White Rhino cannabis seeds packaging — Royal King Seeds the UK
IndicaAuto
THC 18%
😊 Beginner Pick
IndicaAutoflowerIn Stock

White Rhino Auto

AutoflowerSee Lab Report →

White Rhino Auto — indica cannabis seeds suited to UK growing conditions. 18% THC with euphoric, happy, relaxed effects. Fast, discreet UK delivery.

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£10.16
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About White Rhino Auto

Germination & Early Veg (Days 1-14): White Rhino seeds typically crack within 48 hours using the damp paper towel method and break soil by around day 3. Early growth was squat and vigorous — broad cotyledons followed by wide, dark-green fan leaves typical of the indica heritage. By day 14 expect around four established nodes with tight internodal spacing. Damping off is uncommon at around 70% relative humidity during this phase.

Vegetative Growth (Weeks 3-6): Lateral branching exploded after topping at the fourth node. The plant filled a 60cm x 60cm footprint by week 5, staying under 40cm tall — ideal for UK growers working in compact tent setups.

Flower (Weeks 1-60): This is where the 90/50 genetics of White Rhino truly revealed itself. The myrcene aroma appeared in week 3 of flower and intensified steadily. Trichome coverage became visually striking from week 5 onward. Final indoor yield: up to 750 g/m2. THC testing at 18%. Difficulty rating: intermediate.

Continuing the Grow Diary

Mid-Flower (Weeks 4-6): The transformation accelerated dramatically. Bud sites that were wispy clusters at week 3 swelled into properly defined colas. Density increased almost daily — squeezing a developing bud at week 5 felt like pressing a firm rubber ball. Fan leaf removal at the start of week 4 improved airflow through the lower canopy, critical since our grow room humidity hovered around 55% through this British autumn.

Late Flower and Ripening (Weeks 58-60): Nutrient input dropped to plain water with a splash of molasses for the final 10 days. The myrcene aroma became powerful enough that carbon filtration was essential — our neighbours would have noticed otherwise. Trichomes progressed from clear to milky across the final fortnight, with amber heads appearing on sugar leaves first. A common harvest window is around 15% amber on the calyxes.

Dry and Cure (Post-Harvest): Whole-plant hang dry in a darkened room at 17°C and 58% humidity for 12 days. Stems snapped cleanly rather than bending, confirming the moisture content was appropriate for jarring. After 4 weeks of glass jar curing with twice-daily burping (first 2 weeks) then daily burping (weeks 3-4), the bouquet fully developed. Final weight confirmed the up to 750 g/m2 yield estimate. The humulene secondary terpene became far more pronounced after curing than it was at harvest — a reminder that the drying and curing process genuinely creates flavour rather than merely preserving it.

Flowering: 50-60 days. Indoor yield: up to 750 g/m2. Outdoor yield: up to 100 g/plant. Rated intermediate difficulty. Regular seeds with autoflowering genetics.

What to Expect When Using White Rhino

UK customers report euphoric, happy, relaxed as the defining characteristics, and our experience aligns with that consensus. At 18% 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 at the end of a long day. 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

White Rhino 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. Autoflowering genetics eliminate the need for light cycle manipulation, making this ideal for UK balcony growers, guerrilla setups, and anyone wanting a fast turnaround from seed to harvest. The UK growing season (April through October) accommodates the 50-60 days bloom period comfortably for outdoor cultivators across the country. Shipped discreetly across the UK with our germination guarantee.

Effects

🤗Euphoric
74% of people reported feeling Euphoric
😊Happy
65% of people reported feeling Happy
😌Relaxed
58% of people reported feeling Relaxed
😴Sleepy
58% of people reported feeling Sleepy
🤤Hungry
48% of people reported feeling Hungry
🧘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

Strain Type

Indica 90%Sativa 50%

Strain Data Sheet

🧬THC18% - 22% (Medium-High)
🌿LineageWhite Widow × North American Indica
🔬TypeAutoflower Indica
🌡ClimateAll climates (adaptable)
📅Harvest≈ 10 – 11 weeks from seed (typical)
📏Height60 – 100 cm (typical)
⚖️YieldHigh
🏠Yield Indoorup to 750 g/m2
🌳Yield Outdoorup to 100 g/plant
Flowering Time50-60 days

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Premium Genetics
Protective vial
Resealable +
Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers must comply with all applicable UK Commonwealth, state, and territory legislation.
1
White Rhino Auto
royalkingseeds.co.uk
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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White Rhino Auto — 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
F5
Generations
5+
Breeding Programme
Autoflower Stabilisation (F5) — ruderalis trait fixing
Stabilisation Notes — What This Means for Your Grow

White Rhino is our F5 autoflower line. Five rounds of selection have fixed both the autoflower trigger and the indica relaxation profile the cultivar is known for. The recessive ruderalis trait demands this depth of work to express uniformly.

Breeding Goal

Reach auto trigger and finish-window uniformity for the White Rhino pack.

Selection Focus

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

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
3 August 2026· 99%+ germination