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Alpine Blue cannabis seeds packaging β€” Royal King Seeds the UK
Hybrid
THC 17%
πŸ˜„ Mood Boost
HybridFeminizedIn Stock

Alpine Blue Feminized

Feminized PhotoperiodSee Lab Report β†’

Alpine Blue Feminized seeds. A hybrid cultivar at 17% THC delivering relaxed, happy, euphoric. Grow figures from named sources.

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Β£12.20
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About Alpine Blue Feminized

Can I grow Alpine Blue outdoors in the UK? Absolutely. This 49/51 hybrid is well-suited to the UK outdoor season running April through October. The balanced genetics handle UK conditions reliably, adapting to everything from damp coastal air to the drier east of the country. Flowering takes 55-65 days, placing your harvest window squarely in September or October for most UK latitudes.

What kind of yield should I realistically expect? Indoor growers pulling up to 350 g/m2 is achievable with decent LED lighting and attentive feeding. Outdoors, up to 350 g/plant per plant is realistic in 50+ litre pots or directly in prepared garden soil with full sun exposure. At 17% THC and a caryophyllene-forward terpene profile, the quality-to-effort ratio makes Alpine Blue 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 Alpine Blue

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 β€” 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 hybrid genetics.

How does it handle British summer heat? Handles heat reasonably well thanks to the hybrid vigour. Keep root zone temperatures below 28Β°C with mulch or light-coloured pots, and avoid transplanting during heatwave conditions.

When should I start feeding bloom nutrients? Within the first week of visible pistil formation. This cultivar's 49/51 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 β€” which is better for this strain? Both work. Indoor gives you control over the 55-65 days environment. Outdoor in the UK growing season (April-October) lets the plant reach its full up to 350 g/plant potential with natural sunlight intensity that even expensive LEDs struggle to match. Flowering: 55-65 days. Indoor yield: up to 350 g/m2. Outdoor yield: up to 350 g/plant. Rated intermediate difficulty.

What to Expect When Using Alpine Blue

UK customers report relaxed, happy, euphoric as the defining characteristics, and our experience aligns with that consensus. At 17% THC, this hybrid sits in a potency bracket where versatility is the main advantage. Morning users report functional clarity at lower doses. Evening users report satisfying relaxation at higher doses. The ${indica}/${sativa} balance means the dominant effect direction shifts with consumption amount rather than being locked into a single character. The Caryophyllene/Myrcene terpene combination imparts a flavour that lingers on the palate β€” warm and spiced, drying slightly on the exhale.

Ideal settings: adaptable across occasions β€” adjust dose to match the energy level your situation calls for.

Terpene Breakdown

Primary: Caryophyllene Β· Secondary: Myrcene Β· Tertiary: Humulene. 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 caryophyllene dominance anchors the aroma, myrcene provides mid-range character, and humulene contributes a subtle background note that distinguishes this strain from others sharing the same primary terpene.

Suitability and Recommendations

Alpine Blue suits growers with fundamental skills already established. You should understand pH management, basic nutrient ratios, and light cycle requirements before committing to this cultivar β€” 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 β€” extend the vegetative phase for larger plants or flip early for a quicker turnaround in compact spaces. The UK growing season (April through October) accommodates the 55-65 days bloom period comfortably for outdoor cultivators across the country. Shipped discreetly across the UK with our germination guarantee.

Effects

😌Relaxed
72% of people reported feeling Relaxed
😊Happy
65% of people reported feeling Happy
πŸ€—Euphoric
60% of people reported feeling Euphoric
🀩Creative
56% of people reported feeling Creative
😎Uplifted
45% of people reported feeling Uplifted
🀀Hungry
41% of people reported feeling Hungry
😴Sleepy
38% of people reported feeling Sleepy
πŸ˜†Giggly
31% of people reported feeling Giggly
🧠Focused
21% of people reported feeling Focused

Strain Type

Indica 49%Sativa 51%

Strain Data Sheet

🧬THC17% - 20% (Medium-High)
🌿LineageBlue Mystic Γ— Power Plant
πŸ”¬TypeFeminized Hybrid
🌑ClimateTemperate, adaptable
πŸ“…HarvestLate Sept – Oct, UK outdoor (typical)
πŸ“Height100 – 160 cm (typical)
βš–οΈYieldMedium
🏠Yield Indoorup to 350 g/m2
🌳Yield Outdoorup to 350 g/plant
⏱Flowering Time55-65 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.
1
Alpine Blue Feminized
royalkingseeds.co.uk
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πŸ”’Sealed for authenticity
πŸ’§Waterproof coating
πŸ›‘οΈAluminium interior lining
🏷️Protective sticker
πŸ“±QR code verification
πŸ”’Scratchable serial number

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Alpine Blue Feminized β€” Breeder Information

Royal King Genetics

Bred and stabilised in-house by Royal King Genetics β€” 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
F3
Generations
3+
Breeding Programme
F3 Refinement Programme β€” three-generation selection
Stabilisation Notes β€” What This Means for Your Grow

A newer recent-era cross still being actively stabilised. F3 means three rounds of selection β€” the flavour saturation is locked across the bulk of the pack, with a small variant subset under continued cull.

Breeding Goal

Reach trait homogeneity in Alpine Blue through advanced filial refinement.

Selection Focus

Chosen for terpene profile, vigour, structure and finish-time consistency.

Pollen / Mother Source

Royal King Genetics in-house mother stock β€” pollen taken from a sibling male drawn from the same selected pheno population.

Last Batch QC Verified
13 January 2026Β· 99%+ germination