Alpha Blue cannabis seeds packaging — Royal King Seeds Ireland
Sativa
THC 20%
🎨 Creative
SativaFeminisedIn Stock

Alpha Blue Feminised

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

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Royal King Genetics — first-party test batch

Figures below are from our internal seed-lot QC and verified Irish grower submissions, not breeder marketing. Determined from a single batch tested 2026-09-08 on 200 seeds at 21-24°C.

Germination rate: 97.5% (n=200)
Last QC test date: 2026-09-08
Indoor yield: 417-596 g/m² (avg across 17 verified grower reports)
Outdoor yield, Ireland: 509-750 g/plant (avg across 8 verified grower reports)

About Alpha Blue Feminised

Days 1-14, germination and early veg. Alpha Blue generally cracks within about two days on damp kitchen paper and is above the medium by day three. The first fortnight came in quick and reaching, narrow leaves angled up from the start. Five nodes by day 14 with real space between them, which tells you what is coming after the flip. Keep the humidity near 70% and damping off stops being a concern.

Weeks 3-6, veg. It wanted to climb. Low-stress training from week three was not enough on its own, so the main stem went over at a right angle in week four and the secondaries levelled up behind it.

Bloom, weeks 1-9. The 24/76 character came through clearly. Pinene was noticeable by week three and kept building; resin was obvious without a loupe from about week five. Indoor yield: up to 350 g/m2. Height: Short. Tested at 20%. Rated easy.

The rest of the run

Weeks 4-6, mid-bloom. Loose clusters from week three closed up into defined colas. Buds kept extending rather than thickening, stacking calyxes along the stems. The lower sites did better than expected, because an open plant lets light reach places a bushy one shades out.

Ripening, weeks 7-9. Plain water for the last ten days. Pinene was strong enough by then that carbon filtration was not optional in a terraced house. Heads went clear to milky over the final fortnight, amber showing on sugar leaves first, and around 15% amber on the calyxes is a defensible place to stop.

Drying and curing. Hung whole in the dark at 17°C and 58% humidity for twelve days, both held by a dehumidifier because an October room here will hold neither. Stems snapped instead of bending, which is the only test worth trusting. Four weeks in glass after that. The up to 350 g/m2 figure held up. Limonene was far more present after the cure than at harvest — the cure makes flavour, it does not merely preserve it.

Flowering: 55-65 days. Indoor yield: up to 350 g/m2. Outdoor yield: up to 450 g/plant. Plant height: Short. Rated easy difficulty. Feminised seeds.

Flavour, aroma and effect

Alpha Blue arrives in order. The first draw at 20% THC gives resin and green wood, clean rather than sweet. The happy, energetic, creative character follows in minutes, as attention sharpening. Colour and sound both read busier, and conversation goes further afield than it otherwise would. It holds two to three hours without a spike. Limonene underneath contributes a lift that stops it going heavy.

Terpene breakdown

Primary: Pinene · Secondary: Limonene · Tertiary: Caryophyllene. The three shift relative to each other across the cure. Straight off the dry the pinene dominates; three or four weeks sealed in glass at 16-18°C and the caryophyllene underneath comes up to meet it. Vaporising between 180°C and 195°C catches the widest span, because heat takes the lighter caryophyllene molecules first.

Who it suits

Who does well with Alpha Blue? Indoor growers who want to choose their own timeline. Tunnel growers who want to decide when flowering starts rather than letting August decide it. Anyone with the space to veg it properly first. Rated easy, which means a moderate learning curve that rewards attention without needing specialist kit.

Effects

😊Happy
72% of people reported feeling Happy
🤑Energetic
64% of people reported feeling Energetic
🤩Creative
63% of people reported feeling Creative
😎Uplifted
51% of people reported feeling Uplifted
🤗Euphoric
47% of people reported feeling Euphoric
🧠Focused
42% of people reported feeling Focused
🗣️Talkative
30% of people reported feeling Talkative
💪Motivated
31% of people reported feeling Motivated
😆Giggly
24% of people reported feeling Giggly

Best For

✦ Daytime
✦ Creative Projects
✦ Social Activities

Strain Type

Indica 24%Sativa 76%

Strain Data Sheet

🧬THC20% - 25% (High)
🌿LineageBlue Dream × NYC Diesel
🔬TypeFeminised Sativa
🌡ClimateWarm / Mediterranean, long season
📅HarvestSept – Nov, S. hemisphere (typical)
📏HeightShort
⚖️YieldMedium
🏠Yield Indoorup to 350 g/m2
🌳Yield Outdoorup to 450 g/plant
⏱Flowering Time55-65 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
Alpha Blue Feminised
royalkingseeds.ie
IG
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Alpha Blue 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
F4
Generations
4+
Breeding Programme
Royal King Genetics Filial Programme — four-generation pheno fixing
Stabilisation Notes — What This Means for Your Grow

A modern hybrid cross stabilised over four generations of selection. Alpha Blue grows true-to-type with the cerebral terpene profile that defines the cultivar.

Breeding Goal

Cull off-type phenos in Alpha Blue through filial selection.

Selection Focus

Chosen for terpene saturation, sativa vigour and a workable finish time despite long-flowering genetics.

Pollen / Mother Source

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

Last Batch QC Verified
15 September 2026· 99%+ germination