
King Louis XIII Feminised
Order King Louis XIII Feminised seeds online in Ireland. A quality indica cultivar at 23% THC delivering happy, relaxed, sleepy. Chosen for a short season and a damp finish. Fast shipping and a germination guarantee.
Royal King Genetics โ 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 2026-09-09 on 125 seeds at 20-23ยฐC.
About King Louis XIII Feminised
Growing King Louis XIII in Ireland is a question of rain and wind rather than of heat or latitude. The whole island runs temperate oceanic, so nowhere is meaningfully warmer than anywhere else โ what changes as you move west is how many wet days land on the plant while it is in flower. Outdoors that makes bud structure and the 8-9 weeks of bloom the two things worth reading before anything else, because a dense cola and a wet October are a poor combination. Under a tunnel or under lights the argument disappears: King Louis XIII is then judged on its genetics and on nothing else.
Growing it on this island
The pressures here are consistent and they are nearly all about water. Botrytis in dense flower from September onwards is the first, and it is answered with open structure, moving air and a roof โ not with anything sprayed on afterwards. Indoors, spider mite and thrips arrive the way they always do, and humidity above 60% in late bloom is what turns a manageable problem into a lost room. Outdoors in a wet spring the slugs do more damage to seedlings than every insect on the plot, and they do it in a single night.
A polytunnel changes the arithmetic on King Louis XIII more than any other single purchase. It adds a fortnight at both ends of the season, keeps the rain off the flower during the weeks that matter, and turns a marginal outdoor crop into a reliable one.
What King Louis XIII is like in practice
The catalogue lists happy, relaxed, sleepy, and that matches what growers here report back. At 23% THC this indica sits where the dose is the whole question. One bowl through a vaporiser at 185ยฐC 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 Linalool and Myrcene together leave a finish that keeps shifting across a session.
Suited to evenings in, recovery after work, and the hour before sleep.
Terpene breakdown
Primary: Linalool ยท Secondary: Myrcene ยท Tertiary: Caryophyllene. 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. Linalool anchors it, myrcene holds the middle, and caryophyllene sits behind both โ the last of those being what separates this from other strains leading on the same terpene.
Who it suits
King Louis XIII 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 โ veg longer for a bigger plant, or flip early when the ceiling is low. A bloom of 8-9 weeks fits inside the season here for outdoor growers, with a tunnel making it comfortable rather than tight.
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King Louis XIII Feminised โ Breeder Information
Royal King GeneticsBred and stabilised in-house by Royal King Genetics โ 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.
F4 stabilisation on King Louis XIII. Each generation we cull aggressively against off-types โ the F4 population reflects only the phenos that match the cultivar reference profile.
Stabilise the King Louis XIII cross over four selection rounds.
Chosen for resin output, a low-slung stature and a clean indica terpene fingerprint.
Royal King Genetics select-mother programme โ pollen drawn from an internally maintained reversed-female line.