Yumboldt cannabis seeds packaging — Royal King Seeds New Zealand
Indica
THC 15%
🌙 Sleep Aid
IndicaFeminisedIn Stock

Yumboldt Feminised

Yumboldt Feminised — premium indica cannabis seeds suited to New Zealand growing conditions. 15% THC with relaxed, sleepy, happy effects. Discreet delivery across New Zealand. sourced grow figuresd.

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$19.79NZD
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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 2026-02-16 on 175 seeds.

Germination rate: 96.4% (n=175)
Last QC test date: 2026-02-16
Indoor yield: 423-586 g/m² (avg across 11 verified grower reports)
Outdoor yield: 495-758 g/plant (avg across 10 verified grower reports)

About Yumboldt Feminised

Can I grow Yumboldt outdoors in New Zealand? Absolutely. This 71/29 indica is well-suited to the New Zealand outdoor season running October through April. The compact growth habit means it will not tower above your fence line, and the dense flower structure packs serious weight into a manageable frame. Flowering takes 60 days, 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 We do not publish a per-strain yield figure for this cultivar, so treat any number you see elsewhere with caution.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 15% THC and a myrcene-forward terpene profile, the quality-to-effort ratio makes Yumboldt 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 Yumboldt

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 indica genetics.

How does it handle a humid New Zealand autumn? The dense foliage provides natural self-shading, which helps. Above 35°C, growth slows noticeably but the plant does not collapse. Mulching the root zone and watering in the early morning (before 7am) prevents heat stress in most parts of the country.

When should I start feeding bloom nutrients? Within the first week of visible pistil formation. This cultivar's 71/29 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 60 days 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: 60 days. Indoor yield: 350 g/m2. Plant height: 1 m. Rated intermediate difficulty.

What to Expect When Using Yumboldt

New Zealand users report relaxed, sleepy, happy as the defining characteristics, and our experience aligns with that consensus. At 15% THC, this indica sits in a potency bracket where dosage control genuinely matters. A single bowl in a vaporiser at 185°C produces a manageable, pleasant body relaxation with intact mental function — perfect for winding down after a long day in the summer sun. Increasing the dose shifts the experience firmly towards physical sedation, and many users find this their preferred nighttime cultivar during the cooler months. The Myrcene/Humulene terpene combination imparts a flavour that lingers on the palate — earthy and slightly sweet with a fruit-like finish.

Ideal settings: quiet evenings, film nights, post-exercise recovery, and sleep preparation.

Terpene Breakdown

Primary: Myrcene · Secondary: Humulene · Tertiary: Linalool. Together these three compounds construct an aromatic signature that evolves throughout the curing process. Freshly dried flower leads with myrcene presence, but after three to four weeks in sealed glass jars at 16-18°C, the linalool undertone strengthens and the overall bouquet develops a layered complexity. Vaporisation between 180°C and 195°C captures the broadest spectrum of these terpenes — higher temperatures degrade the more volatile linalool molecules first.

Suitability and Recommendations

Yumboldt 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 60 days 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

😌Relaxed
72% of people reported feeling Relaxed
😴Sleepy
72% of people reported feeling Sleepy
😊Happy
58% of people reported feeling Happy
🤤Hungry
54% of people reported feeling Hungry
🤗Euphoric
47% of people reported feeling Euphoric
🧘Calm
40% of people reported feeling Calm
🌿Stress Relief
27% of people reported feeling Stress Relief
💆Body High
24% of people reported feeling Body High
😶‍🌫️Sedated
21% of people reported feeling Sedated

Best For

Evening
Relaxation
Sleep Support

Strain Type

Indica 71%Sativa 29%

Strain Data Sheet

🧬THC15% - 20% (Medium-High)
🌿LineageIndica-Dominant Hybrid (Undisclosed Lineage)
🔬TypeFeminised Indica
🌡ClimateCool–temperate / continental
📅HarvestSept – Nov, S. hemisphere (typical)
📏Height1 m
⚖️YieldMedium
🏠Yield Indoor350 g/m2
🌳Yield Outdoor400 – 600 g/plant (typical)
Flowering Time60 days

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
Yumboldt Feminised
royalkingseeds.co.nz
IG
FB
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Yumboldt 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
BX2
Generations
3+
Breeding Programme
Royal King Genetics Backcross Line — BX2 modern hybrid stabilisation
Stabilisation Notes — What This Means for Your Grow

Two backcross generations to the recurrent parent have welded Yumboldt into a stable seed line. The cross-derived bud-to-leaf ratio expresses uniformly — no surprise-pheno hunting once the pack pops.

Breeding Goal

Carry a clone-derived recent-era hybrid through to a stable seed pack.

Selection Focus

Chosen for resin output, a low-slung stature and a clean indica terpene fingerprint.

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
4 August 2025· 95% germination guarantee