
Grape OX Feminised
Grow Grape OX Feminised in Ireland. Indica genetics testing at 22% THC. Known for euphoric, calm effects. Ships discreetly nationwide with sourced grow figures.
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 2026-09-14 on 100 seeds at 21-24°C.
About Grape OX Feminised
Everything about Grape OX at harvest follows from one decision, which is when you stop. The figures are 450 gr/m² indoors and 455 g per plant outdoors, with resin filling towards 22% THC. Weight arrives late on a plant this indica-leaning — the 71/29 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 63 to 70 days indoors of bloom account for most of the difference between a good result and an average one on a plant rated 450 gr/m² indoors and 455 g per 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: 63 to 70 days indoors. Indoor yield: 450 gr/m². Outdoor yield: 455 g per plant. Plant height: 90-120 cm. Medium. Rated medium difficulty.
Flavour, aroma and effect
Grape OX arrives in order. The first draw at 22% THC gives earth and musk, coating rather than sharp. The euphoric, calm character follows in minutes, as weight behind the eyes that works down through the shoulders. By a quarter of an hour it reads as physical stillness rather than sedation — a strong disinclination to stand up. Two to three hours at a sensible dose. Caryophyllene underneath contributes warmth that keeps it anchored.
Terpene breakdown
Primary: Myrcene · Secondary: Caryophyllene · 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, caryophyllene 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
Who does well with Grape OX? 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 medium, which means a moderate learning curve that rewards attention without needing specialist kit.
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Grape OX 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.
Grape OX 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 resin density run uniform across the population.
Stabilise the Grape OX cross into a seed-uniform line.
Chosen for indica vigour, compact bud formation and a reliable finish window.
Royal King Genetics in-house breeder room — pollen taken from a generation-tracked sibling-male line.