
Jack the Ripper Feminised
Jack the Ripper Feminised — premium sativa cannabis seeds suited to New Zealand growing conditions. 18% THC with creative, energetic, happy effects. Discreet delivery across New Zealand. sourced grow figuresd.
Royal King Genetics — first-party test batch
Figures below are from our internal seed-lot QC and verified New Zealand grower submissions, not breeder marketing. Determined from a single batch tested 2026-03-18 on 100 seeds.
About Jack the Ripper Feminised
Can I grow Jack the Ripper outdoors in New Zealand? Absolutely. This 25/75 sativa is well-suited to the New Zealand outdoor season running October through April. Expect taller plants that appreciate the long summer daylight hours — give it room to stretch and you will be rewarded with impressive cola development. Flowering takes 8-9 weeks, placing your harvest window squarely in March or April for most New Zealand latitudes.
What kind of yield should I realistically expect? We do not publish a per-strain yield figure for this cultivar, so treat any number you see elsewhere with caution. Yield depends far more on your lighting, pot size, feeding and training than on genetics alone. At 18% THC and a terpinolene-forward terpene profile, the quality-to-effort ratio makes Jack the Ripper genuinely worthwhile.
Is this strain forgiving for newer growers? Reasonably so. A grower with basic knowledge of pH, feeding schedules, and light cycles will manage fine. It is not the most forgiving plant if you neglect it entirely, but it will not collapse at the first missed watering either.
More Questions New Zealand Growers Ask About Jack the Ripper
What growing medium works best for this strain? For maximum flavour complexity, organic soil blended with 30% perlite and enriched with slow-release amendments (blood and bone, rock phosphate, kelp meal — all readily available at Bunnings or your local hydro shop). For maximum yield, coco coir with automated fertigation at EC 1.4-1.8 during bloom. Both approaches produce excellent results with this sativa genetics.
How does it handle a humid New Zealand autumn? Better than most. The open canopy structure allows heat to dissipate naturally. In extreme heat (38°C+), midday wilting may occur but recovery is swift once temperatures drop. Shade cloth at 30% reduces UV intensity without significantly impacting growth.
When should I start feeding bloom nutrients? Within the first week of visible pistil formation. This cultivar's 25/75 genetics shifts its nutritional demand rapidly at the transition. Phosphorus and potassium uptake increases noticeably, whilst nitrogen demand drops. An organic top-dress of bat guano and sulphate of potash works well for soil growers; hydro and coco growers should switch to a bloom-ratio formula (low N, high PK) immediately.
Indoor or outdoor — which is better for this strain? Both work. Indoor gives you control over the 8-9 weeks environment. Outdoor in the New Zealand growing season (October-April) lets the plant reach its full potential with natural sunlight intensity that even expensive LEDs struggle to match. Flowering: 8-9 weeks. Rated intermediate difficulty.
What to Expect When Using Jack the Ripper
New Zealand users report creative, energetic, happy as the defining characteristics, and our experience aligns with that consensus. At 18% THC, this sativa sits in a potency bracket where most users find a productive sweet spot. Vaporised at 175-185°C, the initial effect is a noticeable uplift in mood and mental energy that pairs well with creative projects, bushwalks, or social barbecues. The body remains light and mobile throughout, making this a genuine daytime option for those with THC tolerance. The Terpinolene/Limonene terpene combination imparts a flavour that lingers on the palate — complex and shifting, revealing new notes across the session.
Ideal settings: creative pursuits, social gatherings, outdoor adventures, and daytime leisure.
Terpene Breakdown
Primary: Terpinolene · Secondary: Limonene · Tertiary: Ocimene. This particular terpene trio appears frequently in award-winning cultivars and produces a nose that most growers find immediately appealing when jars are first opened after curing. The terpinolene dominance anchors the aroma, limonene provides mid-range character, and ocimene contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.
Suitability and Recommendations
Jack the Ripper suits growers with fundamental skills already established. You should understand pH management, basic nutrient ratios, and light cycle requirements before committing to this cultivar — it will not hold your hand, but it will not punish minor mistakes harshly either. Photoperiod genetics give you complete control over plant size and harvest timing — extend the vegetative phase for larger plants or flip early for a quicker turnaround in compact spaces. The New Zealand growing season (October through April) accommodates the 8-9 weeks bloom period comfortably for outdoor growers in the warmer northern regions. Shipped discreetly within New Zealand with sourced grow figures on every strain page.
Effects
Best For
Strain Type
Strain Data Sheet
Packaging
Feminised Premium
Seeds
authenticity
lining
number
Related Strains

Valley Ghash Feminised
Valley Ghash Feminised cannabis seeds for New Zealand growers. Hybrid strain · 19% THC · relaxed, happy, euphoric. Discreet packaging, nationwide delivery, sourced grow figures.

Alpha Blue Feminised
Grow Alpha Blue Feminised in New Zealand. Sativa genetics testing at 20% THC. Known for happy, energetic, creative effects. Ships discreetly nationwide with sourced grow figures.

Big Sticky Feminised
Big Sticky Feminised — premium sativa cannabis seeds suited to New Zealand growing conditions. 20% THC with happy, energetic, creative effects. Discreet delivery across New Zealand. sourced grow figuresd.

Blue Princess Feminised
Order Blue Princess Feminised seeds online. A quality sativa cultivar at 18% THC delivering happy, energetic, creative. Suited across the range of conditions found here. Fast shipping and guaranteed germination.
Jack the Ripper Feminised — Breeder Information
Royal King GeneticsBred 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.
Five generations of inbred selection on the original 1990s landrace-derived Jack the Ripper cuts. We were not chasing a redesign — we locked the finished-flower potency that earned this cultivar its reputation. Whatever the next pack throws is what the last pack threw.
Pin down the original 1990s landrace-derived terpene profile in modern seed form.
Chosen for terpene saturation, sativa vigour and a workable finish time despite long-flowering genetics.
Royal King Genetics in-house mother stock — pollen taken from a sibling male drawn from the same selected pheno population.