
Blueberry Auto
Blueberry Auto — premium indica cannabis seeds suited to Irish growing conditions. 16% THC with focused, calm effects. Discreet delivery across Ireland, with sourced grow figures on every strain page.
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 2026-09-17 on 225 seeds at 20-23°C.
About Blueberry Auto
Everything about Blueberry at harvest follows from one decision, which is when you stop. The figures are 350-500 g/m2 indoors and 25-75 g/plant outdoors, with resin filling towards 16% THC. Weight arrives late on a plant this indica-leaning — the 80/20 split stacks calyxes hard through the middle weeks and then thickens them. Growers who cut on the calendar rather than the glass lose that last stage, and it is the most valuable one.
Where the weight is won
Three parts of the 8-10 weeks seed to harvest of bloom account for most of the difference between a good result and an average one on a plant rated 350-500 g/m2 indoors and 25-75 g/plant outdoors.
The stretch, days 1-10 after the flip. Canopy height set here decides how evenly light lands for the rest of the run. Twenty to thirty per cent is typical; taking the lowest fans around day seven pushes energy up to the sites that will finish.
Weeks three to five. Myrcene production climbs through this stretch and responds to a 6-8°C gap between lights-on and lights-off. Outdoors an Irish September provides that without help; indoors it has to be built, at roughly 25°C by day and 18-20°C at night. Bloom feed goes potassium-forward around EC 1.6-1.8.
The final fortnight. Feeding stops, plain pH-corrected water goes on, and the loupe comes out daily. Fifteen to twenty per cent amber suits the weight of effect this one is grown for. Outdoors, that falls between late September and mid-October, and the forecast gets a say.
Flowering: 8-10 weeks seed to harvest. Indoor yield: 350-500 g/m2. Outdoor yield: 25-75 g/plant. Plant height: 50-75 cm. Rated easy difficulty.
What Blueberry is like in practice
The catalogue lists focused, calm, and that matches what growers here report back. At 16% THC this indica sits where the dose is the whole question. One bowl through a vaporiser at 185°C leaves the head working and the body easy, which is what most people are after on a weeknight. More than that moves it firmly towards sedation. The Myrcene and Humulene together leave earth and faint sweetness, with fruit at the end.
Suited to evenings in, recovery after work, and the hour before sleep.
Terpene breakdown
Primary: Myrcene · Secondary: Humulene · Tertiary: Linalool. This is a combination that turns up repeatedly in cultivars people rate, and it is usually what gets commented on when a jar is opened for the first time after a proper cure. Myrcene anchors it, humulene holds the middle, and linalool sits behind both — the last of those being what separates this from other strains leading on the same terpene.
Who it suits
Blueberry suits growers with the fundamentals in place. Understand pH, rough nutrient ratios and a light cycle before committing to it; it asks for competence rather than expertise. Autoflowering genetics remove the light schedule from the equation, which matters in a shed or a spare room where full darkness is not realistic. A bloom of 8-10 weeks seed to harvest fits inside the season here for outdoor growers, with a tunnel making it comfortable rather than tight.
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Blueberry Auto — Breeder Information
Royal King GeneticsBred 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.
Five generations of selection on Blueberry to lock the autoflower trait. Auto trigger reliability and purple expression expression both run uniform across the population — no rogue photoperiod plants in the pack.
Reach auto trigger and finish-window uniformity for the Blueberry pack.
Chosen for trichome coverage, stout structure and consistent flowering time across the pack.
Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.