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Ireland's Complete Cannabis Seed Catalogue — Over 1,600 Genetics Shipped Discreetly

Royal King Seeds stocks 1,677 cannabis seed varieties for Irish growers — feminised, autoflowering, indica, sativa, hybrid, and CBD genetics with tracked, discreet delivery to all 26 counties. Every strain page carries the grow figures we could source, and our growing support team is available seven days a week. Whether you are setting up your first grow tent in a Dublin flat or planning a multi-strain polytunnel in Galway, the right genetics are the foundation of every successful harvest. Try our strain finder quiz for tailored recommendations in under a minute, or plug your setup details into the yield calculator to preview your potential harvest weight.

Also worth a look: feminised seeds if you want every plant to flower, autoflowers if your season is short, outdoor genetics if you are planting out in spring, and mix packs if you would rather sample several at once.

1677 strains available

Genetics Available1,677
DeliveryThroughout Ireland
Free Shipping ThresholdOver €80

Shop All Cannabis Seeds catalogue at a glance

Our shop all cannabis seeds collection currently holds 1677 strains in active inventory with verified THC content ranging from 1% at the low end to 33% at the high end (median 20%).

Strains
1677
THC range
1-33%
Median THC
20%
Auto / Photo
422/1254
  • Feminised photoperiod: 1254 strains (75% of the catalogue) — single-flip genetics with the largest single-plant yields.
  • Autoflowering: 422 strains (25% of the catalogue) — finishes 8-10 weeks seed-to-harvest.
  • Indica-dominant: 817 — body-led effects, compact structure, Myrcene-Caryophyllene terpene signature typical.
  • Sativa-dominant: 235 — cerebral effects, taller plants, Limonene-Pinene-Terpinolene profiles common.
  • Balanced hybrid: 580 — mixed indica/sativa lineage, ranges from 60/40 to 50/50 splits depending on phenotype.
  • CBD-rich therapeutic: 45 — elevated CBD with proportionally lower THC, suited to medical-focused growers.
  • Alphabetical lineup starts with: $100 OG, 13 Dawgs, 24k Gold — see the full grid below for filters and grow specifications.

Shop All Cannabis Seeds — Browse All Strains

What Sets Royal King Seeds Apart for Irish Buyers?

Two things, and neither is a promise about quality. First, the grow figures on each strain page come from the breeder or a reference source and are attributed, and where no published figure exists the field is left blank rather than filled with a plausible range. Second, everything is priced in euro with VAT included and no card surcharge, so the shelf price is what you pay.

Navigating Cannabis Seed Categories

Our catalogue is organised to match the way Irish growers actually shop. Feminised seeds guarantee 99.9% female plants — no males wasting space in your tent. Autoflowering genetics flower on their own schedule in eight to ten weeks, perfect for short-season regions or growers wanting multiple harvests per year. CBD-rich strains suit therapeutic cultivation with minimal psychoactive effects. High-THC options cater to experienced consumers chasing potency. Curated mix packs let you sample several genetics in one order at a bundled price. Our yield calculator estimates harvest weight for your specific environment.

Matching Seeds to the Irish Climate

Ireland is close to one growing climate the whole way across, and the variable that matters is not heat but whether a plant can finish before the autumn weather arrives. There is no dry season anywhere on the island: rain falls in every month with an autumn maximum, so the wettest, dullest weeks land squarely on the bloom window. Bud rot decides an Irish harvest more often than anything else does, which makes open-structured, mould-resistant genetics worth more than a headline THC figure. The eastern counties have the least rain and the best sunshine and give a moderate photoperiod a fair chance outdoors; the Atlantic seaboard takes roughly double the rainfall along with the wind, and rewards covered growing or a fast autoflower; the midlands have the widest frost window at both ends. Days to finish is the field to read first.

Autoflowering or Feminised — Picking the Right Seed Type

Autoflowers finish from seed in eight to ten weeks, stay compact, and skip the light-cycle management that photoperiod strains require. They suit beginners, balcony grows, and anyone chasing speed. Feminised photoperiod seeds hand you full control over plant size and timing — veg as long as you like, flip to flower when you are ready, and harvest heavier per plant. Experienced growers often run both types in parallel: autoflowers for quick rotations and feminised photoperiods for the main crop. Neither type is objectively better — the right choice depends on your space, schedule, and goals.

Growing Cannabis Seeds Successfully in Irish Conditions

Quality genetics are the starting point, but execution seals the deal. Germinate using the paper towel technique or direct-sow into a seedling plug. Maintain temperatures between 21°C and 30°C, keep flowering-phase humidity around 40–60%, and hold soil pH between 6.0 and 6.5. Indoor growers should invest in a reliable LED or HPS fixture — light quality drives bud density more than any other controllable factor. Low-stress training and topping redistribute growth hormones for a flatter, more productive canopy. Outdoor cultivators across Ireland plant out at the end of May and harvest between mid-September and early October, depending on strain and how exposed the site is. Our full grow-guide library covers every stage from seed activation to curing.

Frequently Asked Questions

What is your position on the law?
Seeds are sold as adult collectibles and for genetic preservation. We do not state what the law permits where you live — that differs by country and changes over time, and it is your responsibility to know what applies to you and to stay within it before ordering. Nothing here is legal advice.
How do I work out which seeds suit my situation?
Three factors narrow the field quickly: growing environment (indoor tent, outdoor plot, balcony, greenhouse), your experience level, and your local climate zone. First-time growers generally get the best results from autoflowering or feminised indica seeds. Our strain finder quiz generates personalised recommendations in under sixty seconds.
What germination rate should I expect?
Every lot goes through our own seed-lot QC before it is packed, and the batch figure for a strain — the rate and the sample size it was measured on — sits on that strain’s page. Treat it as the ceiling rather than a promise: what matters far more in practice is method, meaning the damp paper-towel approach at around 22°C, seeds kept dark and not allowed to dry out, and patience for up to a week before assuming failure. The 95% germination guarantee is what protects you if a pack falls short.
How quickly will my order arrive?
Orders are dispatched within one to two business days. Tracked delivery to most Irish addresses takes two to four business days. Every parcel ships in plain, unbranded packaging. Free shipping applies to orders over €80.
What separates autoflowering seeds from feminised photoperiod seeds?
Autoflowers transition to flowering based on age — typically eight to ten weeks total — and stay compact without needing a light-cycle change. Feminised photoperiod seeds require a shift to 12 hours of darkness to trigger bloom, grow larger, and yield more per individual plant. Both types produce exclusively female plants.
Can I get seeds delivered to regional and remote areas?
Yes. We ship to every Eircode in the Republic — cities, towns and remote rural routes. The offshore islands take a few days longer and are the one declared exception to our stated transit window. Plain, unmarked packaging regardless of destination, and free shipping from €80.

Explore Related Cannabis Seed Categories

Classic Cannabis SeedsEnergizing Cannabis SeedsEuphoric SeedsExotic Cannabis SeedsHigh THC SeedsPurple Genetics SeedsAutoflower SeedsFeminised Seeds

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