
Blue Mystic Feminised
Blue Mystic Feminised — premium indica cannabis seeds suited to Irish growing conditions. 19% THC with relaxed, sleepy, happy 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 2026-09-07 on 125 seeds at 20-23°C.
About Blue Mystic Feminised
Days 1-14, germination and early veg. Blue Mystic generally cracks within about two days on damp kitchen paper and is above the medium by day three. The first fortnight came in low and thickset, wide seed leaves followed by the broad dark fans this side of the genetics gives. Four nodes by day 14, the gaps between them already short. Keep the humidity near 70% and damping off stops being a concern.
Weeks 3-6, veg. Branching filled out fast after a single top at node four, holding a 60cm square and staying under 40cm — which is what makes this shape practical in the small tents most people actually have room for.
Bloom, weeks 1-9. The 68/32 character came through clearly. Myrcene was noticeable by week three and kept building; resin was obvious without a loupe from about week five. Indoor yield: 375-425 g/m2. Height: 60-100 cm. Tested at 19%. Rated medium.
The rest of the run
Weeks 4-6, mid-bloom. Loose clusters from week three closed up into defined colas. Density climbed daily until a bud squeezed like a firm ball by week five. Fan leaves came off at the start of week four to keep air under the canopy, which mattered — an Irish autumn room sits damp, and flower this tight does not tolerate still air.
Ripening, weeks 7-9. Plain water for the last ten days. Myrcene 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 375-425 g/m2 figure held up. Humulene was far more present after the cure than at harvest — the cure makes flavour, it does not merely preserve it.
Flowering: 55-60 days. Indoor yield: 375-425 g/m2. Outdoor yield: 400-450 g/plant. Plant height: 60-100 cm. Rated medium difficulty. Feminised seeds.
What Blue Mystic is like in practice
The catalogue lists relaxed, sleepy, happy, and that matches what growers here report back. At 19% 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. Temperature decides how much of this profile survives. Low vaporisation at 180-188°C keeps humulene and linalool audible over the myrcene; run it hotter, or burn it, and all three collapse into one note that is pleasant enough and tells you nothing.
Who it suits
Blue Mystic 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. Photoperiod genetics leave plant size and harvest date under your control — veg longer for a bigger plant, or flip early when the ceiling is low. A bloom of 55-60 days fits inside the season here for outdoor growers, with a tunnel making it comfortable rather than tight.
Effects
Best For
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Strain Data Sheet
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Feminised Premium
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Blue Mystic Feminised — 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.
Blue Mystic carries clone-derived parents from the 2010s production. We backcrossed twice to the dominant parent (BX2) to weld cut-specific traits into seed-stable form. Vigour and compact internode spacing run uniform across the population.
Pin the compact internode spacing that came out of the original Blue Mystic cross.
Chosen for resin output, a low-slung stature and a clean indica terpene fingerprint.
Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.