anytime
✦ Relaxation
✦ Stress Relief

Strain Type

Indica 36%Sativa 64%

Strain Data Sheet

🧬THC24% - 28% (High)
🌿LineageJack Herer × Pre-98 Bubba Kush
🔬TypeFeminised Hybrid
🌡ClimateTemperate, adaptable
📅HarvestSept – Nov, S. hemisphere (typical)
📏HeightMedium (150-245 cm)
⚖️YieldHigh
🏠Yield Indoor400-600 g/m2
🌳Yield Outdoor425-567 g/plant (~ 550 g/plant)
⏱Flowering Time9-11 weeks

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminised Premium
Seeds
Premium Genetics
Protective vial
Resealable +
Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers are responsible for complying with the law where they live.
1
Cali Jack Feminised
royalkingseeds.ie
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Cali Jack Feminised — Breeder Information

Royal King Genetics

Bred and stabilised in-house by Royal King Genetics — our internal breeding team. Every batch is QC'd and germ-tested above 99% before it ships. Read the full breeding process and about page.

Stabilisation Level
F4
Generations
4+
Breeding Programme
F4 Production Line — modern cross stabilisation
Stabilisation Notes — What This Means for Your Grow

A mid-2010s cross stabilised over four generations of selection. Cali Jack grows true-to-type with the bud density that defines the cultivar.

Breeding Goal

Cull off-type phenos in Cali Jack through filial selection.

Selection Focus

Chosen for vigour, terpene saturation and a tight finish window that allows production planning.

Pollen / Mother Source

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

Last Batch QC Verified
11 September 2026· 99%+ germination