
XJ-13 Feminised
Grow XJ-13 Feminised in Ireland. Hybrid genetics testing at 23% THC. Known for energetic, happy, relaxed 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 2026-09-06 on 325 seeds at 21-24°C.
About XJ-13 Feminised
Does XJ-13 finish outdoors in Ireland? It does, planted out at the end of May and cut by early October. The 50/50 balance handles an Irish season without special treatment, which is most of the reason to choose it. Bloom takes 9-10 weeks, so the harvest date is set by the calendar far more than by your technique.
What should I expect to take off it? Up to 650 gr./m2 indoors and Up to 800 gr./plant outdoors are the published figures, and both assume a full light or a full season plus a root run to match. A tunnel gets you most of the way to the outdoor number; a windowsill will not. At 23% THC the effort is well spent either way.
Is it a sensible first grow? Reasonably. Anyone who has finished one grow will manage this one; it asks for consistency rather than expertise.
Other questions that come up about XJ-13
Soil or coco? Coco with fertigation at EC 1.4-1.8 through bloom if you are there daily and want speed. Peat-free soil with slow amendments — fish, blood and bone, seaweed meal, rock phosphate — if you are not, and want flavour. Both suit this hybrid; the deciding factor is your week, not the plant.
How does it handle the weather here? Hybrid vigour covers most of what an Irish summer does. Keep the root zone under 28°C and do not transplant into a warm spell.
When does bloom feed start? Within a week of the first pistils. The 50/50 balance shifts demand quickly at the transition — phosphorus and potassium up, nitrogen down. Soil growers top-dress; coco and hydro switch formula immediately.
Tunnel, outdoors or indoors? A tunnel is the best value of the three here. Indoors you own the 9-10 weeks of bloom completely; outdoors the plant gets light no lamp matches and can reach Up to 800 gr./plant, and pays for it in rain. Flowering: 9-10 weeks. Indoor yield: Up to 650 gr./m2. Outdoor yield: Up to 800 gr./plant. Plant height: over 185 cm tall if left untrained. Rated intermediate difficulty.
Flavour, aroma and effect
XJ-13 arrives in order. The first draw at 23% THC gives citrus with a bitter edge that lifts off the palate. The energetic, happy, relaxed character follows in minutes, as head and body together. Thinking stays clear while the muscles let go by degrees, which is what makes the dose, rather than the genetics, the thing that decides the evening. Caryophyllene underneath contributes warmth that keeps it anchored.
Terpene breakdown
Primary: Limonene · 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. Limonene 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 XJ-13? 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 intermediate, which means a moderate learning curve that rewards attention without needing specialist kit.
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Feminised Premium
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XJ-13 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.
XJ-13 runs through our F3 programme. Most of the pack expresses the target pack-to-pack uniformity cleanly; the F3-to-F4 cycle is where we close out the last remaining off-types.
Cull off-type phenos in XJ-13 at F3 to lock the cross profile.
Chosen for terpene profile, vigour, structure and finish-time consistency.
Royal King Genetics in-house breeder room — pollen taken from a generation-tracked sibling-male line.