Kush XL cannabis seeds packaging — Royal King Seeds Ireland
IndicaAuto
THC 17%
😊 Beginner Pick
IndicaAutoflowerIn Stock

Kush XL Auto

Order Kush XL Auto seeds online in Ireland. A quality indica cultivar at 17% THC delivering relaxed, sleepy, happy. Chosen for a short season and a damp finish. Fast shipping and a germination guarantee.

Select Pack Size
€13.23EUR
1
🇮🇪Free Irish Delivery
🌱Germination Promise
🔒Unmarked Packaging
⚗

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 2026-09-11 on 400 seeds at 20-23°C.

Germination rate: 97.0% (n=400)
Last QC test date: 2026-09-11
Indoor yield: 496-614 g/m² (avg across 8 verified grower reports)
Outdoor yield, Ireland: 416-672 g/plant (avg across 3 verified grower reports)

About Kush XL Auto

Does Kush XL finish outdoors in Ireland? It does, planted out at the end of May and cut by early October. A compact 68/32 plant is easier to shelter and easier to hide, though the density that makes it worth growing is also what holds water after rain. Bloom takes 8-10 weeks seed to harvest, so the harvest date is set by the calendar far more than by your technique.

What should I expect to take off it? 300-400 g/m2 indoors and 700 g/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 17% 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 Kush XL

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 indica; the deciding factor is your week, not the plant.

How does it handle the weather here? The dense canopy shades itself, which is useful on the handful of genuinely warm days and a liability in a wet week. Mulch the root zone, water early, and keep air moving underneath.

When does bloom feed start? Within a week of the first pistils. The 68/32 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 8-10 weeks seed to harvest of bloom completely; outdoors the plant gets light no lamp matches and can reach 700 g/plant, and pays for it in rain. Flowering: 8-10 weeks seed to harvest. Indoor yield: 300-400 g/m2. Outdoor yield: 700 g/plant. Plant height: 60 cm. Rated easy difficulty.

What Kush XL is like in practice

The catalogue lists relaxed, sleepy, happy, and that matches what growers here report back. At 17% 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

Kush XL 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. Autoflowering genetics remove the light schedule from the equation, which matters in a shed or a spare room where full darkness is not realistic. A bloom of 8-10 weeks seed to harvest fits inside the season here for outdoor growers, with a tunnel making it comfortable rather than tight.

Effects

😌Relaxed
72% of people reported feeling Relaxed
😴Sleepy
72% of people reported feeling Sleepy
😊Happy
58% of people reported feeling Happy
🤤Hungry
54% of people reported feeling Hungry
🤗Euphoric
47% of people reported feeling Euphoric
🧘Calm
40% of people reported feeling Calm
🌿Stress Relief
27% of people reported feeling Stress Relief
💆Body High
24% of people reported feeling Body High
😶‍🌫️Sedated
21% of people reported feeling Sedated

Best For

✦ Evening
✦ Relaxation
✦ Sleep Support

Strain Type

Indica 68%Sativa 32%

Strain Data Sheet

🧬THC17% - 21% (Medium-High)
🌿LineageAutoflowering Indica-Dominant Hybrid (Undisclosed Lineage)
🔬TypeAutoflower Indica
🌡ClimateAll climates (adaptable)
📅Harvest≈ 10 – 11 weeks from seed (typical)
📏Height60 cm
⚖️YieldMedium – High
🏠Yield Indoor300-400 g/m2
🌳Yield Outdoor700 g/plant
⏱Flowering Time8-10 weeks seed to harvest

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Premium Genetics
Protective vial
Resealable +
Royal King Seeds supplies seeds as adult novelty collectibles and for genetic preservation. Purchasers are responsible for complying with the law where they live.
1
Kush XL Auto
royalkingseeds.ie
IG
FB
X
🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

Related Strains

Ace of Spades cannabis seeds packaging — Royal King Seeds Ireland
IndicaAuto
THC 20%
😊 Beginner Pick

Ace of Spades Auto

RelaxedSleepyHappy
▼
€10.04EUR
Afghan Kush cannabis seeds packaging — Royal King Seeds Ireland
IndicaAuto
THC 20%
😊 Beginner Pick

Afghan Kush Auto

RelaxedSleepyHappy
▼
€12.78EUR
Afghani Bullrider cannabis seeds packaging — Royal King Seeds Ireland
IndicaAuto
THC 16%
😊 Beginner Pick

Afghani Bullrider Auto

RelaxedSleepyHappy
▼
€9.12EUR
Afgooey cannabis seeds packaging — Royal King Seeds Ireland
IndicaAuto
THC 20%
😊 Beginner Pick

Afgooey Auto

RelaxedSleepyHappy
▼
€11.86EUR

Kush XL Auto — Breeder Information

Royal King Genetics

Bred 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.

Stabilisation Level
F5
Generations
5+
Breeding Programme
Royal King Genetics Auto Line — recessive trait stabilisation
Stabilisation Notes — What This Means for Your Grow

Kush XL is our F5 autoflower line. Five rounds of selection have fixed both the autoflower trigger and the purple expression the cultivar is known for. The recessive ruderalis trait demands this depth of work to express uniformly.

Breeding Goal

Lock the autoflower trait in Kush XL through five generations of selection.

Selection Focus

Chosen for purple/dark expression where it shows, dense bud structure and a true indica relaxation profile.

Pollen / Mother Source

Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.

Last Batch QC Verified
6 September 2026· 99%+ germination