Arctic Sun cannabis seeds packaging — Royal King Seeds the UK
Sativa
THC 22%
🎨 Creative
SativaFeminizedIn Stock

Arctic Sun Feminized

Feminized PhotoperiodSee Lab Report →

Arctic Sun Feminized cannabis seeds for UK growers. Sativa · 22% THC · energetic, calm. Discreet UK delivery, priced in GBP.

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About Arctic Sun Feminized

Can I grow Arctic Sun outdoors in the UK? Absolutely. This 24/76 sativa is well-suited to the UK outdoor season running April through October. 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 ±66 days, placing your harvest window squarely in September or October for most UK 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 We do not publish a per-strain yield figure for this cultivar, so treat any number you see elsewhere with caution.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 22% THC and a limonene-forward terpene profile, the quality-to-effort ratio makes Arctic Sun 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 UK Growers Ask About Arctic Sun

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, fish and bone, rock phosphate, kelp meal — all readily available at a garden centre or your local hydroponics 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 British summer heat? Better than most. The open canopy structure allows heat to dissipate naturally. In a rare UK heatwave (32°C+), midday wilting may occur but recovery is swift once temperatures drop. Shade netting at 30% reduces intensity without significantly impacting growth.

When should I start feeding bloom nutrients? Within the first week of visible pistil formation. This cultivar's 24/76 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 ±66 days environment. Outdoor in the UK growing season (April-October) lets the plant reach its full potential with natural sunlight intensity that even expensive LEDs struggle to match. Flowering: ±66 days. Rated intermediate difficulty.

Flavour, Aroma, and Experience

The sensory arc of Arctic Sun unfolds in stages. Initial inhalation at 22% THC brings a bright, almost sparkling citrus note that lifts the palate. The energetic, calm effects emerge within minutes, arriving as a noticeable sharpening of sensory perception. Colours look more saturated, music sounds richer, and conversations take interesting tangential paths. This cerebral engagement sustains for 2-3 hours with a gentle plateau rather than a sudden peak and crash. The pinene secondary terpene adds a distinct layer: a mental alertness that keeps cognition crisp.

Terpene Breakdown

Primary: Limonene · Secondary: Pinene · Tertiary: Terpinolene. This particular terpene trio appears frequently in award-winning cultivars and produces a nose that most UK growers find immediately appealing when jars are first opened after curing. The limonene dominance anchors the aroma, pinene provides mid-range character, and terpinolene contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.

Suitability and Recommendations

Who grows Arctic Sun successfully? Indoor growers seeking full control over their harvest timeline. Outdoor cultivators who want to decide exactly when flowering begins. Anyone with the space and patience to vegetate this plant to its full potential before triggering bloom. Difficulty is rated intermediate, meaning a moderate learning curve that rewards attention without demanding laboratory-grade conditions. Delivered UK-wide in discreet, unbranded packaging with germination guarantee included.

Effects

🤑Energetic
71% of people reported feeling Energetic
🧘Calm
67% of people reported feeling Calm
😊Happy
58% of people reported feeling Happy
🤩Creative
56% of people reported feeling Creative
😎Uplifted
45% of people reported feeling Uplifted
🤗Euphoric
40% of people reported feeling Euphoric
🧠Focused
35% of people reported feeling Focused
🗣️Talkative
23% of people reported feeling Talkative
💪Motivated
24% of people reported feeling Motivated

Strain Type

Indica 24%Sativa 76%

Strain Data Sheet

🧬THC22% - 26% (High)
🌿LineageWhite Widow × Skunk #1
🔬TypeFeminized Sativa
🌡ClimateWarm / Mediterranean, long season
📅HarvestLate Sept – Oct, UK outdoor (typical)
📏Height120 – 200 cm (typical)
⚖️YieldMedium – High
🏠Yield Indoor400 – 500 g/m² (typical)
🌳Yield Outdoor400 – 600 g/plant (typical)
Flowering Time±66 days

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminized Premium
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.
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Arctic Sun Feminized
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💧Waterproof coating
🛡️Aluminium interior lining
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Arctic Sun Feminized — 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
Royal King Genetics Filial Programme — four-generation pheno fixing
Stabilisation Notes — What This Means for Your Grow

Arctic Sun runs through our F4 programme. Four cycles of phenotype selection have removed the worst of the trait variation; what is left is a tight, predictable population for production.

Breeding Goal

Pin high-energy terpene expression consistency across the Arctic Sun population.

Selection Focus

Chosen for trichome density, sativa branching architecture and an energising terpene expression.

Pollen / Mother Source

Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.

Last Batch QC Verified
18 July 2025· 99%+ germination